According to the public data of the Ministry of Commerce, in April this year, the national building materials and home furnishing prosperity index (BHI) was 117.65, and the sales of building materials and home furnishing stores above designated size exceeded 110 billion yuan, and the cumulative sales from January to April exceeded 420 billion yuan.

　　Although the above data decreased slightly compared with the same period of last year, with the introduction of "trade-in" policies in various places since April, and the favorable factors such as the overlapping market entering the traditional peak season, the household sector continued to release consumption vitality, the industry prosperity rebounded, and the "Xiaoyangchun" market in the home building materials market also continued.

　　The market potential of "trade-in" is huge.

　　At present, China’s real estate market is still in the adjustment stage, but since the beginning of this year, favorable policies have been implemented in various places, and industry insiders expect that the industry will accelerate its stabilization. As the downstream industry of the real estate market, the consumer demand of the national building materials and home furnishing market continued to be released from January to April. Although the sales data decreased slightly year-on-year, thanks to the help of the policy side, the overall situation was still improving.

　　In March this year, the State Council issued the Action Plan for Promoting Large-scale Equipment Renewal and Trade-in of Consumer Goods (hereinafter referred to as the Plan) to promote economic transformation and upgrading and improve the quality of life of urban and rural residents.

　　The "Proposal" pointed out that for the trade-in of household appliances, it is necessary to improve the convenience as the core and smooth the consumption chain of household appliances; In order to promote the replacement of home improvement consumer goods, it is required to support residents to carry out local renovation of old houses, kitchens and bathrooms, continue to promote the aging renovation of homes, and actively cultivate new consumption such as smart homes. Promote home improvement model rooms to enter shopping malls, communities and platforms, encourage enterprises to build online model rooms, and provide affordable products and services to meet diversified consumer needs.

　　"The introduction of the trade-in policy is a major positive for the home furnishing industry." Qin Zhanxue, president of China Building Materials Circulation Association, pointed out that the relevant data of the Ministry of Housing and Urban-Rural Development showed that by the end of 2022, the total number of urban and rural housing construction in China had exceeded 600 million, with huge market potential. "As houses enter the aging cycle one after another, the demand for renovation and functional upgrading will gradually increase. It is expected that the industry will usher in a new round of trade-in climax in the future."

　　According to incomplete statistics, in the past year, the total output value of China’s home improvement industry was about 2.77 trillion yuan, of which the demand for local decoration exceeded 35%. "It is conservatively estimated that the replacement scale of the home and home improvement market will exceed one trillion yuan." Hu Yanan, secretary-general of China Building Decoration Association’s Residential Decoration and Parts Industry Branch, said that according to the association’s rough calculation, there are more than 200 million houses in urban housing that are over 20 years old, and the demand for renovation and transformation at the consumer end is strong.

　　Grasp the "renewal" cycle and accelerate the layout of enterprises

　　The promulgation of the "Program" has given industry support and guidance at the policy level and brought new development opportunities at the development level. Many home associations and head home stores have acted quickly, actively responding to the policy call and helping to release the potential of home consumption by issuing trade-in coupons, promoting in communities, and granting subsidies.

　　At the end of April, at the annual meeting of the housing industry in 2023-2024, the Residential Decoration and Parts Industry Branch of China Building Decoration Association, in conjunction with the head home improvement enterprises and parts and materials enterprises all over the country, officially launched the "Home Improvement Trade-in Action". "I hope that through this action, a group of’ home improvement practitioners’ will be cultivated, and typical cases of enterprises will be launched to create a more assured, worry-free and secure consumption environment." According to the relevant person in charge of China National Equipment Association, this action aims to promote the effective implementation of "trade-in" related programs in the home improvement and home furnishing industries, and call on the whole industry to respond to the replacement of home improvement consumer goods, and encourage member units to actively carry out local upgrading and renovation of old houses, kitchens and bathrooms, and aging renovation of homes.

　　On May 6th, in response to the "Consumption Promotion Year" policy of the Ministry of Commerce, and vigorously promoting the trade-in of the household industry, China Building Materials Circulation Association also launched the "Third National Green Smart Home Consumption Festival", which empowered enterprises by implementing the relevant action plan of "trade-in" and issuing exchange vouchers for trade-in.

　　Focus on home stores. According to our understanding, the heads including Red Star Macalline and Easyhome made relevant implementation plans as early as the "trade-in" scheme was put forward.

　　Among them, Beijing Red Star Macalline has invested more than 10 million yuan since March to promote trade-in, benefit consumers, and help people rejuvenate. It is reported that in order to make more consumers enjoy the trade-in benefits easily, Beijing Red Star Macalline not only joined hands with 17 brand enterprises such as Xilinmen, Wrigley Sanitary Ware and Boloni to participate in the trade-in activities of green smart consumer goods, but also distributed subsidies of about 8 million yuan in different forms through online and offline channels.

　　The relevant person in charge of Red Star Macalline said that consumers can make an appointment to drag the old service through the "Red Star Home" applet, and they can enjoy the 600 yuan subsidy at the highest; Go to the offline store for "replacement", and you can also enjoy the government subsidy and superimpose the joint discount. "At present, relevant subsidies have been launched in five major shopping malls in Beijing, and consumers can get subsidies and enjoy the benefits of renewal."

　　The data shows that since the beginning of this year, Red Star Macalline has launched a large-scale "trade-in" campaign for home appliances in many shopping malls across the country, taking the demand for trade-in as the contact point to obtain accurate store traffic for shopping malls, and guiding the related sales between home appliances and other categories through refined operation.

　　On May 9, Easyhome also revealed the progress of "trade-in" on the investor interaction platform. It said that this year, it will comprehensively promote the three major IPS of "trade-in furniture and household appliances", "old houses for new looks" and "it is difficult for families to find them", which will drive the rapid growth of home sales.

　　The relevant person in charge of Real Home pointed out that the company released the "trade-in" strategy as early as 2022 and carried out related business. "According to statistics, a number of IP activities related to’ trade-in’ achieved remarkable results last year, achieving 207,000 customers, guiding sales of 650 million yuan and recycling 68,000 old things." The person in charge said.

　　At the same time, many home furnishing enterprises also seize the favorable market cycle and fully exert their strength in the stock market.

　　At the beginning of May, Qumei Home officially launched this year’s trade-in activities in the "Huanxin Plan Conference". In fact, since the first launch of this activity in 2013, Qumei Home has positioned it as a long-term and far-reaching important action. Zhao Ruihai, chairman of Qumei Home Furnishing Co., has repeatedly said that "trade-in" is not only a commitment to consumers, but also a manifestation of corporate social responsibility.

　　"Among about 300,000 customers accumulated by enterprises, some of them are currently in the consumption cycle that needs to be updated and iterated." Recently, Meike Home also publicly stated that this year, it will increase visits to early users, carry out maintenance and clue acquisition, with a view to providing consumers with diversified replacement programs. Oupai Home has launched the whole house renovation and whole package services, such as package storage, package discount, package design and help to move, to meet the diversified needs of consumers.

　　The industry believes that promoting the trade-in of household products requires both upstream and downstream synergy, and the household industry needs to continuously and deeply tap its own resources to promote the sustainable development of trade-in in a more market-oriented way and more convenient activities.

　　Both ends of supply and demand still face corresponding difficulties.

　　Although the market potential of trade-in is huge, it faces many difficulties in practical operation.

　　From the consumer side, how to deal with the replaced furniture, where to store the old furniture, and how to find a "reliable" decoration company and foreman may all hinder the implementation of the old-for-new policy. On the supply side, trade-in, local renovation and other links have a large amount of work, relatively low customer list value, and most of them are concentrated in old communities, so the construction difficulty is relatively high.

　　"At present, the residual value of many furniture recycling and dismantling wastes is relatively low, and the willingness of large-scale platform enterprises to participate in recycling is insufficient, but consumers do not have the ability to handle large pieces of furniture by themselves, which will become a constraint for replacing new ones to some extent." Zhu Jiagui, CEO and general manager of Red Star Macalline Home Furnishing Group, said that it is not easy for most home furnishing enterprises to provide large-scale trade-in services and handle old furniture well. "It is necessary to pay higher operating costs in terms of management, operation, normative environmental protection and demolition." Zhu Jiagui said.

　　In view of the problem that "trade-in is easy to abandon the old", Qin Zhanxue believes that the focus of trade-in should be on the "new" and the treatment of the "old" should not be ignored. "Old products should not be treated as garbage, but should be reused." He said, for example, furniture products can be dismantled and recycled, while construction waste can be reprocessed into floor tiles for municipal decoration materials.

　　The relevant person in charge of the Consumer Promotion Department of the Ministry of Commerce said that the trade-in work involves thousands of households and the vital interests of consumers. Promoting the trade-in of consumer goods is not only a powerful measure to enhance the momentum of economic growth and consolidate the good momentum of recovery, but also a long-term strategy to promote the high-quality development of the home furnishing industry. In the future, the industry should gradually establish an effective mechanism of "it is easier to get rid of the old and more willing to replace the new", so that consumers can enjoy better services and the trade-in action can be truly and thoroughly carried out in the industry. Text/Zhang Xinyu

　　Source: Beijing Evening News

　　BEIJING, Beijing, June 20 (Xinhua) In recent days, many places in the north have once again ushered in the "sunny mode". With the expansion of the sphere of influence of high temperature weather, from today, there will be high temperature weather lasting for many days in Huanghuai, North China, with the highest temperature reaching 35 ~ 38 C. In the south, rainfall has become the key word of weather, and the areas affected by heavy rain involve 10 provinces.

　　Data Map: At noon on June 5, the temperature in Shijiazhuang reached 38℃, and citizens traveled with various sunshade protective gear. China News Service reporter Yujia Zhai photo

　　Many places in the north enter the "sunny mode" and the meteorological conditions of ozone pollution are high.

　　After the Dragon Boat Festival holiday, the high temperature once again visited many places in the north, and the sphere of influence of high temperature in Huanghuai area of North China continued to expand. According to the weather forecast, after 20 days, some areas in eastern North China and Huanghuai will have high temperature weather for 4 to 6 days, with the highest temperature reaching 35 to 38℃.

　　In Beijing, the Beijing Meteorological Observatory issued a blue warning of high temperature at 16: 40 on the 19th. It is estimated that the daily maximum temperature in most parts of Beijing will reach above 35℃ from 20th to 21st.

　　Not only in Beijing, but also in the southern part of North China and the central and western parts of Huanghuai today and tomorrow, high temperatures will continue to spread. Among provincial-level cities, Tianjin, Shijiazhuang and Zhengzhou will have high temperatures today and tomorrow. From the 21st, Jinan will have high temperatures for five consecutive days.

