On December 30, 2022, the 38th meeting of the 13th the NPC Standing Committee reviewed and approved the Amendment to the Stockholm Convention on Persistent Organic Pollutants to include polychlorinated naphthalenes and the Amendment to the Stockholm Convention on Persistent Organic Pollutants to include short-chain chlorinated paraffins and other three persistent organic pollutants (hereinafter referred to as the Amendment). The Amendment came into force for China on June 6, 2023.

　　The Amendment eliminated or restricted five kinds of persistent organic pollutants, namely hexachlorobutadiene, polychlorinated naphthalenes, pentachlorophenol and its salts and esters, decabromodiphenyl ether and short-chain chlorinated paraffins. In combination with the relevant management regulations of China, the specific matters of limiting and controlling the above five kinds of persistent organic pollutants are announced as follows:

　　1. It is forbidden to produce, use, import and export hexachlorobutadiene, polychlorinated naphthalenes, pentachlorophenol and its salts and esters.

　　2. It is forbidden to produce, use, import and export decabromodiphenyl ether (except for the following purposes).

　　(1) Textile products with flame retardant characteristics (excluding clothing and toys);

　　(2) Additives for plastic casings and parts used for household heating appliances, irons, fans and immersion heaters, which contain or directly contact with electrical parts, or need to comply with flame retardant standards, and the density is less than 10% by weight of the parts;

　　(3) Polyurethane foam used for building insulation;

　　The exemption period of the above three types of uses will end on December 31, 2023.

　　Three, prohibit the production, use, import and export of short-chain chlorinated paraffin (except for the following purposes).

　　(1) Additives used in the production of conveyor belts in natural and synthetic rubber industries;

　　(two) spare parts for rubber conveyor belts used in mining and forestry;

　　(3) leather industry, especially fatliquoring leather;

　　(4) Lubricating oil additives, especially used in automobiles, generators and engines of wind energy facilities, as well as oil and gas exploration and drilling and oil refineries that produce diesel oil;

　　(5) Outdoor decorative lamps;

　　(6) Waterproof and flame-retardant paints;

　　(7) Adhesives;

　　(8) Metal processing;

　　(nine) the second plasticizer of flexible PVC (but not used in the processing of toys and children’s products);

　　The exemption period of the above nine types of uses will end on December 31, 2023.

　　4. Enterprises, institutions and other producers and operators that discharge hexachlorobutadiene and polychlorinated naphthalenes shall take effective measures to effectively reduce emissions or eliminate emission sources. Encourage the development and application of alternative technologies to prevent the generation and emission of hexachlorobutadiene and polychloronaphthalene.

　　5. Unless otherwise specified, chemicals used for laboratory-scale research or as reference standards, and chemicals appearing as unintentional trace pollutants in products and articles, do not apply to the above requirements on prohibiting or restricting production, use and import and export.

　　Six, all levels of ecological environment, industry and information technology, housing and urban construction, agriculture and rural areas, commerce, emergency management, market supervision and management, disease prevention and control departments and customs, should be in accordance with the provisions of relevant state laws and regulations, strengthen the supervision and management of the production, use, import and export of the above five kinds of persistent organic pollutants. Once violations of the announcement are found, they will be severely punished according to law.

　　Seven, this announcement shall come into force as of June 6, 2023.

　　It is hereby announced.

　　Annex: List of Persistent Organic Pollutants Restricted by the Amendment

　　Ministry of Ecology and Environment

　　Ministry of Foreign Affairs

　　Ministry of Science and Technology

　　Ministry of Industry and Information Technology

　　Ministry of Housing and Urban-Rural Development

　　Ministry of Agriculture and Rural Affairs

　　Ministry of Commerce

　　Ministry of Emergency Management

　　General Administration of Customs

　　State Administration for Market Regulation

　　National Bureau of Disease Control and Prevention

　　June 6, 2023

　　Issued by the General Office of the Ministry of Ecology and Environment on June 6, 2023

　

　　attachment

　　List of Persistent Organic Pollutants Restricted by the Amendment

　　Note: SCCPs refer to chain length C.₁₀To c₁₃And the chlorine content exceeds 48% by weight, and its concentration in the mixture is greater than or equal to 1% by weight.

　　interpretResponsible comrades of the Solid Waste and Chemicals Department of the Ministry of Ecology and Environment answered reporters’ questions on the Announcement on Environmental Risk Control Requirements for Five Kinds of Persistent Organic Pollutants, such as Polychlorinated Naphthalenes.

