Image source @Visual China Article 丨 Intelligent Relativity (ID: aixdlun), author 丨 Yixi On May 17, the “Guangdong Province Social Credit Regulations” was issued, which clearly prohibits the collection of natural person information such as diseases and biometrics. Earlier, Tianjin, Hangzhou, Nanjing and many other places began to legislate to strictly control facial recognition, and even required the removal of facial recognition equipment such as sales offices and properties. Since the second half of 2020, protests about the mandatory use of face recognition have become increasingly louder. This year’s CCTV March 15 party broke out that 2,353 companies across the country, including Kohler, BMW, MINISO, etc., installed millions of face recognition cameras, suspected of collecting hundreds of millions of users’ facial information without the user’s knowledge. A wave of public opinion crisis involving personal privacy issues. Artificial intelligence image recognition scenes including face recognition are the main track of the AI ​​Four Little Dragons. As early as 2014, Megvii successfully seized the opportunity of Alipay to find a technology provider for “face payment” and found the first commercial landing scene. Coincidentally, Yitu, Yuncong, and SenseTime also started from “swiping their faces” and opened up the market in the fields of security and finance. Because of their outstanding performance, they were collectively referred to as the “AI Four Dragons” in the domestic artificial intelligence field. Nowadays, the business scene of face recognition is facing the risk of rectification. In addition to the increasing resistance of policies and public opinion, the AI ​​Four Little Dragons, at the same time, are facing problems such as long-term huge losses, exodus of executives, and repeated obstacles to listing. It was also exposed to the spotlight. On May 20th, the four AI dragons are so big that they will even be on the hot list. It is not difficult to find that the four little dragons that have been surrounded by capital have fallen into the altar in the past few years, and the life of AI companies is actually not as good as before. Today, the AI ​​industry has entered the deep water zone, and how to find a more suitable path forward in the future has become the focus of the entire industry. Capital goes backward, market goes forward Since the beginning of this year, the unicorns that once vie for the “first share of artificial intelligence” have smashed their IPOs. On March 11, Yitu Technology suddenly applied for suspension of IPO. Just one day later, Megvii Technology was exposed after the Hong Kong stock IPO stranded and moved to the Science and Technology Innovation Board. Recently, Yuncong Technology’s IPO was also suspended due to “the financial information recorded in the issuance and listing application documents has passed its validity period”. SenseTime has not disclosed its listing plan, and companies such as Yunzhisheng and Hesai Technology have also terminated their listings. In the past few years, there was often a saying: The next decade is the decade of AI. In the eyes of a large number of investors, artificial intelligence is the fourth productivity revolution after steam engines, internal combustion engines and the Internet. At that time, the financing of the AI ​​track was like a competitive game, and the financing amount was refreshed over and over again. Public data shows that in 2017, the total number of domestic AI companies reached more than 600, and the financing scale of Chinese AI companies reached a peak of 148.5 billion yuan in 2018. According to the “Intelligent Theory of Relativity”, Yitu Technology has undergone 10 financings from September 2012 to June 2020. Strategic investors include Sequoia Capital China, Hillhouse Capital, etc.; SenseTime Technology November 2014 As of September 2018, it has experienced 9 financings. Investors include SoftBank Vision Fund, Hopu Investment, Silver Lake Capital, Alibaba, Temasek Temasek, IDG Capital, etc.; Yuncong Technology from April 2015 to May 2020 A total of 10 rounds of financing have been experienced. Investors include China Net Investment, Shanghai Guosheng Group, Nansha Financial Holdings, Industrial and Commercial Bank of China (5.200, -0.04, -0.76%), ZhongAn Capital, Shunwei Capital, etc.; Megvii Technology has started from 2011 From November to May 2019, there have been 7 financings. Investors include ICBC Asset Management Co., Ltd., Abu Dhabi Investment Authority, Bank of China Investment, Macquarie Capital, Alibaba, Ant Financial, Lenovo Ventures, etc. However, under high valuation and high investment, the four little dragons are far from profitable. According to the prospectus, in 2017, 2018, and the first half of 2019, the amount of cash flow from Megvii Technology’s operating activities was -150 million yuan, -720 million yuan and -680 million yuan, respectively. The prospectus disclosed by Yitu also showed a huge loss. The net loss in 2019 was 3.647 billion yuan, and the net profit in the first half of 2010 was still a loss of 1.303 billion yuan. Yuncong’s prospectus disclosed that the adjusted net loss in 2017, 2018, and 2019 were net losses of -106.3163 million yuan, -180.6752 million yuan, and -1708.0161 million yuan, respectively. In the first half of 2020, the net loss reached -286.2022 million yuan. In the financing