　　As the "sunshine mode" is on, according to the news of the Central Meteorological Observatory, the meteorological conditions of ozone pollution in central and southern North China, Huanghuai and other places are relatively high from the 20th, with the meteorological conditions of ozone pollution ranging from 3 to 4, and the local level in central and southern North China can reach 5.

　　Take Beijing-Tianjin-Hebei and its surrounding areas as an example. From 20 to 25, the central and southern parts of the region have strong solar radiation and high temperature, which is conducive to ozone generation. The meteorological conditions of ozone pollution are maintained at level 3 to 4, and the local level can reach level 5.

　　According to meteorologists, ozone pollution will decompose rapidly indoors because it needs high temperature and ultraviolet radiation. Experts remind that for photochemical pollution dominated by ozone, it is of little use for people to wear masks. The most important way to prevent photochemical pollution is to avoid going out as much as possible and close doors and windows at the same time.

　　Heavy rain in the south involves 10 provinces, Zhejiang and Hunan.JiangxiThere is a heavy rain in the local area.

　　High temperature weather spread in the north, while in the south, especially in the middle and lower reaches of the Yangtze River, these areas that entered the "rainy season" ushered in continuous heavy rainfall. In response to the rainstorm, the Central Meteorological Observatory has issued blue and yellow rainstorm warnings for several consecutive days.

　　According to the weather bulletin of the Central Meteorological Observatory, during the daytime on the 19th, heavy rains occurred in parts of central Anhui, northern Shanghai, northeastern Guizhou and southeast coastal areas of Guangdong, and heavy rains (101 mm) occurred in Tongren, Guizhou. At 18: 00 on the 19th, the Central Meteorological Observatory issued a blue rainstorm warning again.

　　It is estimated that there will be heavy rains in southern Anhui, Shanghai, Zhejiang, central and northeastern Jiangxi, central Hunan and central Guizhou from 20: 00 on the 19th to 20: 00 on the 20th, among which there will be heavy rains (100-150 mm) in western Zhejiang, northeastern Jiangxi and central Hunan. Some of the above areas are accompanied by short-term heavy precipitation (the maximum hourly precipitation is 20 ~ 50 mm, and the local area is more than 60 mm), and there are thunderstorms and strong winds in the local area.

　　In addition, there are heavy rains and local heavy rains in the northwestern and eastern coastal areas of Fujian, the southeastern coastal areas of Guangdong and Taiwan Province Island.

　　The Central Meteorological Observatory reminded that during the process of heavy rainfall in the south of the Yangtze River and Huaihe River, it is necessary to pay attention to disasters such as urban waterlogging and landslides that may be caused by local heavy rainfall, as well as the adverse effects of strong convective weather such as thunderstorms and strong winds.

　　From the evening of June 18th to the morning of 19th, heavy rain fell in dangyang city, Hubei Province, and some residents were trapped. Fire officers and soldiers in dangyang city City were dispatched to evacuate the trapped people. Liu bangpei

　　The rainfall in the middle and lower reaches of the Yangtze River is concentrated, and the Yangtze River Defense General deploys flood control again

　　Since the Dragon Boat Festival holiday, the heavy rainfall in the middle and lower reaches of the Yangtze River has continued to attract attention. The National Defense General, the Ministry of Water Resources and other departments have repeatedly discussed and judged the rain and flood situation and deployed flood control emergency work.

　　According to the forecast of the Central Meteorological Observatory, the main rain belt of heavy rainfall in the south will be located in the south of the Yangtze River on 20-22, and then it will be carried to the middle and lower reaches of the Yangtze River in the north, and the middle and lower reaches of the Yangtze River will enter the rainfall concentration period.

　　According to the website of the Ministry of Water Resources, on the 18th, the Yangtze River Defense General once again held a meeting on the recent flood control situation in the Yangtze River basin, and deployed the dispatching work of the Three Gorges and Danjiangkou reservoirs.

　　The Yangtze River Defense General issued a dispatch order to dispatch Danjiangkou Reservoir to open two surface holes for flood discharge at 18: 00 on the 18th. At the same time, the General Office of the Yangtze River Defense issued a notice to the Hubei Provincial Defense Index, demanding that the flood control work in the middle and lower reaches of the Han River be effectively carried out. According to the deployment of the National Defense President, the Yangtze River Defense General sent a working group to Jiangxi to help guide the flood control work.

　　Ma Jianhua, executive deputy commander of the Yangtze River Defense General and director of the Yangtze River Water Resources Commission, said that the Yangtze River Basin has entered a period of continuous heavy rainfall concentration, and all relevant departments and units should further attach great importance to it and overcome the luck and paralysis; It is necessary to further strengthen the implementation of responsibilities and do a good job in flood control duty and emergency duty. (End)

Recently, Joy of Life, a costume drama, has been controversial because it costs 50 yuan to order it in advance, and some people even sued the video platform for it.

In addition, many users accused the video platform of "drinking poison to quench thirst", and some users said that they would switch to pirated platforms.

As of December 17th, Joy of Life scored 7.9 points in Douban, ranking first in the hot search list of mainland TV series of Tencent Video. According to the data of online film and television media data platform, as of December 17th, the popularity of the whole network in Joy of Life reached 51.26, far exceeding the costume dramas such as "He Lai Hua Ting" and "Sword Dynasty" broadcast in the same period.

At present, on Tencent and Iqiyi platforms, you have to pay 50 yuan to "unlock" 6 more episodes of Joy of Life than members.

On December 17th, Wang Juan, vice president of Tencent Video, talked about the recently controversial "VVIP" model in Joy of Life, saying: "The reason why we are controversial this time, I think it may be that we are not considerate enough to members’ consumption psychology. This piece is indeed our bug or something we have not done well enough."

Joy of LifeThe popularity is over the same period of costume drama, and members still need to pay for 50 yuan’s "unlocking" drama series.

On the evening of December 11th, Joy of Life needed to spend 50 yuan to board the hot search in Weibo due to the advance on demand.

Joy of Life is a costume drama directed by Sun Hao and starring Ruoyun Zhang and Li Qin, which premiered on November 26th, 2019 on Tencent Video and iQiyi. Production companies include Tencent Pictures, Xinli TV Culture Investment Co., Ltd., Deep Blue Film and Television, Reading Group, Huayu Times, Hainan Radio and Television, etc.

At present, on Tencent and Iqiyi platforms, it is necessary to pay 50 yuan to "unlock" six more episodes of Joy of Life than members, which has been hotly debated by netizens. As of December 17th, the drama has been broadcast to 29 episodes on both video platforms. However, at present, non-members can only watch the 17th episode, while members can only watch the 23rd episode. Only by paying 50 yuan to order in advance can they watch the 29th episode.

On the evening of December 14th, the People’s Daily client published an article entitled "Video website routines emerge in an endless stream, which is too ugly to eat", saying: "VVIP is set up outside VIP, and extra money is needed to enjoy advance on-demand video. Video websites are creating anxiety and inducing user consumption. Is there such an agreement in the previous agreement to purchase VIP? If it is not marked, this extra charge is actually a violation of consumer rights. "

On December 17th, Wang Juan, vice president of Tencent Video, said when talking about the recently controversial "VVIP" model in Joy of Life: "The reason why we are controversial this time, I think it may be that we are not considerate enough to members’ consumption psychology. This piece is indeed our bug or something we have not done well enough."

Facing the way of advanced VOD, Wang Juan also said: "The way of advanced VOD that we hope to explore has been challenged and criticized. But in the face of these things, a sense of crisis and creativity coexist. It is very important for the mining of user consumption, but we hope to think in a more scientific, more orderly and more respectful perspective. "

In addition, on December 17th, after the 4th Annual Summit of New Entertainment and New Consumption in China in 2019, Ying Dai, vice president of iQiyi and general manager of the self-made drama development center, said in response to the dispute over advanced video-on-demand in Joy of Life: "The content of video platforms is becoming more diverse, and the needs of users are becoming more diverse. Our original intention is to meet users’ more diverse content needs, but it may not be done well. In the future, we hope to take more account of users’ psychology and do a good job in the design and notification of scheduling. "

In fact, this is not the first time that the video platform has launched the "advance on demand" service.

At the end of the drama of the popular The Untamed, Tencent Video has launched a marketing strategy of an episode of 6 yuan and a total of 30 yuan’s pre-on-demand finale, testing the water for pre-on-demand.

Lawyer: After the appearance of VVIP, the propaganda promise of video websites constitutes fraud against VIP.

Zhao Zhanling, deputy director of Beijing Zhilin Law Firm, told the The Paper reporter: "The main problem in providing advanced on-demand service outside VIP is that purchasing VIP service means that you can watch 6 episodes first. According to consumers’ common understanding, this kind of preemption means that VIP members can watch 6 episodes first as long as there is a new episode update. However, due to the existence of advanced on-demand service, VIP members’ preemption of watching 6 episodes has only become relative to non-members and not relative to VVIP. Therefore, the propaganda promise of the video website about VIP members’ preemptive viewing of services is suspected of violating the Consumer Protection Law and constitutes fraud to consumers. "

It is worth noting that on December 16th, Weibo law blogger @ Wu Shengwei wsw, who has 670,000 fans, has taken Aiqiyi to court for pre-ordering. He said: "Joy of Life, who has been watching the hit of Iqiyi recently, is particularly good. After catching up with the latest episode, I found that I have to watch not only the patch advertisement, but also pay to watch it in advance. One episode is as high as 3 yuan. Only then did I realize that today’s members have become ordinary users. Nowadays, VIP members of iQiyi can’t automatically skip advertisements and watch hit dramas in advance. The original membership rights are gone, and many membership privileges are castrated in disguise. "

He also said: "I have always been a loyal user of iQiyi. I went through iQiyi’s VIP Member Service Agreement and found many problems and full format terms, so I am going to try it by legal means. I feel that if no one comes forward, there will be VVVIP, vvvvip in the future. The prosecution materials will be sent to the Haidian District People’s Court in Beijing by mail in the near future. "

Under the "film and television winter", the capital side is cautious, and the income pressure of video platforms is great.

On December 17th, Wang Juan, vice president of Tencent Video, admitted that the capital market gave less support to video websites this year, and the advertising growth rate was also slowing down.

"It’s true that the business support given by business friends to video websites is much less this year. Because last year, our variety show, our head network drama, can be said that every investment can basically achieve the goals we set for it, but this year is particularly difficult, because the budget you may have in your pocket has been reduced, and what is even more difficult is that everyone’s requirements for the delivery effect have gone further, so from the data point of view, our overall advertising growth rate has slowed down. "

Similarly, the third quarter report of iQiyi shows that online advertising revenue reached 2.1 billion yuan this quarter, down 14% year-on-year.