　　Kunming, August 26 (Xinhua) The reporter learned from the Forest Public Security Bureau of Jingdong County, Yunnan Province that a national second-class protected wild animal, the Chinese gazelle, recently broke into the homes of local farmers, and the farmers called the forest public security bureau for help.

　　On the 22nd, a "monster" suddenly broke into the home of a villager in Wenjing Town, Jingdong County. Its horns were like antlers, the head of a sheep, the hoof was like a cow’s hoof, and the tail was like a donkey’s tail, which was a realistic version of the "four unlike".

　　It strayed into the pigsty after a while in the yard. The villagers quickly shut it up and called the local forest public security bureau for help the next day.

　　The police of the Forest Public Security Bureau of Jingdong County rushed to the villagers’ homes. After careful identification, it was confirmed that the monster that broke into the farmhouse was named Chinese gazelle, which belongs to the national second-class protected wild animal. The police analyzed that it may be due to the heavy rain in the local area. After walking out of the nearby forest, the Chinese gazelle mistakenly broke into the villagers’ homes.

　　It is understood that the Chinese gazelle, also known as the Ming-bristle sheep, belongs to the family Bovidae and is a typical forest-dwelling animal. It is one of the typical animals in the tropical and subtropical regions of southeast Asia, and mainly lives in mixed coniferous and broadleaved forests, coniferous forests or rocky miscellaneous shrub forests at an altitude of 1,000-4,400 meters.

　　After careful examination, the police did not find that this Chinese gazelle was injured and aggressive, so it was judged that it had the ability to survive in the wild and was suitable for being released into nature. Subsequently, the police took this Chinese gazelle to a suitable location in the wild and released it to nature. (Miao Chao Zhou Wei)

Text | Node Finance Six Gold

The listing of Netease Cloud Music caused an uproar in the market, and many people denied this "loss-making business" almost at the first time.

Some people think that it has lost 7 billion in the past three years and still holds a valuation of nearly 50 billion, which is not worth it at all.

Some people think that a company with a negative gross profit margin dares to go public?

Others think that this is another sentimental listing, which is really too weak!

These voices are all reasonable, but they are not quite right when they are placed on Netease Cloud Music.

　Do you think a grid of electricity is weak?

Judging from the "birthday" of Netease Cloud Music, it is definitely a "sweeping monk".

In April 2013, Netease Cloud Music was launched, and people said that Netease Cloud Music was "willing to be cannon fodder".

Because the predecessor of Baidu Music Qianqian Jingting was established in 2003; Cool dog music was founded in 2004; QQ Music was founded in 2005; Kuwo Music and Xiami Music were established in 2006; Tiantianyingmei was founded in 2008 …

When Netease Cloud Music entered the market, cool dogs and QQ music were already big names, and shrimp was not weak. But in this crack, Netease Cloud Music still made 100 million users in two years; Made 200 million users in 3 years; Three years after its launch, Netease Cloud Music also killed Xiami Music, Everyday Music, Douban Music (FM), Domi Music, Baidu Music and Kuwo Music, ranking third in the music category, with only QQ Music and Cool Dog ahead.

Why? Because Netease has seized the dividend of the mobile Internet era-socialization. During the cold start, Netease Cloud Music started a function of importing songs and downloading them for free, which attracted a large number of users of Douban FM and Shrimp at a very low cost.

From the beginning, Netease Cloud Music didn’t intend to be just a "quiet" music player. Instead, we let go of the right to comment on every song, album, song list and mv, giving users a lot of room to play, listening to songs and writing comments, a simple community function, which has captured users.

If we want to evaluate the development of Netease Cloud Music, its success in music APP is just like Pinduoduo’s surprise attack on Taobao.

Although I caught a late episode, I gained a lot. However, late episodes certainly have shortcomings. From the beginning, Netease Cloud Music did not seem to pay too much attention to the importance of "copyright" for itself.

But at that time, the music copyright market was already divided into three parts:

Source: Online public information.

Moreover, compared with Netease Cloud Music, other online players and copyright distribution; There are artist brokers, performance activities and integrated marketing offline, all of which are not just music.

Tencent Music is even richer in the acquisition of copyright. Before Netease Cloud Music reacted, Tencent bought almost all the music copyrights in the world. For example, Tencent is the exclusive agent of Warner, Universal and Sony. There are also the agency rights of companies such as Emperor, Fumao and Jewell.