plan, SenseTime’s debt ratio in 2019 is also as high as 102.35%. “Intelligent Relativity” sees, The slow progress of commercialization and the amazing ability to burn money has made the business models and liquidity capabilities of artificial intelligence companies such as the Four Dragons become the focus of market doubts. The long-term investment return period and high investment in the artificial intelligence industry have also been widely known. Since 2020, the number and scale of financing events have dropped significantly. According to CB Insights, the overall number of AI financing transactions in the first quarter of 2020 dropped from 542 in the previous quarter to 506, while the number of pending transactions in the third quarter of 2019 was 660. Yitu Technology recently disclosed that the financing amount was 30 million U.S. dollars invested by the Runcheng Industrial Pilot Fund in March 2020, which is less than one-sixth of the previous highest amount in the C++ round. Even SenseTime, which is known as a financing machine, has not had new capital to settle in for two years. The wave of artificial intelligence has gradually faded. It is becoming more and more difficult for AI companies to raise funds in the primary market, and after several rounds of large-scale financing, the primary market has been unable to afford a company of this size. In order to raise funds to promote business development, the four dragons have successively embarked on IPOs. road. In addition, besides capital, the market is also evolving . In the last wave of capital dividend period, AI application scenarios are not yet mature and have not been verified by the market too much. At that time, AI companies were in the stage of basic technology accumulation, and the core driving factors were teams and talents. Nowadays, the development of the AI ​​industry has entered a new stage. Only simple technical business can not bring enough room for imagination. “This year, we really have rarely looked at pure AI projects. We are more concerned about the ability of AI to integrate with industries such as finance, logistics, and medical care, how many compound talents the company has, and how deep the understanding of the industry is.” “In addition to focusing on technology and products, investors also value the competitiveness of the entire business environment, including operations, customer relations, and manufacturing. In the development of the AI ​​industry, scenarios are more important than technology.” A long-term investment in hard technology The man said to the reporter. Capital goes backward, market goes forward . The AI ​​industry has long been not limited to the research and development and implementation of the algorithm level, but has developed in many aspects such as chips, industry solutions, and ecology. In the process of technology upgrades, model upgrades, and method upgrades, a number of new AI companies will surely emerge, and of course, a number of companies will gradually become obsolete. From +AI to AI+, the industry logic has completely changed After five or six years of development, AI has now been applied in many vertical fields, with more mature fields including home furnishing, finance, transportation, and medical care. By combining with many vertical fields, artificial intelligence technology can empower the industry through two aspects: on the one hand, increase production efficiency, reduce costs and increase efficiency, that is, “+AI”; on the other hand, create new demand and growth points, that is, “AI+ “. In terms of “+AI”, whether the AI ​​subdivision track can be commercialized, similar to all 2B industries, depends on how much industrial efficiency is improved, whether it brings increased revenue, or how many pain points AI technology solves pain. In terms of commercialization, there is a very straightforward logic for deciding whether to pay: Does this AI product help it increase productivity and effectively solve a certain problem? How much cost has been saved? How much income has been improved? Therefore, unlike in the past, using a single point of technology as the direction of force, seizing a certain scenario and continuing to burn money to obtain, process, and train data is different. AI companies need to provide customers with more and more precise services, which requires the team to have The ability to combine cutting-edge technology and business logic meets the needs of companies such as reducing costs and increasing efficiency to the greatest extent. In addition, In today’s fierce homogeneity competition, companies are also required to have excellent B-end channel operation capabilities. “The current trend is to make integrated and large-scale solutions. AI is only one of the capabilities integrated.” An industry insider introduced to reporters. At present, the growth of AI companies’ valuations driven by technology alone is very limited. In the final analysis, the transformation that AI companies face is from a technical service provider to an overall solution provider. The core driving factors are gradually changing from team and algorithm technology to data and scenarios. For AI companies whose entrepreneurial teams are mainly scientists In other words, the ability to acquire customers, service capabilities, and bargaining power are all new challenges. In addition, in the view of Ma