At the conference call after the financial report was released, Gong Yu, founder, director and CEO of iQiyi, expressed his expectation of advertising revenue in 2020. "Brand advertising accounts for the vast majority of iQiyi. There is no better sign of brand advertising next year as a whole, but effect advertising will be more optimistic next year because of iQiyi’s own efforts in technology and products. "

Gong Yu said: "The bottleneck of brand advertising revenue is not inventory, but the advertiser’s budget. So the utilization rate is not high. "

emergency food（emergence food，EF）It refers to a kind of food used to maintain human survival in emergencies such as disasters, wars and crashes. Common emergency foods mainly include earthquake relief emergency foods, military emergency foods, civil emergency foods and M9 outdoor emergency foods. Due to the late start of research and development,There is still a certain gap between China’s emergency food and developed countries such as the United States and Japan in processing and packaging, nutritional characteristics, food safety and other key technologies.

At present, the problems caused by the insufficient development of emergency food have initially appeared. First of all, during or after natural disasters, food in disaster areas and other affected areas may be contaminated by microorganisms and chemicals, and some food-borne diseases, including hepatitis A, typhoid fever and a series of intestinal diseases, such as cholera and dysentery, are prone to break out, thus affecting the health of victims and the effect of disaster relief.

Secondly, due to the imperfect design of emergency food formula,Its nutritional structure is difficult to meet the nutritional supply needs of specific people.It is difficult to predict the time and place of some emergencies, which also leads to the traditional supply chain processing equipment and storage and transportation system can not meet the stable supply and accurate distribution of emergency food, which makes the rescue efficiency decline.

This paper summarizes the types and characteristics of emergency food, the development status of product development, storage and transportation, processing and packaging technology, and looks forward to the research and development strategy, processing, storage and transportation strategy and food safety of emergency food in order to provide new ideas for the development of emergency food industry in China.

Types and characteristics of emergency food

With the frequent occurrence of emergencies around the world, the demand for emergency food is increasing. In order to better meet the nutritional needs of different rescue scenes and people, and combined with the laws of emergency food diversity, high energy density, storability and convenience for eating, a variety of common emergency food types have appeared in recent years, including canned food, compressed dry food, instant hot food, dehydrated food, etc. The advantages and disadvantages of different types of emergency food are shown in Table 1.

Table 1 Advantages and disadvantages of different types of emergency food

Emergency food has the following characteristics:

(1) Long shelf life: Emergency foods usually have a long shelf life to ensure edibility in emergency situations;

(2) Rich nutrition: under the premise of meeting basic energy, emergency food pays more attention to the functionality and special dietary effect of food according to the needs of the target rescue population;

(3) Portable: Emergency foods are usually packaged in light packages to quickly respond to emergencies;

(4) Food safety: Due to the harsh and changeable emergency rescue environment, the food safety of emergency food is very important.

When selecting emergency food types, it is necessary to make reasonable selection and planning according to disaster types, storage conditions, crowd demand and transportation environment. At the same time,Emergency food should be inspected and updated regularly to ensure food safety.

Development status of emergency food products

In recent years, China’s emergency food has developed steadily in terms of shelf life, taste, flavor and safety, but there is still a big gap compared with foreign countries. The shortcomings include:

(1) Low comprehensive performance. The diversity, nutrition and safety of emergency food need to be further strengthened;

（2）Functional development is limited.Due to the lack of practical experience in functional development and the lack of clear supervision and guidance standards, it is difficult for enterprises to carry out effective innovation and development;

（3）The production cost is high.The research and development of key technologies and formulas of emergency food are lagging behind and the added value is low, which leads to its lack of core competitiveness and affects production costs.

With the increasing market demand for serialized, functional, long shelf life and full nutrition emergency foods, continuous optimization, innovation and enrichment of R&D categories have become the key to the development of emergency foods.

With the development of science and technology,Emergency food is paying more and more attention to functions other than satiety and special dietary effects.Adding some ingredients or nutrients with special physiological functions to raw materials can enhance the overall functionality of emergency food.

At present, China’s self-developed "China 05 compressed food" has many functions, such as improving intestinal health, fighting hunger and promoting physical recovery, which greatly improves the efficiency of emergency rescue. Internationally, the United States has successfully developed military functional foods with different functions, such as anti-altitude sickness, anti-fatigue, refreshing the mind, quickly replenishing energy, improving intestinal function, etc. In order to meet the needs of different groups of people, modular foods with mineral modules, vitamin modules and energy modules have also been developed. Japan’s One Table Company has developed an emergency rescue jelly that is beneficial to swallowing, taking into account the people of all ages, so as to meet the needs of the elderly and children for quick nutrition supplement.

High-intensity rescue work in emergency rescue often makes rescuers in a state of physical and mental fatigue and overwork, which leads to inattention, weakened resistance and reduced work efficiency. Therefore,It is necessary to develop emergency food to delay or eliminate fatigue.

Hao Limin and others designed an anti-fatigue beverage formula, which was composed of oligosaccharides, taurine, caffeine, effervescent and other materials. It was processed into effervescent tablets by mixing, granulating, drying, cooling and tabletting. The animal test results showed that the beverage had obvious anti-fatigue effect. Wu Tianyi et al. conducted related research on anti-hypoxia functional fermented products. Through the screening of animal anti-hypoxia tests, it was found that natto and Schizophyllum commune fermented products from microorganisms had significant anti-hypoxia function, which provided a new design idea for the development of anti-hypoxia functional emergency food in the future.

Research status of emergency food storage, transportation and processing technology

In 2003, China began to pay attention to the research on emergency food storage and transportation, and compared with foreign countries, the research started late. In the "storage and transportation" system, food is generally classified and food quality standards are formulated to ensure food quality, facilitate transportation and improve rescue efficiency.The key to the efficient operation of the storage and transportation system lies in making full use of the electronic information platform.Ensure the coordination and mutual supervision of all links, strengthen the contact between emergency food storage and transportation and electronic information enterprises, so as to improve the rapid response ability of emergency food storage and transportation.

At present, there are many researches on food supply chain at home and abroad, covering the supply chain research of various specific food categories, such as fruits, vegetables, grain, etc. However, the research on emergency food logistics is rarely reported. The problems existing in the existing emergency food storage and transportation system in China are mainly summarized as the following four points:

(1) The layout of emergency material reserve centers around the country is unreasonable;

(2) Due to the asymmetric information flow and the large number of relief materials transfer stations in emergencies, the supply imbalance is prone to occur;

(3) Lack of procurement and operation standards for emergency food storage and transportation;

(4) The improvement of food safety evaluation system in the process of emergency food storage and transportation is not perfect, and the efficiency needs to be improved.

Compared with emergency food in developed countries,Domestic emergency foods generally have the problems of short shelf life and low scientific and technological content.The shelf life of self-heated rice and freeze-dried meat products introduced by American Mountain House Company can reach 30 years. The emergency food supply package launched by Wise Company is not only convenient and fast, but also can meet the needs of families, and its shelf life is as high as 25 years. In contrast, the shelf life of emergency food made of domestic Changwo special food by freeze-drying technology is not half as long as it is.

This shows that in the future, the development of emergency food in China should be oriented towards using emerging technologies to maintain the shelf life of food, thus developing a sustainable food value chain and limiting food waste. In order to prolong the shelf life, optimize the taste and promote nutrient absorption,More and more emerging processing technologies have potential application value.

1. Vacuum freeze-drying technology

Vacuum freeze-drying is to freeze the material below the eutectic point and remove the water in the material by sublimation in vacuum environment, so as to achieve the purpose of freeze-drying.It is common in military emergency food, which is used to improve the retention rate of nutrients and maintain the original color and flavor.Vacuum freeze-dried food can be stored at room temperature for a long time without adding preservatives because of its low water activity, and it is convenient to carry and transport.

Yang et al. used hot air drying, hot air vacuum combined drying and vacuum freeze-drying to dry the velvet antler mushroom. The results showed that vacuum freeze-drying could better keep the color and shape of velvet antler mushroom. However, vacuum freeze-drying has the disadvantages of time-consuming, energy-consuming and high cost when used alone, and these problems can be effectively solved by combining with other drying technologies.

Jiang et al. evaluated that freeze-drying combined with microwave vacuum drying was used to dry functional okra snacks. Compared with freeze-dried samples, the combined drying samples had better hardness and brittleness, and the drying time and energy consumption were reduced by about 75.36% and 71.92% respectively. Therefore,Vacuum freezing combined with vacuum microwave drying can be one of the development directions of emergency food drying.

2. Ultra-high pressure technology

Emergency food needs to have a long shelf life to ensure the safety and edibility of food in an emergency. Ultra-high pressure technology uses high pressure force to act on food,Without using high temperature or chemical additives, the shelf life of food can be prolonged by killing microorganisms and inhibiting enzyme activity, while maintaining the original flavor, color and nutrition of food.

Compared with traditional high-temperature treatment, ultra-high pressure technology hardly reacts with covalent bonds of small molecules, and only destroys non-covalent bonds that form the three-dimensional structure of macromolecules, such as hydration, ionic bonds and hydrogen bonds. By inactivating or activating biomolecules such as polysaccharide and protein in food, the product quality can be improved. It is found that soaking and ultra-high pressure pretreatment can increase the content of fast digestible starch and slow digestible starch in rice starch, and reduce the content of resistant starch, thus improving the digestion characteristics of rice.

It should be noted that ultra-high pressure sterilization technology is not suitable for all types of food, and the composition and structure of different foods have different sensitivity to pressure, so it should be tested according to specific products to determine the best treatment scheme.

3. Ultra-fine grinding technology

Ultra-fine pulverization technology pulverizes material particles to micron level by mechanical or hydrodynamic force, thus reducing particle size, changing composition and internal structure, and improving physical and chemical properties of materials. For example, ultrafine grinding canIncrease the solubility of foodSo that it can be easily dissolved with water or other liquids in a short time and quickly prepared into food; In addition, it can alsoEnhance the digestibility of foodSo that it can be absorbed and utilized by the human body in a short time and provide energy quickly, and reduce the burden on the gastrointestinal tract.

Sun et al. treated dehydrated celery stems with superfine grinding technology, and found that there was no significant difference in chemical composition of celery powder with different particle sizes. However, with the decrease of particle size of celery stem powder, its ability of scavenging free radicals was continuously enhanced, which provided a reference for developing fast-dissolving antioxidant functional foods. Zhang et al. treated oat bran by ultra-fine pulverization technology, which improved the surface properties, water holding capacity and swelling capacity of oat bran. The prepared oat bran powder has good physical and chemical properties and oxidation resistance. The data obtained from this study provide theoretical basis for the application of ultra-fine pulverization technology in emergency food deep processing and functional food development.