When Tencent Music was interviewed by the media, it was evenTo say: "We don’t want to monopolize, but they can’t afford it", we can see how strong Tencent’s dominance is.

However, I never expected that Baidu Music had disappeared a few years later, and Ali had closed the shrimp bet.Netease cloud. There are only two forces in the music market, one is Tencent Music, and the other is Netease Cloud.

Although the disparity in strength is relatively large, Netease Cloud actually filled the audience with a grid of electricity like Duanfei in the biography of Zhen Huan.

What’s more, due to the plundering of users’ time by short videos, Tencent Music had 615 million monthly users in the first quarter of 2021, down 6.4% year-on-year. Since last year, the monthly activities of Tencent Music have been declining.

Source: Tencent Music Financial Report

In contrast, from 2018 to 2020, the monthly users of online music services of Netease Cloud Music were 105 million, 147 million and 181 million respectively, which also showed a continuous growth trend, and the compound annual growth rate was 31%; In addition, the number of online music paying users is also rising, reaching 4.2 million, 8.63 million and 16 million respectively, with a compound annual growth rate of 95%.

So if you want to say that Netease Cloud Music is not competitive, then someone will definitely not agree.

　Why did Ali and Baidu bet on a company with negative gross profit margin?

The online music market in China is almost the one with the highest "monopoly" of Tencent except WeChat in the social field. Since Tencent "wooed Cool Dog" and "Cool Me", no one can shake the position of the market leader. This is not to blame Tencent Music. It acted too early and did not give others a chance to surpass it.

There are still fast hand vibrato in the short video field; There are Taobao, JD.COM and Pinduoduo in the field of e-commerce; Iqiyi and Tencent video in the field of long video (film and television drama).

Netease cloud music is preserved like a "kindling", and its strategic shareholders includeAlibabaAnd Baidu, Ding Lei personally served as executive director and CEO. In addition, when the shrimp was shut down at the beginning of this year, Netease Cloud also inherited a large amount of "legacy" of shrimp.

It can be seen that on the music track, the big brothers attach importance to Netease Cloud.

Of course, the bosses can see that Netease Cloud Music does not make money. Supporting it is definitely not just about feelings, mainly because Netease Cloud Music and Tencent Music are still very different in essence.

From the perspective of revenue composition, Netease Cloud Music once paid more attention to online music services. In 2018, the revenue of this sector reached 1.026 billion, accounting for 89.4% of the total revenue. Social entertainment services and other businesses only contributed 122 million yuan in revenue, accounting for a very small proportion of the total revenue. This shows that Netease Cloud Music was still a "teenager with a musical dream" three years ago.

Source: Netease Cloud Music Prospectus

The social entertainment and other income of Tencent Music has always accounted for about 70-80% of the revenue, and the contribution of online music services is only 20-30%. Focus: Tencent Music has made a profit.

In order to increase income, Netease Cloud has also begun to increase the income of social entertainment services and other businesses, and speaking people’s words is to rely on rewards.

Rewarding is always the most effective way to generate income on the Internet. By 2019, the income of Netease Cloud Music Social Entertainment Service and other parts soared by 343.44%, reaching 541 million yuan; In 2020, social entertainment services will once again increase this part of revenue to 2.273 billion yuan with a growth rate of 320.15%, and the proportion of revenue will increase to 46.4%.

At this point, the revenue structure of Netease Cloud Music is gradually balanced in the eyes of capital.

In addition, in 2020, the monthly ARPPU (income per paying user) of Netease Cloud Music in the social entertainment field reached 573.8 yuan, which can be described as "high and scary", but in the same period, the amount of its online music service was only 8.4 yuan, with a gap of nearly 70 times (it seems that making music really doesn’t make money), and the monthly ARPPU of Tencent Music.It is 141.1 yuan.

In other words, the value of a paying user watching live broadcast on Netease Cloud Music is equal to the value of four paying users of Tencent Music, which is the reason why the big brothers are optimistic about the momentum of Netease Cloud Music.

The brilliance of Netease Cloud Music is once again reflected. Who said that the community is useless? Its community stickiness is easy to have a heavy effect in rewarding, while Tencent music must be accumulated through time.

Since its establishment, Netease Cloud Music has received three rounds of financing:

　Source: Online public information.

Among them, in April 2017, it happened to be the day when Netease Cloud Music broke through 300 million users, and accessed Mango and SMG to obtain some pan-entertainment copyrights; In October 2018, it happened to be the moment when Baidu was in all in AI and allowed small speakers to grab the market independently. After joining Baidu, Netease Cloud could get the coveted Taihe copyright.