Yunlong, an associate researcher at Tongji University, AI China and Taiwan will be a major trend in the future. He believes: “AI Zhongtai integrates a variety of complex algorithms in the digital transformation of cities, improves the adaptability of the product, and is closer to the needs of users and the market.” According to “Intelligent Relativity”, AI Zhongtai is the strong point of companies such as Shangtang, Yitu, Baidu, and Alibaba. Companies do not need to have too high AI development capabilities, they can quickly empower these AI capabilities in their own enterprise systems on the basis of AI mid-stage. In terms of AI+, Baidu and Taobao have used AI to do intelligent applications around their search business. HKUST iFLYTEK is the dominant player in the voice field, and other Internet giants also use social interaction, e-commerce, online car-hailing, and information recommendation. And other business scenarios let AI technology land. For a long time, the amount of data is large and small, and it is considered to be the technical barrier that constitutes the core of AI companies, which means that Internet giants with digital capabilities will have more advantages. In addition to their own advantages in data and scenarios, digital giants in related fields will achieve breakthroughs at a lower cost, and their applications will be more refined and smooth. In the landing stage, how to enter the industry to compete with industry players and win market share is a huge challenge facing AI companies. At present, the commercialization of AI is highly concentrated. According to the “China Artificial Intelligence Industry Research Report 2020” released by iiMedia, security and finance are the top two areas with the largest market share of AI empowered real economy, accounting for 53.8% and 15.8% respectively, totaling nearly 70%. Taking Megvii Technology as an example, the prospectus shows that the urban Internet of Things business, which focuses on security, contributed 73.2% of Megvii’s revenue. However, both areas are facing fierce competition. In the field of security business, compared with the old brands such as Dahua, Yushi, Hikvision, etc., the four little dragons are hardly competitive in terms of brand, channel, and bargaining space. In addition to price factors in the security field, hardware capabilities are more important. For example, camera sensors are involved in the upstream and downstream of the industry chain, and it is very difficult to integrate well. The AI ​​four dragons can only cut in from software capabilities, and software is difficult to make a profit. It is understood that Hikvision has also built its own algorithm team, with densely packed cameras on the road outside the Hikvision Park, collecting test data by itself. In the financial field, the “AI Four Little Dragons” were eaten by giants. For example, Ant Financial released the “Dragonfly”, which is a facial payment hardware, and WeChat Pay followed by the similar product “Frog”. The algorithms are all from Ali and Tencent’s own algorithm teams. . It is worth noting that although the Four Little Dragons also have a layout in terms of hardware, the competition they face in the security and financial fields is still mainly competition in visual image-related businesses. The previous four little dragons have always kept AI services at a level that is relatively easy to implement, such as voice, image recognition, etc. . However, after two years of development, due to factors such as algorithm bottlenecks, homogenization, difficulty in landing scenarios, and policies, the computer vision field lacks stamina. As early as 2019, after an AI technology giant resigned from an AI startup company, he said: “A few years ago, a set of facial recognition algorithms sold for tens of millions, but now it’s only worth 400,000 yuan.” After the giant’s exit, the image The threshold of recognition algorithms is getting lower and lower, and face recognition algorithms are not worth anymore. “At present, except for some security vision companies with G-end resources in China, vision companies are basically unprofitable.” Chen Pengren, investment director of Qingtong Capital, said in an interview with the media before. At present, the fruits of the AI ​​shallow water area have been picked, and facing a larger deep water area, AI companies are actively looking for more commercial scenarios, tapping deeper industry needs, and achieving self-made blood through differentiated development paths. Just as Megvii CEO Yin Qi said, after an early outbreak of five or six years, the AI ​​industry has now entered a “deep water zone”, and AI companies that do not bring real value will be eliminated. In the deep-water area where the AI ​​industry has landed, whoever can first realize the closed loop of value and the industry landed will have the right to survive, and the market left them with little time left. How will the unicorns evolve? With changes in the market environment and changes in models and strategies, the “AI Four Dragons” are changing from a narrowly defined face recognition company to a more comprehensive company. “Intelligent Relativity” understands that Megvii cuts into the robot AIoT field from a single point of computer vision, and regards logistics business as a future growth point. In terms of specific business, it is divided into personal