4. Microcapsule technology

Microcapsule technology is a new packaging technology, which forms a delicate and tough shell around liquid or solid core materials, so that the core materials can be packaged inside the shell. Nutrient fortification is a common technology to improve the nutrition of emergency food. However, many nutrients or functional components such as vitamins, probiotics and antioxidants are prone to degradation, oxidation and volatile loss during production, storage and transportation due to their unstable physical and chemical properties.Using microcapsule technology to embed nutrients and functional components can play a protective role, reduce the influence of external environment such as light, heat and oxygen, and at the same time make them be digested and absorbed when needed.Improve the nutritional value of emergency food.

The results show that adding microencapsulated nutritional fortifier ferrous sulfate to flour can mask the iron smell and avoid the rancidity of oil caused by direct addition. Das et al. successfully prepared anthocyanin extract from purple rice bran with modified glutinous rice starch as wall material by spray drying technology. Microencapsulation showed that the surface of microcapsules was more uniform and smooth than natural starch and modified starch, and the storage stability of microencapsulated anthocyanins was improved. Generally speaking, microcapsule technology provides a new possibility for emergency food, which can improve the taste and prolong the storage time while ensuring nutrition and convenience.

5. Nanotechnology

Nanotechnology can be used to enhance the nutritional value of food and improve its functional components. For example, processing nutrients to less than 100nm by nanotechnology can improve the absorption and utilization rate of nutrients by human body, which can solve the pain point problem that emergency food has low moisture content and is not easily absorbed and utilized by human body.

Nanotechnology can also improve the texture, taste and flavor of food, and be used to remove harmful pollutants in food, such as pesticide residues, heavy metals and harmful chemicals. The special properties of nano-materials enable them to adsorb or catalyze the degradation of these pollutants and improve food safety. However, the application of nanotechnology in food processing is still in its infancy. In the future, when nanotechnology is applied to emergency food, it is necessary to carry out risk assessment and strict supervision on the safety of nanomaterials to ensure the sustainable development of nanotechnology and food safety.

Research status of emergency food packaging technology

Food packaging is a very important processing link that affects the quality of emergency food. As a barrier layer of food, it can protect food from adverse factors such as external environment, microorganisms and pollutants, maintain food freshness, hygiene and safety, and extend its shelf life.Emergency food is usually stored by sealing, modified atmosphere and vacuum packaging. The packaging forms include vacuum aluminum foil packaging, composite nanotechnology packaging and edible film packaging.

In 2016, China developed the world’s first compressed packaging of disaster relief emergency food. By using this pre-foldable compressed packaging food, each logistics vehicle can carry 50% more goods, and the transportation and supply of disaster relief food is more efficient and faster, and the transportation cost is lower. In recent years, in order to prolong the shelf life of food and ensure the quality and safety of food, a variety of functional food packages have appeared in the market, such as antibacterial packaging that inhibits the growth of microorganisms, intelligent packaging that monitors the quality of food, and biodegradable environmental protection packaging.

1. active packaging technology

Active packaging is defined as an intelligent system, which aims to extend the shelf life and improve the quality of food through the interaction between packaging materials and the internal environment of food, so as to meet consumers’ demand for fresh, stable and safe food. Active packaging mainly includes antioxidant packaging and antibacterial packaging. Among them, antioxidant packaging can prevent food from deteriorating by absorbing oxygen or releasing carbon dioxide in the packaging, thus prolonging the shelf life of food. Common oxygen adsorbents include ethylene adsorbent, iron powder, activated carbon, biological enzyme and so on.

Antibacterial packaging mainly inhibits the growth of pathogenic and corrosive microorganisms in food by introducing antibacterial agents, prevents the migration of pollutants, and can also show the leakage of some packaging, thus ensuring food safety. These active packaging technologies provide a broader design idea for future emergency food packaging,So that it is no longer limited to dehydration and drying, and fresh food with better experience can be selected.

2. Nano packaging technology

Nano-technology involves the development of single or multi-dimensional materials less than 100nm. Studies have confirmed that packaging materials with nano-size have large specific surface area and small pores, which can effectively isolate the invasion of external gas, moisture and pollutants, prolong the shelf life of food and reduce the loss of food. In addition, the nano-packaging material has excellent mechanical properties,Can give packaging materials high mechanical strength and durability, and is suitable for use in harsh emergency environments.Therefore, nano-materials are expected to improve the mechanical and barrier properties of emergency food packaging.

On the other hand, the surface of nano-materialsAntibacterial agents such as nano silver can also be added to inhibit microbial growth and reduce food pollution and corruption.Thereby improving the safety of food. Compared with ordinary antibacterial packaging, nano-packaging has stronger anti-corrosion and fresh-keeping function, and is less affected by various extreme weather. In the future, with the continuous development of nanotechnology, nano-packaging materials are expected to provide better protection and quality control for emergency food, and ensure that people can get high-quality food supplies in emergencies.

3. RFID packaging technology（RFID）

RFID is a technology to automatically identify objects by using radio waves. Identification is accomplished by storing serial numbers or other information on a microchip connected to an antenna. Based on wireless communication, RFID can provide real-time information about temperature, relative humidity, nutrition and supplier information in the process of products passing through the supply chain, improve traceability and ensure food quality and safety.

The application of RFID in the field of military food packaging mainly focuses on the storage and transportation stage. By adding RFID tags to military food packaging, the whole process information tracking of military food in the distribution process can be realized through the one-object-one-code identification function of tag chip. In case of emergency, the whole distribution process needs no unpacking, and all the information of the product can be obtained directly by scanning the reader, including the processing information, storage status, transportation information and eating methods of the product, so as to realize the rapid and accurate replenishment of emergency food and improve the speed and accuracy of distribution.

At present, RFID technology has been widely used in the field of civil food packaging, and these experiences can be used for reference in the field of emergency food packaging.Realize the whole process tracking and management of emergency food supply chain, and improve the efficiency and quality of emergency food distribution.

4. Time-temperature indicator technology（TTI）

TTI technology aims to monitor the temperature changes in the food supply chain to predict the changes of food heat-sensitive nutrients and indicate the remaining shelf information of products, thus reducing food consumption and ensuring food safety. The basic working principle of TTI technology is based on the changes of machinery, chemistry, electrochemistry, enzymes or microorganisms, which are usually manifested as visible reactions in the form of mechanical deformation, color development or color movement. It can monitor and record some key parameters in the whole food distribution process,By combining the cumulative effect of time and temperature, the remaining shelf life of the product is dynamically displayed.In order to monitor the cumulative effects of time and temperature on specific products, TTI labels are usually attached to food packaging.

Compared with other temperature monitoring equipment, TTI is small in size and cost-effective, and can reflect the time and temperature changes experienced by food by displaying irreversible effects that are easy to observe. At present, the packaging method of emergency food usually follows the date of production, and the date of production and the time limit for eating are printed on the outer packaging. However, in an emergency situation, the quality and safety of food become particularly important due to the instability of storage and transportation environment. By using TTI technology, the quality and safety of emergency food can be better monitored and controlled, and whether the food has been infringed by the external environment can be found in time, which provides great guarantee for enhancing the safety of emergency food.

5. Edible packaging membrane technology

Edible packaging film refers to the packaging film with porous network structure formed by intermolecular interaction with edible materials such as protein, grain matrix, cellulose and other raw materials, supplemented by edible crosslinking agents, plasticizers and other substances.This packaging material can not only effectively protect food quality, but also reduce environmental pollution.

For example, the grain matrix film is usually made of soybeans, which is safe and harmless. At the same time, the packaged products also have the effect of moisture-proof and moisture-proof, which has a good effect on improving the quality of fresh-keeping foods. Compared with traditional packaging materials, edible packaging film has the characteristics of edibility, and it will not produce packaging waste after use, reducing the negative impact on the environment, making edible packaging film a more environmentally friendly choice.

Edible packaging film has a potential application prospect in the field of emergency food, which can provide good food protection and preservation effects, while reducing the generation of packaging waste. However, when edible packaging technology is applied to emergency food in the future,It is necessary to evaluate the stability and performance of this technology under various environmental conditions.

6. Biodegradable packaging technology

With the continuous development of new technologies and new resources, it is another research direction with great potential to use degradable, energy-saving and emission-reducing packaging materials instead of high-energy and refractory packaging materials. At present, researchers have done a lot of research on degradable packaging materials, and their barrier properties need to be improved when they are used in emergency food in the future.Designed as a biodegradable high barrier material.

Microfiberized cellulose material（microfibrillated cellulose，MFC）It is a biodegradable and widely used high-performance material, which usually comes from green beet pulp, bagasse and soybean skin, and is composed of a large number of cellulose microfibril aggregates. Lavoine et al. reported that microfibrillated cellulose materials and plastic film materials can be combined to form nano-composite packaging materials. Through surface chemical modification, the shortcomings of MFC materials in barrier performance and oxygen barrier performance were solved. However, due to the hydrophilic characteristics of bio-base, the moisture resistance of MFC nanocomposites needs to be further studied and improved.

In the future, intelligent packaging technology can be adopted to optimize the packaging barrier performance and design biodegradable multiple high barrier materials.

Prospect of emergency food development strategy

With the frequent occurrence of natural disasters and the increase of emergency situations, the complexity of rescue site environment and the diversification of rescue people, the development of emergency food in the future needs to introduce advanced scientific and technological innovation technology. For example, the use of Internet of Things technology, intelligent warehousing, scientific packaging technology, etc., to achieve traceability and monitoring of emergency food, improve the quality of emergency food and rescue efficiency. In addition, through the dimensions of raw material screening, formula design, texture reorganization, packaging design, etc., emergency foods in different scenes and target groups are developed to accurately match the nutritional needs of specific groups, increase their acceptance and satisfaction in emergency situations, and improve the quality and effect of emergency response.

1. Future research and development strategy of emergency food

Future emergency food is a kind of food that can quickly and accurately match the nutritional needs of specific people according to different emergency situations, and is convenient for transportation and storage. Based on the research results of emergency food in various countries, the future research and development strategy of emergency food in China can be carried out from three aspects: serialized emergency food, functional emergency food and high-tech application of science and technology.

1) Serialized emergency food.The serial development of emergency food is mainly adjusted and customized according to the dietary needs of different disaster environments and different people, which means developing diversified emergency food products.Including vegetarian, gluten-free, lactose intolerance and other products with special dietary needs to meet the needs of different groups of people.

To carry out the research strategy of emergency food serialization, especially for the needs of special groups such as the elderly, children and pregnant women, the following measures can be taken:

① Reasonable formula design, and develop emergency formula according to the nutritional needs and health status of special groups. For example, for the elderly and pregnant women, attention should be paid to the intake of protein, vitamins, minerals and cellulose; For children, energy requirements and digestibility need to be considered.

② Selection and treatment of ingredients. In order to meet the nutritional needs of the elderly and pregnant women, you can choose ingredients that are easy to chew and rich in protein and fiber; For children, you can choose ingredients that suit their taste and digestive system.