Here, let’s take a look at Taihe Music Group, which is the "music copyright dynasty" in mainland China besides the big three, Fumao and Emperor. Taihe owns a company called ocean butterflies, and Vae, the big three QQ music company, has joined ocean butterflies for more than 10 years. The elephant intangible music, which is a partnership between Silence Wang and Xu Liang, is also distributed by ocean butterflies in the mainland. Boy, I didn’t expect the big three QQ music companies to become half Netease cloud music people.

In September 2019, Ali won the koala and Netease Cloud Music, and the same year was also the moment when Netease Cloud ARPPU broke out.

Judging from the time nodes of these investments, Netease Cloud really bears the "music renaissance" plan of Ali and Baidu.

　If you want to make money, don’t be a second-hand dealer.

Even Baidu and Ali are desperate for blood transfusion. In terms of copyright, Netease Cloud Music is still in a weak position.

There was such a hot comment in the comment area of Netease Cloud Music, which impressed the author deeply: "I like this community very much. There are touching comments, song lists with personalized recommendations, and bosses full of ghosts, but I finally turned on QQ music because … I want to listen to songs."

Netease Cloud Music has a very high user viscosity and feelings, and the other has a very high resource library and copyright, so the two sides are locked in a fight for users.

At first, the National Copyright Administration seemed to want to give Netease Cloud Music a chance. In October 2015, the National Copyright Administration promoted the strategic cooperation between Netease and Tencent, and QQ Music granted 1.5 million music copyrights to Netease Cloud Music.

However, these 1.5 million songs did not bring reconciliation, but made the record companies in the copyright war suddenly have the right to speak, and the copyright fees also rose, and the online music platform had to fall into an evil.Sexual cycle: buy copyright to attract users → get user traffic and membership benefits → buy copyright again → suck traffic again.

In essenceGenerally speaking, this cycle is not much different from the "second-hand peddler" who pours watermelons at the head of the village, and the right to speak is not in his own hands. The copyright fee is also a "big killer" that has always caused Netease Cloud’s gross profit margin to be negative and lost 7 billion yuan in the past three years. If Netease Cloud wants to make money in music, there is only one way to go-to be the "father" of the record company.

The position of the online music platform in the music market now is equivalent to the ancient "video store", but the video store at least has bargaining space for purchasing goods, but the music platform does not. Therefore, only by getting involved in music production and disintermediation can the music copyright be directly in your own hands and reduce the commercial pressure.

In terms of user quality, Netease Cloud Music should have a lot of music consumption potential, because it currently has 181 million people a month, 89% of whom were born in 1990 and later, and it has Netease’s social genes and a strong social atmosphere.

On the production side of music, the platform can help the pricing and distribution of music copyright, and the reference information is divided into the author’s mode, which adopts the guaranteed+divided mode; On the sales side, the music platform can also sell music copyrights or distribute and underwrite music, such as accessing advertisements, pre-installing mobile phone terminals, smart speakers, smart cars, providing music for short videos, games and other companies, etc. This is the direction for music to make money.

Although Netease Cloud has begun to take this road, it is a long way to cultivate a Jay Chou who can take away tens of millions of users among its original musicians, and it depends on luck. After all, it took decades for the Chinese music scene to produce a Jay Chou.

Of course, if this road goes well, the future music platform will not have to bear the pressure of high copyright fees, and at the same time it will be able to share the cake in the music copyright market. Independent musicians are also expected to earn the dividend of paying for listening to songs, and the entire music industry chain will be boosted.

　Netease Cloud lost Jay Chou, but Netease Cloud "Jay Chou per capita".

After losing the copyright, Netease Cloud Music can make money for music projects by cultivating independent musicians and community culture, which can achieve the effect of "Netease Cloud is Jay Chou per capita", which may be its best result on the music road.

But Netease Cloud Music is still a tangled body in the eyes of many users.

What do users hate most? I hate you talking about money with him, especially users in minority communities, such as Douban, and Netease Cloud Music, which has a seven-point ideal and three-point business. Users who don’t hate you talking about money with it will stare at how you spend money. For example, some users vomit: "Netease Cloud Music does H5 to spread every day. Isn’t it good to buy two more songs with that money?"

Therefore, Netease Cloud Music should balance the user’s experience and the crux before the money-making project, so as to prevent users from losing because they feel that Netease Cloud Music "lost its original heart", otherwise, not to mention the Jay Chou per capita, even the effect of Pangmailang per capita will not be realized, after all, the community is still very pure.