Internet of things, urban Internet of things and supply chain Internet of things. For example, three hardware systems of cameras, edge servers, and cloud servers have been established for the urban Internet of Things Megvii, and more than 30 cameras have been introduced. In the supply chain Internet of Things, a variety of automation equipment has been developed to perform logistics and warehousing tasks. Last year, Megvii released 7 AI+ intelligent hardware products suitable for logistics and warehousing, and announced the launch of Hetu 2.0, a software intelligent robot operating system. It is understood that Megvii’s global flexible clothing smart warehouse, which is under construction, can connect and dispatch nearly 4,000 smart logistics equipment in 10 categories, relying on the Hetu system. Family Portrait of Megvii Robot Products Similar to Megvii, Yitu Technology has also strengthened the integration of software and hardware. Since 2020, computing power has replaced the original visual positioning and transformed algorithm + chip manufacturers. Last year, Yitu Technology released the search chip, and subsequently released the rough series of servers and cutting-edge edge computing devices based on the search chip. In its prospectus, Yitu Technology not only mentioned its competitors Nvidia and Cambrian but also Said that a large part of the funds raised in the listing is also used for the research and development of chip related products. It is understood that the current computing power support of computer vision companies mainly depends on Nvidia’s high-performance GPU series chips, and AI company’s self-developed chips can not only reduce costs, but also optimize performance for application scenarios, better meet customer needs, and accelerate The promotion speed of AI products. In fact, core making is the common choice of many AI companies. Shangtang, Cambrian, and iFLYTEK have all developed chips through self-research or external cooperation. Yunzhisheng, Yuntian Lifei, and Spitz also regard AI chips as the core element to enhance future competitiveness. Comparison of Yitu’s gross profit margin level and comparable listed companies Judging from the prospectus, self-developed chips have brought new growth momentum to Yitu. In the first half of 2020, Yitu’s software and hardware portfolio business accounted for 60.78% of revenue, while in 2017, the software and hardware portfolio revenue accounted for only 10.32%, and more than half of its revenue relied on software business. The core manufacturing has also increased Yitu’s overall gross profit margin, and the overall gross profit margin of its main business has risen to 70.99%. Yuncong Technology integrates the core technology in the human-machine collaborative operating system. On the one hand, it includes a variety of human-computer collaborative application products and overall operating systems that are provided according to customer needs in different application scenarios, serving customers to improve the efficiency of single-point business. And the overall business upgrade; on the other hand, it also includes the general service platform “Qingzhou Platform”. According to the prospectus, the “Qingzhou Platform” integrates self-developed AI technology and strategic customer service experience, integrates automated algorithm training, open source standard application solutions and other general capability models, scenario applications, and industry applications. Quantitative universal service platform. It can be seen from the prospectus that after four to five years of precipitation, the human-machine collaborative operating system has contributed to an increasing proportion of revenue. In the first half of 2020, it has been close to 50%. At the same time, it also drives the growth of gross profit margin, the latest data has reached 53%. However, unlike other companies’ deep cultivation of advantageous scenarios and polishing of their main business, SenseTime proposes a “1+1+X” platform strategy, where 1 stands for R&D and technology industrialization, and X stands for empowering all industries. SenseTime has a presence in multiple vertical fields, and its business covers smart phones, Internet entertainment, automobiles, smart cities, education, healthcare, finance, real estate and other industries. Some media have reported that SenseTime has undergone four changes in its organizational structure since its establishment. In the latest adjustment, the business is divided into smart city, mobile, business insight and innovation. In addition, SenseTime has positioned itself as an “AI factory”, and in order to support the continuous operation of the entire “factory”, SenseTime has invested about 5 billion yuan in the construction of a supercomputing center and open source core algorithms. With the introduction of AI gradually entering the deep water area, the AI ​​Four Little Dragons have fully expanded from single-point business to multi-threaded business, and have moved towards the “three forks” in terms of business strategy and play style. Nowadays, most artificial intelligence companies are facing similar difficulties as the Four Little Dragons, such as long commercial launch cycles, fierce competition, pressure on cash flow, dependence on large customers, data crisis, and so on. After removing the mythological aura, AI has a long way to go.