③ Safety and non-allergic guarantee. For pregnant women, children, the elderly and other special groups, it is necessary to ensure that food does not contain substances that may cause allergic reactions, such as peanuts, nuts, alcohol and so on.

④ Product form and packaging design. For the convenience of the elderly and children, it can be designed to be easy to open, chew and digest, and adopt easy-to-operate packaging methods, such as vacuum packaging and canned food.

2) Functional emergency food.The development of functional emergency food will pay attention to the nutritional balance of emergency food and the addition of functional ingredients, so as to meet people’s special needs in emergencies and slow down and eliminate the adverse effects of emergency conditions on human physiology or psychology. exploitationAnti-fatigue, anti-hyperreflexia, anti-anxiety, low temperature tolerance, help sleep, improve constipation and improve immunity.Functional emergency food is the focus of research and development of emergency food at present.

When natural disasters occur, they are often accompanied by water pollution, which will lead to serious gastrointestinal diseases and various infections. Studies have confirmed that bioactive substances can be used to treat some diseases, improve the function of biological systems or resist pathogens. For example, intake of polyunsaturated fatty acids can alleviate intestinal inflammation by changing intestinal flora and enhancing intestinal cell barrier function; Polyphenols such as curcumin can reduce the stress of endoplasmic reticulum, thus reducing the inflammatory response of human intestinal epithelial cells.

Previous studies have shown that intestinal inflammation can be improved not only by drugs, but also by improving dietary intake and increasing the intake of polyunsaturated fatty acids, dietary calcium and vitamin D, thus improving intestinal health.

For example, increasing the dietary fiber content in emergency food can promote intestinal peristalsis and defecation, and prevent constipation and gastrointestinal problems; Adding probiotics or fermented food can improve the balance of intestinal flora, enhance the function of immune system and reduce the risk of gastrointestinal infection; Foods rich in vitamin C and antioxidants, such as citrus fruits and vegetables, help to enhance the immune system function, improve the body’s resistance and reduce the risk of infection.

All in all,By improving the nutritional composition of emergency food, we can alleviate the intestinal problems caused by disasters and help people stay healthy in difficulties.The above measures can help to improve the health effect of emergency food on intestine, but in practical application, the preservation and storage conditions of food need to be considered to ensure the safety and nutritional value of food.

3) The application of scientific and high technology.The introduction of high technology is of great significance to the breakthrough of emergency food in shelf life, nutrition and functionality. In terms of extending the shelf life, methods such as microbial control, vacuum packaging and irradiation sterilization can be adopted. In terms of improving nutrition, nutritional enhancers or functional ingredients can be added to emergency food to enhance its nutritional value.

In terms of improving functionality, high-tech can be used to develop emergency food with specific functions, for example, adding natural antioxidants, humectants, thickeners, etc. to increase the antioxidant capacity, water retention and taste of food. In addition, the use of nanotechnology can improve the texture and taste of food. In the aspect of personalized nutrition enhancement, it can be combined with wearable equipment and sensors. According to the results of physiological testing,(such as lack of potassium or vitamin A)Form personalized demand data, send it to the processing base, and generate special nutritious fortified food made of seasoning liquid and powder through additive manufacturing.

To sum up, serialized emergency foods can meet the dietary needs of different groups of people, while functional foods pay attention to nutrition and special needs, while the application of science and technology and high technology is helpful to improve the quality stability, nutrition promotion and functional supplement of emergency foods. These strategies will promote the further development of emergency food in China in the future and ensure that people can get a safe and balanced food supply in disasters.

2. Emergency food processing storage and transportation strategy

Emergency food is an important relief material for survival under emergency conditions, which requires extremely high production environment and product quality in the supply chain.Therefore, it is necessary to establish an automatic, flexible and digital intelligent supply chain system.The following measures can be taken in the production of emergency food in the future.

1) Introduce intelligent equipment.Through intelligent sorting and cascade utilization technology of raw materials, artificial intelligence combined with deep learning of photoelectric equipment, inductive classification combined with manual assistance, the process parameters in the production process are continuously optimized, and a demand-oriented raw material supply system is established, which can realize the automation of raw material pretreatment and processing, reduce the risk of human subjective errors and cross-contamination, and achieve the effect of improving quality and reducing cost.

2) Build a flexible supply chain.Based on the production requirements of serialization, functionalization and science and technology of emergency food in the future, flexible supply chain can help enterprises optimize resource allocation and utilization, thus reducing costs. For example, according to the production demand of emergency products, enterprises promote the digital transformation of production processes to ensure product quality, efficiency and sustainable production capacity; In addition, through flexible adaptation of intelligent filling and packaging technology, we can quickly switch and adjust product specifications and packaging methods, so that enterprises can quickly respond to changes in market demand and improve emergency rescue efficiency.

3) Establish a digital monitoring system.By introducing precise temperature control technology and RFID technology, the key parameters of the process, such as temperature, humidity, flow rate and speed, can be collected in real time by sensors and monitoring equipment, so that the abnormal situation can be adjusted in time to ensure that the products meet the standard requirements. At the same time, considering that the time and place of emergencies are difficult to predict, the joint application of the Internet of Things and smart packaging technology can track the location, transportation conditions and quality of emergency food in real time, and combine with the logistics management system to carry out intelligent distribution and route optimization in real time according to the changes of disaster situation, so as to achieve the best transportation efficiency and save costs.

Different from ordinary food, the demand for emergency food will be affected by various factors.In the future, the development of emergency food should adopt modular design, that is, food should be grouped and packaged according to function or proportion, so that people can choose and combine different types of food according to their needs.And ensure the balanced nutrition of food. Modular design of emergency food has the advantages of flexible selection, balanced nutrition, easy carrying and storage, and improved emergency response flexibility, which can play an important role in future emergency rescue.

3. The prospect of emergency food safety.

There are some harmful substances such as mycotoxins, heavy metals and allergens in the production, processing and transportation of emergency food.It is of great practical significance to establish an emergency food quality management system, analyze the potential hazards in the production process and continuously monitor them.

In recent years, the rapid nondestructive detection technology of food and food raw material hazards has been widely used in the field of food detection and sorting, such as multi-spectral imaging technology, hyperspectral imaging technology, terahertz spectral imaging technology and so on. Because it is simple, rapid and nondestructive, and can obtain the image and spectral information of the detected substance at the same time, it has potential application prospects in food quality and safety detection, mainly including variety identification, adulteration analysis, quality and hazard detection and a series of applications.

Shi et al. realized the rapid nondestructive detection of Fusarium graminearum and vomitoxin in wheat by multi-spectral imaging technology, and explored a new method for monitoring mycotoxin pollution in wheat production, processing and storage. Liu et al. can monitor zearalenone in corn quickly and non-destructively through multi-spectral imaging combined with machine learning technology.（ZEN）The content of mycotoxin is of great significance to the monitoring of mycotoxin pollution during corn storage and transportation.

Du et al. realized the rapid detection of Staphylococcus aureus enterotoxin B in milk by Raman spectroscopy and stoichiometry, which ensured the safety of milk. Liu et al. quickly determined the concentrations of aflatoxin B1 and benzopyrene in soybean oil by terahertz spectroscopy combined with chemometrics, which provided an effective means for food safety monitoring.

In addition, harmful substances, microbial contamination and chemical residues in food processing seriously affect the quality and safety of food. Therefore, through the rapid detection technology of food hazards in the processing process, it can help manufacturers to respond quickly and reduce or avoid unqualified production operations.

Traditional on-line detection technology often has some shortcomings, such as requiring large equipment and professional operators, and complicated pretreatment.Electrochemical detection methodIt has the advantages of high sensitivity, quick response, real-time monitoring and selectivity. By measuring and analyzing electrochemical signals such as current and voltage in food raw materials, it can be judged whether there are harmful substances.

Gao et al., from the perspective of electrochemical detection, used the electrolyte gate-controlled graphene transistor with two-dimensional graphene as the channel material to realize the rapid identification of the freezing and thawing degree of beef. Mao et al. aim at heavy metal Cr in aquatic products（VI）In order to solve the pollution problem, two-dimensional monatomic iron material is used as the colorimetric sensor of peroxidase to detect Cr in fish quickly and simply.（VI）, and achieved good expected results. Zhu et al. developed a portable aptamer sensor, which has the characteristics of simple operation and portability, and can simultaneously detect T-2 toxin and zearalenone in corn and oat flour, thus realizing the on-line detection of mycotoxins during processing.

In the future, multi-functional electrochemical biosensors and nano-devices can be constructed through electrochemical aptamer joint detection technology, so as to realize the detection of complex hazards such as benzopyrene and allergens in the production process and ensure the safety and stability of food quality in the production process. The flow chart of future emergency food research and development strategy is shown in Figure 1.

Figure 1 Future Emergency Food R&D and Development Strategy Process

conclusion

In recent years, emergencies have occurred frequently in China, and the demand for emergency food has been rising continuously. Especially after the COVID-19 epidemic, China residents’ awareness of food nutrition and safety has been continuously enhanced, and food is required to have certain functionality while meeting basic energy. Therefore, one of the first tasks in the post-epidemic period is to accelerate the research on emergency food.

For the development of emergency food in China, there are many problems in the process of modern rescue, such as insufficient nutrition supply of emergency food, imperfect functional food and difficulty in accurate distribution. Based on this actual situation, the design and development of rescue food with complete nutritional functions, convenient eating and convenient storage and transportation, and the realization of industrial production can not only meet the national emergency relief needs, but also fill the food shortage of emergency relief materials.

By analyzing the development gap of emergency food at home and abroad and thinking about the future development trend of food, this paper puts forward three research and development directions of emergency food, and produces a series of safe, fresh, nutritious and stable emergency food through intelligent supply chain and accurate and efficient detection technology, so as to make it have core competitiveness and greater development space in the market, and gradually open and improve the emergency food market in China.

Acknowledgement: Professor Hao Limin, Institute of Quartermaster Engineering Technology, Institute of Systems Engineering, Academy of Military Sciences, gave advice and help; Support of agricultural eco-environmental protection and quality and safety industrial technology system in Anhui Province.

This article comes from WeChat WeChat official account:Science and technology herald (id: streview), published in Science and Technology Herald, No.19, 2023, by Ning Cheng (Ph.D., School of Food and Biological Engineering, Hefei University of Technology), Liu Changhong and Zheng Lei (correspondent, same as before, professor).

　　Life is easy to get old, but it’s hard to get old. The ninth day of the ninth lunar month is China’s Double Ninth Festival, which is also called "Old People’s Day". Respecting the elderly is the traditional virtue of the Chinese nation. Just after the Double Ninth Festival, Luo Tianjiong, director of the geriatrics department of Nanjing Hospital of Traditional Chinese Medicine, sent nine health guides, aiming at caring for the elderly and caring for their health.
Correspondent Xia Fan Yangzi Evening News/Zi Niu News Trainee Reporter Lu Yanlin

　　1. Pay attention to fall prevention.

　　Due to the increase of osteoporosis and bone fragility, the elderly are prone to fracture, soft tissue injury, psychological trauma and other serious consequences when they fall, and their incidence rate rises sharply with age. Luo Tianqiong said that the elderly need to pay attention to the prevention of falls at home, shoes should be anti-slip, and the light should be bright enough. Once they fall, they should be actively sent to the hospital. 48 hours after the fall of the elderly is the prime time for treatment.