In addition, for Tencent Music, which is listed on the US stock market, the highest price of Netease Cloud listed on the Hong Kong stock market is as high as HK$ 330, while the current share price of Tencent Music is only a dozen dollars. In the music market, is "Jay Chou per capita" overvalued? Or is owning Jay Chou undervalued? Let investors vote.

The original Singularity Cake Singularity Network is included in the collection # 50 Sports.

* For medical professionals only.

In addition to improving body muscle shape, exercise is more an effective health intervention, which is related to the reduction of the risk of chronic metabolic diseases such as obesity, diabetes and cardiovascular diseases.

However, it is easy to say that "exercise is good for physical and mental health", but it is difficult to explain the mechanism. There are still many unsolved mechanisms of exercise on systemic metabolic health. For example, a recent study shows that, but researchers have not directly proved the specific benefits of exercise to the liver [1].

This time, the team of He Congcong from Northwestern University found that the initiation of liver autophagy is a key link for exercise to bring systemic metabolic benefits.

Their research shows that exercise causes muscle to release a signal molecule called fibronectin 1(FN1), which reaches the liver through blood circulation and acts on α5β1 integrin on the surface of liver cells, thus triggering autophagy in the liver, thus improving metabolic health problems such as insulin sensitivity [2]. The article was recently published in the journal Cell Metabolism.

Screenshot of the first page of the paper

Autophagy abnormality has been considered to be related to many metabolic disorders in recent years. Previous studies have shown that exercise can induce autophagy in skeletal muscle of mice or humans through energy stress, oxidative stress and increase of intracellular Ca2+ level. In addition to these muscle tissues, many studies have shown that exercise can also activate autophagy in non-contractile muscle tissues such as liver, pancreas and adipose tissue, but the mechanism is still unclear [2].

Therefore, He Congcong and others deeply explored whether exercise can unlock the autophagy pathway of the liver and its role in systemic metabolic health.

First of all, they constructed a group of mouse models (ATG7Δliver) in which autophagy gene ATG7 was specifically down-expressed, so as to inhibit autophagy in liver cells.

Under the regular diet, the metabolic indexes of these mice are similar to those of wild-type mice. However, in the case of high-fat diet and running for 50 minutes every day, after 7 weeks, although the weight of the two groups of mice was similar, unlike wild-type mice, exercise did not save the glucose tolerance and insulin sensitivity of ATG7Δliver mice under high-fat diet.

These indicate that the improvement of metabolic health by exercise depends on autophagy of liver cells.

Exercise can’t save at G7 δ liver mice.

The results of in vitro experiments show that plasma and serum of wild-type mice can activate hepatocyte autophagy when they are in exercise, but plasma or serum at rest can not. In other words, there is a switch in the blood to turn on the autophagy pathway of the liver.

After protein’s proteomic analysis of the blood of mice, the researchers found that the level of fibronectin (FN1), an extracellular matrix protein that can be expressed by many types of cells, increased significantly in the blood of wild-type mice after exercise.

In addition, the experimental results in vitro showed that adding activator of AMPK, a cell energy sensor, to the culture medium could induce muscle cells to secrete FN1, but could not induce liver cells to secrete FN1. This suggests that the level of FN1 in blood is regulated by AMPK, and exercise may activate AMPK in muscle.

In the exercise state (when AMPK is activated), the extra FN1 comes from muscle cells, not liver cells.

In order to further study the role of muscle-derived FN1 in exercise, researchers specifically depleted FN1 (FN1(FN1Δmuscle) in mice muscles.

The results showed that the level of FN1 in the blood circulation of FN1Δmuscle mice did not increase after wheel running. Compared with wild-type mice, these mice did not get the improvement of systemic insulin sensitivity caused by exercise.

Specifically, the exhaustion of muscle-specific FN1 in mice did not affect its exercise-induced muscle autophagy, muscle morphology and exercise ability, and at the same time, the improvement of exercise-induced insulin signal transduction (activation of Akt regulatory factors) could be observed in its muscles. However, in this group of mice, the exercise-induced liver autophagy pathway was not activated, and no improvement in exercise-induced insulin signal transduction was observed in the liver.

These indicate that FN1 released by muscle is very important for the initiation of liver autophagy during exercise.

The depletion of FN1 in muscle affects liver autophagy.