I have a chance to chat with Prof. Dr. Bui Cong Hien , former lecturer of Biology Department, University of Natural Sciences, VNU, leading entomologist in Vietnam about 10 years ago. At that time, he was retired and was dreaming with his friends to open a gallery of paintings made from insects. At the age of 80, Prof. Dr. Bui Cong Hien is still working hard. After a few years, I had the opportunity again follow GS.TS. Bui Cong Hien visit the artificial butterfly farming model in Ba Vi (Hanoi) made by himself. During those meetings, he told me about the insect world, about the benefits of insects and his predestined relationship with insects. He said, when he was still a student, he studied at the Department of Physics, Hanoi University (now Hanoi National University). He said that at that time his knowledge of insects was very little. Most of the time the teacher assigns a topic to do it. he did “Study on the phototropism of insects”, “Biology and ecology of the rice weevil (Sitophilus oryzae)” all suggested by the instructors. “Later, when I was retained as a teaching staff, I was assigned to the insect group of the Department of Invertebrates, Department of Biology. When going to work as a PhD student in the GDR, following the advice of Prof. Dao Van Tien, I chose the direction of research on Insect Physiology, a very bony research direction. Maybe I have a predestined relationship with insects, so insects chose me,” he wittily shared. He said, from that fate, he focused on researching insects in many directions such as insect pests, applied entomology, pheromones of insects, insects in Vietnam and prevention of harmful insects. , insect resources in Vietnam and valuable insects… From these studies, the benefits of insects he called “gold mines”. He affirmed that with more than 1 million species and living in all habitats, there is no creature that is attached to humans, being both “enemies” and “friends” like insects. Although small, the insect world is both “romantic” and “realistic”. Insects can kill people, but they also create jobs that feed millions. He asked the question: if insects were not present on the planet, how would humans live when the earth was filled with dead animals and plants; when the fruit is not pollinated… Sad because Vietnam is wasting gold mines Prof. Dr. Bui Cong Hien said, when studying insects, he discovered that many people call insects “insects” implying that insects are harmful species. Insects are “guilty” to humans. But that makes up less than 1% of the more than 1 million species. In fact, we are “a worm that upsets the whole pot of insect soup”. Prof. Dr. Bui Cong Hien said, we don’t know how to mine gold from insects. He said that insects bring 10 benefits to nature and 15 benefits to humans such as making food, beautifying, improving soil, pollinating plants… Especially Vietnam is a country with high biodiversity, with a large number of insects. However, we do not yet know how to mine gold from insects. Currently, according to GS.TS. Bui Cong Hien, in our country, the conservation and exploitation of insects, especially those in the wild, are rarely studied. “I had the opportunity to go through the market in Dien Bien, and saw the sale of worms and bees… I feel so sorry. Because people spontaneously exploiting insects have been both “victims” of poverty and backwardness, and “criminals” of biodiversity destruction”, he confided. “Why not research and help them breed these objects into farms to harvest and process valuable products like some countries have done. Why in many countries there are companies trading insects, but in Vietnam, they only sell at the market like hundreds of years ago. Earlier this year, the EU allowed the farming of mealworms (Tenebrio molitor) as food for humans, while in Vietnam only selling mealworms for ornamental birds,” he added. Plans at the age of 80 Currently, Prof. Dr. Bui Cong Hien has turned 80. However, he still cherishes many plans. The gallery made from insects in the past could not open for many reasons, but now he is still determined to do it. Nutritious nuggets from insects that he used to make successfully in the past, with recipes and designs available, he did not want to give up halfway. “I raised the issue with the Department of Culture, Tourism and Sports and the Bac Ninh Museum. In my opinion, besides traditional Dong Ho paintings, there should be Dong Ho paintings from butterfly wings to enrich folk paintings. Now I’m waiting for funding,” he revealed. The famous entomologist also said: Currently, he has researched and completed the process and technology of insect breeding, and the technology of making nutritious nuggets from insects. What he wishes is that there are businesses and entrepreneurs who realize the value of supporting insects, or invest in building a project to breed and exploit a few specific insect species. He said he is willing to transfer the technology. Invite readers to watch the video: Dangers of using weight loss foods online. Source: VTV24.