　　2. Reasonable diet and balanced nutrition

　　Light diet, less oil and salt, fresh and hygienic food, and balanced nutrition. The diet is mainly cereal, with a matching thickness. Eat regularly and quantitatively, chew slowly, ensure that there are vegetables in the meal and fruits every day, take in some high-protein foods such as fish, meat and eggs, often drink milk to supplement calcium, and take vitamin D in the sun for 15-20 minutes every day to promote the absorption of calcium, actively replenish water and pay attention to prevent sunburn. Advocate not smoking, drinking less and drinking too much.

　　3. Exercise properly and do what you can.

　　With the growth of age, many elderly people are more and more reluctant to exercise. Although they understand that proper exercise can promote health, what they don’t know is that due to lack of exercise, elderly people often suffer from decreased resistance, muscle atrophy, physical decline, etc. Over time, diseases come one after another. It is suggested that the elderly choose appropriate exercise methods, such as walking, square dancing, Tai Ji Chuan, Baduanjin, etc., and the exercise intensity should be tolerated by individuals.

　　4. Ensure sleep and take a proper lunch break.

　　The sleep of the elderly is shallow and easy to wake up. Half of the elderly in China have sleep disorders. Long-term lack of sleep will cause mental fatigue, dizziness, weakness of limbs, etc. Luo Tianjiong suggested that the elderly should ensure six hours of sleep and take a proper lunch break for half an hour every day, which is conducive to physical and mental health. When insomnia occurs, they can massage points such as Neiguan, Shenmen and Sanyinjiao to help sleep.

　　5. Brush your teeth frequently, wash your hands frequently and take a bath frequently.

　　Brush your teeth in the morning and evening, and rinse your mouth after meals. For the elderly with dentures, brush them clean and soak them in cold water when not in use, and change your toothbrush every three months. Wash your hands and bathe frequently to resist the invasion of bacteria and enhance your resistance.

　　6, keep the stool unobstructed

　　Due to the continuous decline of physical function, the gastrointestinal peristalsis of the elderly will also be very obvious, often manifested as constipation. In view of constipation of the elderly, Luo Tianjiong suggested keeping the habit of regular defecation, drinking more water, not eating laxatives indiscriminately, or massaging the abdomen clockwise around the navel to relieve constipation.

　　7. Don’t stop drugs for chronic diseases.

　　Many elderly people think that chronic diseases such as hypertension and diabetes have no impact on their lives, so they choose to stop taking drugs, but they don’t know that stopping taking some drugs is likely to cause recurrence or "rebound" of the original diseases and even accidents. Luo Tianqiong stressed that if there is a need to stop taking drugs, you must first consult a doctor and gradually stop taking drugs under the guidance of a doctor.

　　8. Keep a good attitude

　　Luo Tianjiong reminded that emotional excitement and bad emotions will affect the physical and mental health of the elderly, keep a calm mind, communicate with people more, and avoid depression, anxiety and mood swings, especially patients with basic diseases such as hypertension, heart disease and cerebral infarction.

　　9. Strengthen self-health management.

　　Director Luo Tianqiong said that it is very necessary for the elderly to have a physical examination. It is necessary to actively prevent the occurrence and development of diseases, so as to achieve early detection, early diagnosis and early treatment. It is recommended that the elderly have a physical examination once a year, and people with basic diseases should have regular physical examinations on the advice of doctors, and be responsible for individuals and their lives.

　　Finishing | Wu Xue

　　I am a courier and a "organizer".

　　At 5: 00 a.m. on February 13th, I woke up in a bunk bed in the express warehouse outside the Second Ring Road in Wuhan. This warehouse was a little special, and it happened to be built at the sewer crossing. It was damp and cold. I picked up the thermometer and took my temperature, which was no more than 36 degrees. I looked at my mobile phone calendar before going out. It turns out that I haven’t been home for 22 days.

　　Yong Wang has been living in the company warehouse these days.

　　I’m Yong Wang, born and raised in Wuhan, and I’m an ordinary post-80s courier brother. From morning till night, I work hard day after day to deliver, pack, deliver and move goods, which is enough for a family of three. I throw myself into the battle every day when I wake up, like a "top" wound up. At the beginning of February, reporters came to me one after another to follow up the interview. I never thought that I would become a news figure in this epidemic.

　　Seeing the nurse home, she cried all the way

　　Things should start from the New Year’s Eve. Because of the epidemic, the courier company had a holiday. In the evening, I closed the warehouse and returned home to have a reunion dinner with my relatives. At 10 o’clock in the evening, when I was going to coax my daughter to rest, I suddenly brushed into a circle of friends from a nurse in Wuhan Jinyintan Hospital. The other party wrote: "Help, we are restricted here. There are no buses and subways, and we can’t go home. It takes four hours to walk back." The demand was released at 6 o’clock, and no one took the order.

　　Yong Wang in protective clothing.

　　"Go or not" at that time, I was struggling, but I really wanted to do it. I didn’t dare to tell my family that I spent an hour alone in psychological struggle. Finally made up my mind to "go". My wife is a psychologically fragile person and has never experienced any major events; Parents are getting old again, so we can’t let them worry. So, I decided to take this matter alone — — Keep it from them with white lies.

　　The first question is how to get out. The nurse who issued the bill was on the night shift at six o’clock the next morning. I told my wife that there was a temporary need for the staff on duty at the outlet, and I was sent to be on duty, so I managed to hide it smoothly. At that time, I didn’t have any protective equipment in my hand, so I went to the supermarket to buy two N95 masks and arrived at Jinyintan Hospital on time at six o’clock. The nurse paused when she saw me. "I didn’t expect anyone to take this bill." Then, she got on the bus, said nothing all the way, sobbed silently until she got off the bus.

　　On the first day, I sent more than a dozen medical staff to and from Jinyintan Hospital. At the end of the day, my legs kept shaking. To tell you the truth, I’m scared in my heart. What if I get infected? I began to retreat and persuade myself, "Forget it." But when I saw a nurse sending a bill at night, the destination was dozens of kilometers away from the hospital, and no one answered it. Suddenly changed his mind.

　　I made up a second "lie" and told my wife that I was in contact with a suspected patient and was afraid of being infected. I could only sleep in the express warehouse for 7 days and go home without any problem. At first, my wife didn’t listen to my explanation and cried bitterly. Later, when her mood was stable, she agreed. And slowly, with more contact with medical staff, I began to understand why they would rather walk than go home when they take a break.

　　In fact, in the week before the national medical rescue team came, all the medical staff in Jinyintan fought all night, 10% of them could sleep in bed, and the rest were armchairs; The groans of patients and the 24-hour call on walkie-talkies are unbearable for anyone, let alone have a good rest. Therefore, even if they walk for four hours on the road, it is a short rest for them.

　　The medical staff took a short nap in the armchair.

　　The medical staff took a short nap in the armchair.

　　On the fourth day of the Lunar New Year, more and more medical teams supported Wuhan, as if giving them a "shot in the arm". That day, I was supposed to pick up a doctor to go to work, when I suddenly received a phone call from her: "Master, you don’t have to pick me up. I can take a day off today." At that time, I was very happy. I built a medical service group and more and more people entered. I began to find that even if I tried my best, I could only meet the demand of 300 kilometers.

　　Recruit volunteers to transport medical staff together.

　　So, I began to post news in my circle of friends to recruit volunteers, insisting that I must live alone and wear protective equipment. If the answer is no, I will refuse them. Next, twenty or thirty people followed me in turn, and we broke three cars in the middle. Later, six cars basically met the demand. But it is still not a long-term solution, and some people suggest that we can find resources.

　　We first contacted mobike, and their delivery efficiency was very fast. All points in hospitals and hotels and vehicle personnel were in place in one day, which solved the travel demand of about 2 kilometers; Then docking Didi, because the process of big companies is cumbersome and takes a long time, and it takes a week to get it done. In order to meet the travel needs of medical staff in Jinyintan Hospital outside the Third Ring Road, Didi directly changed the number of kilometers received from less than 3.5 kilometers to less than 15 kilometers.

　　Green orange bicycles set up service points on Panlong Bridge.

　　The docking of green orange bicycles was also completed within three days, and 400 bicycles were put into use. From the aspects of operation and maintenance, cost and delivery, there was a special team management, which completely solved the travel problem at once. In those days, every night, I had to take an hour to play video with my family. I was afraid to disclose the recruitment and help information to my family in my circle of friends, but with the increase of the number of trips abroad, the task became more and more busy, and this matter could no longer be concealed. My wife was very flustered when she knew it. I did ideological work and finally expressed my support and understanding.

　　It’s just that my two-year-old daughter is very attached to me. At night, she clamors to sleep with her father. If she can’t find it, she just sits in the corner and cries. On the Lantern Festival, I watched the video of her kissing and kissing on my photo, and I felt particularly guilty and missed my family.

　　But I know that I can’t stop. The medical team that rushed to Wuhan is our "lifesaver". The government has arranged for them to have food and a place to live, but the details may not be taken care of. We can check and fill the gaps and try our best not to mistreat them.

　　Wang Yong’s family

　　Yong Wang’s daughter saw her father’s photo and kissed her.

　　Want to eat rice, we settled a restaurant.

　　At the beginning, we raised 22,000 yuan to provide instant noodles and water for night shift medical care. Later, a nurse sent a circle of friends saying that she really wanted to eat rice. After seeing it, I was so sad that I made up my mind to let them eat white rice the next day. Soon, a restaurant owner docked, 16 yuan a copy, more than 100 copies a day. The next day, the owner of a restaurant in Wuhan came to me and said that 1500 lunches a day could be provided free of charge to Jinyintan Hospital, Xinhua Hospital and Union Medical College Hospital respectively.

　　The dining problem has been solved, but I have found another new situation: the load of docking restaurants is too great and the production capacity has reached its peak. I began to imagine whether we could have a special restaurant for meals under the condition that many existing resources are tilted. I soon began to implement it. I went to more than 20 restaurants a day to talk about cooperation, and asked one by one if we could use the venue and staff for free or at a low price. Soon, the owner of Jinjiushan Restaurant agreed with our goal and hit it off.

　　Jinjiaoshan restaurant began to serve meals free of charge.