Trees were planted and cared for by officers and soldiers of Tay A Da Island (Spratly archipelago) under the model “For the green Truong Sa” which was established and put into operation in June 2015. (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA) The storm tree is still green amidst the sun and wind of the sea. (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA) A layer of young eagles grows under the canopy of a square tree on Da Tay A Island (Spratly archipelago). (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA) The square eagle tree and other trees are taken care of by officers and soldiers of Nam Yet island to create a landscape right at the office. (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA) Pangasius flowers bloom in the summer, resulting in a specialty called “sea grapes” at the end of the season, a symbol of the enduring vegetation of the Spratly archipelago. (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA) Three maple flowers bloom in the middle of May sunshine on the Truong Sa archipelago. (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA) Square eagle flower – symbol of green vitality, intense longevity of flora on Truong Sa archipelago. (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA) Trees on Sinh Ton island (Spratly archipelago) have been present since the island’s existence and have grown well for shade, softening the sweltering summer day amidst the sea. (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA) Green vegetables are covered by the soldiers of Da Nam Island and Truong Sa archipelago with closed cages so that the plants can grow well in the hot summer sun. (Photo: Phan Sau-Sy Tuyen-Thang Trung/VNA)

The seeds are prepared. According to Ms. Trieu Thi Tiep in 2 Tuc village, Phuc Loi commune, Luc Yen district, Yen Bai province: By the day of good luck, people must prepare all kinds of seeds such as maize, rice, gourd, pumpkin, sesame, peanuts, beans, beans … and these seeds are put into the pan to cook so that the pests harmful to the plant will be eliminated. “Since ancient times, the Red Dao people have had a strict etiquette. Waking days often have to get up earlier than usual and prepare all the seeds that the family often sow in a pan to roast with the meaning of killing insects while still in the egg so that there is no muscle. The association broke out, causing damage to plants ”, – Ms. Trieu Thi Tiep said. After being roasted, the seeds can be eaten and spread to vegetable gardens and rice fields to see off pests. The hand spread the seeds while saying, “Today is a good day, the family has fully prepared the seeds and also done the eradication of pests. So I would like to send off the pests that are not harmful to the family plant ”. Get rid of pests by roasting the seeds. After completing this work, the new woman and her family have breakfast before going to farm work. The hard days are not the same as those of the Yen Bai Red Dao such as: abstaining from the god of thunder, the god of the wind or abstaining from tigers …, people are not allowed to do farm work, but only rest at home. , visit friends, neighbors, and especially do not make any loud noises. On the contrary, after completing the strict procedures, people still continue to do their daily jobs. “The grinds are not strict, like the great taboo days like the god of thunder, the god of the wind, or the day of abstaining from the tiger. On a good day, the family still goes to work normally, but before going to work, it is necessary to eliminate pests, that is, to roast all the seeds that the family has planted. This practice is still practiced by family and neighbors every year, ”added Thieu Thi Sinh, Lung Ha Hamlet, Phuc Loi Commune, Luc Yen District, Yen Bai Province. Nowadays, science and technology have been more developed, Yen Bai Red Dao people also know how to apply technical advances in preventing harmful pests and diseases, increasing crop productivity and quality. However, the strict tradition is still promoted by the Dao people here, such as reminding their children and grandchildren about a way to protect plants against the harm of their fellow pests from ancient times./.

Living in a riverside village in Van Giang district (Hung Yen), Ms. Nguyen Thi Thuy said, the pretend is a specialty only available in the Red River. Their larvae live in water, only surface once a year to molt and then fly to the surface to lay eggs. Close-up of the child pretending to be outside the Red River. (Photo: Van Thanh). According to Ms. Thuy, when she was a child, many children appeared pretending to be, but suddenly about 20 years they disappeared, causing nostalgia for generations of fishing villages. However, about 3 years ago, pretending to appear many times made the people of the fishing village excited to come out and get together to go out and pretend from 3am. “I pretend to only appear once a year around February to March of the lunar calendar and only live about 2 hours. To get rid of it, most of my family had to stay up all night to see if the next day’s situation would pretend or not. If there is, by about 4 am, the pretense will start to float, and the river will be completely flown by about 6am, ”Ms. Thuy said. The child pretends to be a specialty only available in the Red River, which can be purchased at quite high prices. On the day of pretending to appear, dozens of fishing boats with nets attached to the nose of the boat ran along the river. When it is clear, it is also the end of the fake harvest. Because people were brought up from the riverbank, people gathered and bought them all. At the beginning of the crop, the price was high, about 500,000 VND / kg, every day when it was picked up, it was about 300,000 VND / kg. “On average, my family can salvage about 3-5 kg ​​a day, but there is a record day that my house can salvage nearly 40 kg. Bring it to the market, have not yet sold out all. Because it only appears a few days / month, it is necessary to be able to watch it to avoid the end of the season ”, Ms. Thuy said. Nearly 20 years of “losing track”, about 3 years ago, the pretend started to appear again. As the owner of a famous restaurant in Ngoc Thuy, Long Bien (Hanoi), but Van Thanh still goes out and pretends because this is an insect that has attached to the childhood of riverside children like him. At the same time, he used pretend to cook into dishes to serve guests to eat at his restaurant. In order to catch the pretense, fishermen like Thanh had to prepare from 3am, use a fixed net at the nose of the boat and pick them up because they only appeared from 4-6am and disappeared. According to Thanh, there are not every place where there are pretensions, but only at the confluence of the river where there is a lot of soil for them to nest. “Usually it takes a lot of attention to be able to watch the right day of pretending to molt because only 1-2 times a month. After 2 molting, they lay eggs and then die. Eggs hatch into larvae and return to the river bed waiting for the day to be molested on the surface “, Mr. Thanh said. After being processed, the baby becomes a specialty, with the price up to a million VND / kg. After picking up, Mr. Thanh processed many dishes to serve diners such as pretending to braise fish, pretend soup, pretending to roast honey leaves, and pretending to fry eggs … If he can save a lot, he proceeds to preserve it. separate to be used all year. “From the beginning of the crop up to now I have picked up 2 times, each time about 10-20kg. If selling fresh, it is only about 500,000 VND / kg but processed, each kilo can make 4 plates with the price from 200-300,000 VND / plate. So, each kilo of pretense will cost about 1 million dong ”, Mr. Thanh shared. I pretended to be a phytoplankton, after molting, only lived a few hours on the water. According to the book “Ten thousand questions of why”, I pretend to belong to the set of Ephemeral Wings, a set belonging to a group of Palaeoptera, together with the order of Dragonflies, whose scientific name is Ephemeroptera. They are twofold. After the second time, they only have one pair of wings and then live for only a few hours. The longest lifespan of pretending is not more than a week. The larvae of the child pretend to live in the water, after rolling a few times to become the same. When it becomes a coincidence, its body is soft, light emitting, the two antennae on the head are like a dagger, at the end of the abdomen grows 3 tail feathers. In the evening the children pretend to gather, fly over the water to perform mating. After the sex is finished, pretend the female spawns the eggs in the water. The vast majority of them to the next day “deadlock”.