　　On February 3rd, Jinjiaoshan Restaurant began to provide meals, with two meats and one vegetarian, which quickly satisfied the dining problem of Jinyintan Hospital. The rest of the production is supplied to Didi drivers for 240 copies every day. Since others are here to help us, we should not graft the risks to others. Unfortunately, on February 7, the local food safety department in Wuhan closed the restaurant and demanded to stop business.

　　The reason is that during the critical period of the epidemic, only a few designated units are allowed to produce meals, and this qualification cannot be applied for at present. After a day of unsuccessful communication, in desperation, we contacted several designated catering units and found that the other party said that the cost of a box lunch was 40 yuan, and the funds we raised could not afford it at all.

　　I was very frustrated at that time, but then things began to turn around. Today Convenience Store, a local enterprise in Wuhan, has solved the dining problem: providing all the support teams in Jinyintan Hospital with meals every day, and supporting Didi owners with 300 free lunches every day. I finally breathed a sigh of relief that day.

　　Materials provided by Today convenience store to medical staff

　　Free box lunch provided by Today convenience store

　　I don’t have any resources, but I am ready to respond.

　　I am a person without any resources, but along the way, I am especially grateful to the volunteers and big companies for their help. Everyone is working hard for this matter. I am just a person who organizes the bureau. Travel, dining — — Each group has a bureau, and I will give it to one person to manage it, and then I will free my hands to do other things. Because I have much contact with medical staff on weekdays, I know their current situation best, and life support is also essential.

　　For example, if the glasses are broken and the screen of the mobile phone is broken, you need to buy slippers, nail clippers, chargers and even autumn clothes and trousers, and shout through the solitaire in the group, and someone will soon purchase them to help them get it. I remember one time, two doctors of Shanghai Medical Team celebrated their birthdays. We bought them cakes and had an unforgettable birthday. Another time, because the air conditioner in the hospital couldn’t be turned on, the medical care lacked sleeveless down jackets for warmth. We spent 100,000 yuan to buy all the down jackets of Shangchao, and ordered 1,000 pieces of Uniqlo in Guangzhou.

　　Master Gan, a volunteer hairdresser, has been on duty for 5 times and received rave reviews.

　　Yong Wang docking service in the group Anhui assistance Wuhan intensive care unit.

　　Yong Wang organized volunteers to buy birthday cakes for the Shanghai medical team.

　　One thing that impressed me the most was that the medical staff needed a batch of protective shoe covers, and the whole city of Wuhan was out of stock. Later, a merchant was found on Taobao, but in gedian, Ezhou, 55 kilometers away from Wuhan, because the merchant was also a confirmed patient in COVID-19, the express delivery could not be made. I drove to get it overnight and brought back 2000 pairs.

　　I keep doing things and solving problems every day. I don’t know when I will stop, but as long as the medical staff calls me, I am always there. Up to now, we have docked a total of 1,000 medical staff, and then we will dock 3,000 medical teams that rushed to Wuhan.

　　On February 2, Yong Wang released a circle of friends and wrote: I have lived for so many days, but the nurse’s concern made me cry.

　　People can’t touch such a big thing in their lives. No matter what they do, they do their best and have no regrets. Actually, when I think about it, my original intention to do this is very simple. One day, picking up and dropping off a medical staff can save four hours, and picking up and dropping off 100 people is 400 hours, 400 hours. I earn money no matter how many people the medical staff can save.

　　On the evening of February 13th, my mother’s friend saw my video and told my mother by phone, expressing great support to me. In the eyes of relatives and friends, I have never been a worry-free child since I was a child. Until now, my parents are still worrying about me, helping me take care of my children and subsidizing my family. Fortunately, what I have done this time has not humiliated you.

　　The Central Meteorological Observatory issued a blue rainstorm warning at 18: 00 on August 29:　

　　It is estimated that there will be heavy rains in parts of southern Gansu, southwestern Shaanxi, western Sichuan Basin, central and western Yunnan, northern Heilongjiang, central Inner Mongolia and southeastern Tibet from 20: 00 on August 29th to 20: 00 on 30th, among which there will be heavy rains (100-200mm) in western Sichuan Basin and western Yunnan. Some of the above areas are accompanied by short-term heavy rainfall (the maximum hourly rainfall is 20 ~ 50 mm, and the local area can exceed 60 mm), and there are strong convective weather such as thunderstorms and strong winds.

　　　

　　Defense guide:　

　　1. It is suggested that relevant departments should do a good job in emergency defense against rainstorm according to their responsibilities;　

　　2. Cut off the outdoor power supply in dangerous areas and suspend outdoor operations;　

　　3, do a good job in urban and farmland drainage, pay attention to prevent possible disasters such as flash floods, landslides and mudslides.　

　　(Editor: Wang Meili)　

Bid for 350 thousand? Guangzhou Auto Show will be unveiled soon.

According to the previous news, Huawei will also launch a model between M7 and M9 to fill the gap in the market, that is, Wenjie M8. The M8 will be unveiled at the Guangzhou Auto Show in November, and recently the rendering of the car was exposed on the Internet.

This set of renderings comes from the appearance declaration of Celestial in China Patent Network. As the manufacturer of Jiejie automobile, Celestial announced the appearance patent drawing of the brand-new model at this time, so we judged that this automobile is Jiejie M8.

From the exterior view, the closed air intake grille of the new car has a ring-shaped light strip, which is the first time that the ring-shaped light strip element appeared in the car family of the car, which is completely different from the previous car series.

The new car uses a hidden door handle, and the lidar on the roof indicates that the new car will still provide Huawei ADS 3.0 advanced intelligent driving system. At the same time, on the left and right sides of the car body, there is an energy-supplementing cover plate, which means that the new car can be powered by oil and electricity and will provide extended-range power.

As for the price, the price of the M8 product in the world is positioned before M9, and the same price will be between 249,800 and 469,800. We predict that the price of the M8 product in the world will be 359,800 yuan, which is a better choice for car buyers who can’t meet the appearance design of M7 and reach the consumption level of M9 at a more reasonable price.

Since its debut, FAW-Volkswagen B9 has quickly won enthusiastic response from the market with its diversified configuration options, especially its 1.5T high-efficiency power system, which shows more outstanding performance compared with the one launched in the same period, and has become the first choice in the hearts of many consumers. So, what remarkable changes has this Magotan B9 brought? How impressive is its actual performance? Let’s explore together. Magotan B9 also performs well in sound insulation, and its body structure and the use of sound insulation materials effectively isolate the noise inside the car. Both urban driving and high-speed cruising can provide drivers and passengers with a quieter ride environment. In contrast, Passat Pro’s sound insulation effect is slightly insufficient.

Body size comparison, performance of Magotan B9

The body size of Magotan B9 is 4990*1854*1487mm, and the wheelbase is 2871mm. Compared with the old models, the size of Magotan B9 is a big circle, which belongs to the mainstream level in the same class, and the interior space has also been greatly improved.

Larger air intake grille and exquisite chrome decoration

On the front face, the new Magotan B9 adopts a larger air intake grille design, and the chrome decoration also highlights the exquisiteness of the vehicle, which is closely connected with the whole China Net. The diversion grooves and fog lamps on both sides of the bottom form a sports kit, which is also the difference between the Magotan B9 and the old models. In addition, the front enclosure is decorated with a honeycomb grid and a diffuser is designed to enhance the sense of movement of the vehicle. Coming to the side of the car body, the new Magotan B9 is not much different from the design of the old models in terms of lines. The sharp waistline runs from the front of the car to the rear of the car, lengthening the visual effect of the vehicle. The side skirt is decorated with chrome plating, so you don’t have to worry about bumping when the vehicle is driving in bad road conditions. In terms of the rear end, the Magotan B9 model has not changed much, and the penetrating taillight components have high recognition after lighting. The rear enclosure is also designed in a sporty way to show the difference between Magotan B9. The rear enclosure is decorated with chrome, and the diffuser decoration is designed in the middle, and the exhaust pipe decoration is cancelled.

Central control led by big screen, analysis of new Magotan B9 configuration.

After arriving in the car, the interior design of Magotan B9 hasn’t changed much, but the details have been adjusted. The automatic comfort type and the automatic enterprising type adopt an 8-inch central control screen, while the automatic enjoyment type and the automatic luxury type adopt a 9.2-inch central control screen. Unfortunately, the wireless charging of the mobile phone is changed to optional. A penetrating air outlet is added to the center console to enhance the sense of interior grade, and a roller shutter is also added to the cup holder area, with little change in other aspects. The steering wheel adopts a flat-bottomed design, which increases the sports atmosphere of the interior. Magotan B9 comes standard with tire pressure reminder, cruise control, automatic parking, uphill assist, engine start and stop, LED daytime running lights, automatic air conditioning, rear seat air outlet, temperature zone control, heating, electric folding, automatic folding after locking, etc. As a joint venture medium-sized car, this configuration is relatively rich.

Strong performance of 1.5T and 2.0T engines.

Magotan B9 is equipped with 1.5T and 2.0T engines, matching with a 7-speed dual-clutch gearbox. Among them, the 2.0T turbocharged four-cylinder engine has a maximum power of 220 HP and a peak torque of 350 Nm. Equipped with a 7-speed wet dual-clutch gearbox, it provides four driving modes: economy, comfort, sports and personalization to meet different driving needs. The official acceleration time of 100 kilometers is 7.4 seconds, while the comprehensive fuel consumption of WLTC is only 6.71L/100km, which shows excellent performance and low fuel consumption. Therefore, the overall power and acceleration feeling of Magotan B9 is still excellent. In addition, the comprehensive fuel consumption of the 1.5T model is 5.85 liters per 100 kilometers, which has more obvious advantages in fuel economy.

Generally speaking, this car is still very good. MagotanB9 and Magotan B9 are national family cars. The new generation of Magotan B9, which has just been listed, seems to stand out from the crowd. The novel design and larger interior space also make it a little fresh. Of course, Magotan B9 still has the aura of "national sedan", which is probably the only place where Magotan B9 is higher than other models. What do you think of this car? Some netizens teased: There is no national sedan outside Magotan B9.

Du Ai loves Zhu Ting (left) who was voted out of the Olympic list.

Due to Qu Feifei’s accidental injury, veteran Xie Caixia (right) was lucky to stay in the 22-man women’s Olympic team.

　　■ Reporter Zhang? Zhang Jianqiang and Zhou Wanqi

　　Yesterday was the deadline set by the International Olympic Committee for athletes to register for the Beijing Olympic Games. With the arrival of this date, the list of players in some events of "China Legion" has been announced one after another. An official of the State Sports General Administration revealed that the list of China sports delegation will be announced on July 25th, when the inaugural meeting of China delegation will be held.

　　What are the mysteries in the list of some projects that have been announced so far?

　　Men’s Football Team: "Dui Trace" is dying out.