Follow-up tests showed that the baby had a severe blood clotting disorder, a large decrease in platelets consistent with the initial judgment. Doctors quickly infused 4 bottles of anti-green snake venom serum to the baby and closely monitored clinical signs.

Be careful when young children are bitten by insects or snakes. Photo BVCC

After more than 24 hours of follow-up, C’s hand was not swollen more, no bleeding, but the disorder of blood clotting had not improved, he was given 4 more vials of anti-green snake venom. The results showed that after 6 hours of second serum transfusion, the baby’s hemostasis tests gradually returned to normal, no bleeding on the mucous membranes, and better eating and drinking.

According to the family, the baby woke up and woke up and complained of pain while sleeping. On examination, family members found that the baby had a slight abrasion and swelling in the 2 knuckles of the middle finger of the right hand and thought it was not serious, after 7 hours of home observation, the bite was swollen, spreading the whole hand up to the forearm. being taken to private medical facilities for treatment with only temporary relief of pain and swelling.

On the afternoon of April 9, 2021, when the baby was taken to the hospital, his hand was swollen swollen to the arm area, the middle finger was more painful.

How to recognize and first aid when bitten by insects or snakes:

For Insect bites (bites): Be aware of mild soreness at the site of the bite, the sting, and swelling around the bite. If severe, hives will be generalized, shortness of breath, anaphylaxis, cold hands and feet, mild pulse, difficult to catch, hematuria, low urination, kidney failure usually occurs in the first days.

First aid way:

– Most bee stings leave a sting and bag of venom in the sting on the victim’s skin, except for wasps. It is best to pry the syringe out by gently gently squeezing, using tweezers, avoid squeezing by hand as this can cause the venom to spread.

– Clean the affected area with soap and warm water

Apply a cold compress to the bite to reduce pain and swelling

– Take the victim to a medical facility if: The victim complained of fatigue, cold hands and feet; Red urine, little urine. Was stung on 10 marks by wasp.

For snakebites: Recognize that it is necessary to quickly observe the bite, the following signs indicate that the snake bite was much swollen, much pain at the bite site. The bite has two marks of venom that can be a snake with local signs such as swelling, bruising, necrosis and blistering of the skin filled with fluid; disorders of blood clotting: Hemorrhage of the skin, mucous membranes. For the cobra, there are few signs of systemic dizziness, nausea, shortness of breath, and weakness in limbs.

First aid way: When bitten by a snake, even a snake is identified should be closely monitored as a poisonous snake bite, at least for the first 6 hours. In particular, when bitten by a poisonous snake or suspected of being bitten by a poisonous snake, first aid should be taken immediately and promptly bring the victim to a medical facility.

Give first aid by lying down, place the bitten place lower than the heart to limit venom absorption. Clean the wound with soap and water. Cover the bite with a cool compress to reduce pain and swelling. Quickly take the victim to a medical facility where it can determine the type of snake bite and inject an appropriate anti-venom serum.