　　Yesterday was the deadline for national men’s soccer teams to report to FIFA the list of 18 people who will eventually participate in the Olympic Games. Zhu Ting, Shen Longyuan, Zhang Lu and Lin Dai were finally voted out of the list of 18 contestants.

　　Some time ago, the Olympic team had just arrived in Changchun for training and had finalized a list of "18+4". At that time, in this list, the four players who became substitutes were Zhao Xuri, Hao Junmin, Lin Dai and Liu Zhenli. At that time, Dewey still had the command of the Olympic team’s training and competition, so Dewey naturally participated in the formulation of this "18+4" list. However, the original "18+4" list began to change subtly after Dewey left. After the warm-up match between the Olympic team and the Australian Olympic team last Sunday, it directly led to the adjustment of the list. In that warm-up match, Hao Junmin not only got the starting opportunity, but also performed well. Although Zhao Xuri came off the bench, he scored the only goal. Their status made the coaching staff finally decide to put them back on the 18-person list.

　　In the position of goalkeeper, Zhang Lu and Liu Zhenli are both substitutes, and their strength is similar. In the end, the coaching staff decided to keep Liu Zhenli in the 18-man list and eliminated Zhang Lu from the perspective of his richer experience in the Super League. Although there are rumors that Wang Yongpo, Mao Jianqing and others have returned to the Olympic team, according to the rules of the Olympic football competition, except for the "tragedies" like Hai and Qu Feifei, the doors of Wang Yongpo and Mao Jianqing’s return to the Olympic team have been completely closed.

　　After Hao Junmin and Zhao Xuri re-entered the 18-man list, which two players to choose as substitutes was a headache for the Olympic coaching staff. However, judging from the details that Shen Longyuan came off the bench in the second half of the China-Australia War but was replaced before the end of the game, the outside world has already noticed that Shen Yuanlong’s situation is very dangerous. Sure enough, Shen Longyuan was finally excluded from the list of 18 people. There are two reasons for his defeat: one is that he is injured at present, which affects the recovery of his state; Secondly, his position is relatively simple, and he can only play right avant-garde.

　　As for Zhu Ting, in the "Duy era", he was an absolute main force in both the Olympic team and the national team. However, through the top 20 matches of the national football team, almost everyone saw Zhu Ting’s weakness-he can only run but not score goals. In the last two warm-up matches of the Olympic team, Zhu Ting has stopped playing, and it is not surprising that Zhu Ting lost the election this time. However, the defeat of Zhu Ting and Shen Longyuan, two love generals of Dewey, will make people feel that the Olympic team is deliberately cleaning the traces left by Dewey.

　　List of 18 members of China Olympic team

　　Goalkeepers: Shengjiong Qiu and Liu Zhenli.

　　Defenders: Li Weifeng, Yuan Weiwei, Feng Xiaoting, Wan Houliang, Tan Wangsong and Lv Jianjun.

　　Midfielders: Zheng Zhi, Zhao Xuri, Zhou Haibin, Kelvin Cui, Hao Junmin and Chen Tao.

　　Forward: Jiang Ning, Han Peng, Dong Fangzhuo and Gao Lin.

　　List of four substitutes:

　　Shen Longyuan, Zhu Ting, Lin Dai, Zhang Lu

　　Women’s Football Team: Guangdong’s Xie Caixia was lucky to be shortlisted.

　　On July 21st, the day after China beat New Zealand 1-0 in the warm-up match, the 22-member list of China women’s football team participating in the Olympic Games was announced in advance. Because Qu Feifei was seriously injured in the Sino-Singapore warm-up match, the big list changed slightly. Five players, Liu Yali, Song Xiaoli, Lou Xiaoxu, Wei Xiaofen and Qu Feifei, left the team, while veteran Xie Caixia from Guangdong was lucky to stay in the 22-player list.

　　Xie Caixia, a 32-year-old, didn’t play much in the recent warm-up match of China women’s football team. However, due to Qu Feifei’s fractured fibula in her left leg, she dared not use too many small players in the team for such a large-scale event as the Olympic Games. Xie Caixia has rich experience in playing both the winger and the midfielder, so China women’s football team finally chose veteran Xie Caixia instead of Song Xiaoli.

　　Three goalkeepers were used in this 22-person roster, namely Zhang Yanru, Han Wenxia and Weng Xiaojie. It is not surprising that Wei Xiaofen, who has been playing as the fourth goalkeeper, went out. Veteran Liu Yali once again lost the chance to compete in the Olympic Games. Since Shang Ruihua took office, Liu Yali has been working hard, and she is also a versatile person valued by Shang Ruihua. However, the coaching staff finally had to give up her because of the continuous back injury. On the forward line, Lou Xiaoxu’s exit was directly caused by Ma Xiaoxu’s good performance in the game after his recent comeback.

　　Although the list of 22 people has been confirmed, the registration rules for women’s football are different from those for men’s football. The women’s football team has the right to change the list of 18 players and 4 players 24 hours before the start of the game. Moreover, the China Women’s Football Team has only announced the list of 22 players, and the final list of 18 players has not yet been finalized.

　　List of 22 women’s football players in China

　　Goalkeepers: Han Wenxia, Zhang Yanru and Weng Xiaojie.

　　Defenders: Jiang Shuai, Li Jie, Weng Xinzhi, Zhou Gaoping, Liu Huana, Yuan Fan and Kun Wang.

　　Midcourt: Gu Yasha, Wang Dandan, Bi Yan, Zhang Na, Zhang Ying, Pu Wei, Lou Jiahui and Xie Caixia.

　　Forward: Han Duan, Ma Xiaoxu, Xu Yuan and Liu Chan.

　　Men’s Basketball Team: Zhang Kai Ding Jinhui left the team.

　　Yesterday was the deadline set by the International Olympic Committee for athletes to register for the Beijing Olympic Games, and the China men’s basketball team also made layoffs. Ding Jinhui from Dongguan New Century Zhang Kai and Zhejiang Wanma became the last players to leave, while Zhang Qingpeng from Panpan, Liaoning Province and Chloe Wang from Bayi became the last two confirmed candidates.

　　As early as the Stankovic Cup, there were rumors that Zhang Kai and Ding Jinhui would leave the team. They left the team first because of their poor performance in the second half of this year’s warm-up match, and the most important reason is that there is no shortage of people inside the China men’s basketball team. After Yao Ming’s return, China men’s basketball team has Yao Ming and Wang Zhizhi in the center position, while Yi Jianlian and Du Feng in the power forward position. These people are indispensable figures in China men’s basketball team.

　　However, the China men’s basketball team is short of perimeter staff. There are already four people in two positions on the perimeter, while there are only six people in three positions on the perimeter: Zhu Fangyu, Wang Shipeng, Liu Wei, Sun Yue, Chen Jianghua and Li Nan. Chloe Wang and Zhang Qingpeng left this time are both perimeter players, which can be regarded as a supplement to the number of perimeter players. After determining the number, China men’s basketball team will compete in the Diamond Cup with a list of 12 players, and the preparations for the Olympic Games have also entered a sprint period.

　　After the team name list was confirmed, the players of China Men’s Basketball Team spontaneously held a team discussion meeting, and the whole team sat together to discuss some topics.

　　The biggest issue is the relationship between the internal and external lines, which is actually how to strengthen the tacit understanding with Yao Ming. "Before Dayao came back, we discussed how to better cooperate with Dayao." Zhu Fangyu said.

　　China men’s basketball team also discussed how to deal with the relationship between the collective and the individual, how to get out of adversity and other topics. The team has the most heated discussion, and it is also the core topic of the discussion-how to treat the grouping situation.

　　"This is the worst grouping result I can imagine." Yao Ming said, "Our opponents in the same group are very strong, but our goal will not change." In Group B, in addition to the Greek men’s basketball team and the German men’s basketball team, there are also the Spanish men’s basketball team, the American men’s basketball team and the African men’s basketball team.

　　China men’s basketball team list of 12 players.

　　Center: Yao Ming, Wang Zhizhi.

　　Power forwards: Yi Jianlian and Du Feng.

　　Forward: Wang Shipeng, Zhu Fangyu, Li Nan and Chloe Wang.

　　Defenders: Chen Jianghua, Wei Liu, Sun Yue and Zhang Qingpeng.

　　Other projects: there is no special "surprise"

　　In addition to football and men’s basketball, some lists of some sports were also unveiled in advance. However, these lists are obviously less suspenseful, belonging to "open guns", and they are also well-known points for the China delegation to compete for gold, so they failed to bring us special "surprises".

　　In track and field events, Liu Xiang and Shi Dongpeng in the men’s 110m hurdles, Huang Xiaoxiao in the women’s 400m hurdles, Zhang Wenxiu in the women’s hammer throw and Zhou Chunxiu in the women’s marathon are all unsurprising candidates.

　　In women’s tennis, China’s "Golden Flowers" are impressively listed. Zheng Jie, Li Na, Peng Shuai and YanZi take part in singles, while Zheng Jie/YanZi and Peng Shuai/Sun Tiantian play doubles.

　　As a "dream team", there is no doubt about the list of China diving team. The women’s 3m springboard guarded by Guo Jingjing and Wu Minxia is the most sure event. The candidates for the women’s 10m platform are wangxin and Chen Ruolin, the men’s 3m springboard are He Chong, Qin Kai and Wang Feng, and the men’s 10m platform is Zhou Lvxin, Lin Yue and Huo Liang.

　　Shooting is also the dominant event of the China delegation. Due to the transparency of selection and qualification, its list was published early. Tan Zongliang, Zhu Qinan, Jia Zhanbo, Du Li, Zhao Yinghui, viki and Chen Ying are all familiar names.

　　As both advantageous events, the competition in gymnastics is fierce. Now only the men’s gymnastics is clear. Due to the strong comeback in the first half of this year, Li Xiaopeng broke into the Olympic team at the last minute. Li Xiaopeng, Yang Wei, Huang Xu, Chen Yibing, Zou Kai and Xiao Qin, the three old teams and three new teams, are indeed the strongest configurations of the China men’s gymnastics team at present. In contrast, the list of women’s gymnastics teams is relatively difficult to produce, because except Cheng Fei, Jiang Yuyuan, Yang Yilin and He Kexin, there are actually seven players competing for the remaining two places.

　　The most interesting thing is that table tennis and badminton are both "still hiding half her face from us behind her guitar", and the entry list has been delayed. The only exception is the women’s singles of badminton. Because of the unstable performance of the "newcomers", Zhang Ning, a gold medalist and veteran of the Athens Olympic Games, finally played with Xie Xingfang.

　　And some slightly unpopular events are still familiar names. In boxing, Zou Shiming plays in the 48kg class, while in Taekwondo, Chen Zhong, who is over 67kg class, strives for three consecutive championships, while in the 49kg class, Wu Jingyu, the upstart, guards it. In equestrian, Huatian has been hyping for too long.

Editor: Wang Yuxi