From the mechanism point of view, during exercise, muscles secrete FN1, which leads to the increase of FN1 level in blood circulation. FN1 binds and interacts with α5β1 integrin in liver, activating IKK-JNK1-BECN1 signal pathway in liver cells, thus starting liver autophagy, promoting liver autophagy and reducing liver fat accumulation.

If the expression of α5β1 integrin in the liver of mice is inhibited, the weight, glucose tolerance and insulin sensitivity of mice can not be improved after high-fat diet and exercise, which proves the importance of α5β1 integrin -IKK-JNK1 pathway for the benefit of exercise-induced metabolism.

Overall, this study completed by He Congcong’s team shows that liver autophagy plays a key role in exercise-induced metabolic benefits, and reveals its mechanism. In addition, this study also shows that the metabolism of non-contractile muscle tissues such as liver can also be regulated by muscles.

References:

[1]Stine, J. G., DiJoseph, K., Pattison, Z., Harrington, A., Chinchilli, V. M., Schmitz, K. H., & Loomba, R. (2022) . Exercise Training Is Associated With Treatment Response in Liver Fat Content by Magnetic Resonance Imaging Independent of Clinically Significant Body Weight Loss in Patients With Nonalcoholic Fatty Liver Disease: A Systematic Review and Meta-Analysis. The American journal of gastroenterology, 10.14309/ajg.0000000000002098. Advance online publication. https://doi.org/10.14309/ajg.0000000000002098

[2]https://www.sciencedirect.com/science/article/abs/pii/S1550413123000116

The author of this article is Zhang Aidi

Read the original text

　　361 cylinders

　　How many ships are you divided into?

　　No more than one ship

　　There is no room for a ship without a cylinder.

　　Wine is the source of Li Bai’s poetic prosperity, and later generations used the mathematical poem "Li Bai Drunk" to describe Li Bai’s heroic spirit of drinking and writing poems. The full text of the poem is: Li Bai walks down the street, carries a pot to buy wine, doubles it when he meets a shop, drinks a bucket when he sees flowers, meets shops and flowers three times, and drinks all the wine in the pot. How many buckets is there in the pot? Can you work out this problem? Teng Yaoyun, a 92-year-old math teacher, used backward calculation, and the answer was 7/8 (7/8).

　　Is math really boring? In order to refute this idea, Teng Yaoyun began to write a book when he was in his 80s. It took more than five years, and more than 400,000 words of "Mathematical Beauty and Mathematical Thinking Method" was finally published before the Teachers’ Day this year.

　　In order to make more people love mathematics, she wrote books in her 80 s.

　　Teng Yaoyun, who graduated from the Mathematics Department of National Women’s Teachers College in 1949, has been teaching mathematics for 36 years, but found that many people are afraid of difficulties in mathematics. Teng Yaoyun’s son, Zhao Yousheng, a professor at the School of Public Administration of Chongqing University, told the chongqing morning post reporter: "My mother told us that many people find mathematics difficult, but it is actually beautiful. The reason why my mother wrote this book is mainly to make the study and teaching of mathematics no longer boring, to help students find beauty in mathematics, to cultivate their interest in learning in the feeling of beauty, to master the thinking method of learning mathematics in interest, and to turn the headache mathematics into a favorite mathematics. "

　　Teng Yaoyun’s "Mathematical Beauty and Mathematical Thinking Method" is just such a book that people no longer feel "horrible" about mathematics. In order to make mathematics more attractive, Teng Yaoyun also asked his wife to join in. Zhao Yousheng said: "My father Zhao Jiayi is an old teacher of Southwest University, and in the book ‘ Mathematics and Poetry ’ In part, there is a palindrome poem by my father, "I have a scene."

　　The golden section can be so interesting.

　　In Teng Yaoyun’s view, mathematics can explain many problems in the real world. For example, the golden section (0.618) is closely related to the magnetic field, human body structure, architectural monuments and even military affairs on the stage. In "Mathematical Beauty and Mathematical Thinking Method", the old man Teng Yaoyun wrote: During the period of War of Resistance against Japanese Aggression, some theatrical troupes were stationed in Jiangjin, and there would be some lectures. I was most interested in the magnetic field on the stage. The announcer had to announce the curtain in the magnetic field, and the wonderful performances had to be performed in the magnetic field to attract the audience to the maximum extent. In the teacher’s explanation, this magnetic field was the golden section of mathematics of 0.618. "

　　For example, in the military, the value of 0.618 is also very useful. "When the rifle was first manufactured, the ratio of the length of the gun body to the handle was very unreasonable, so it was not convenient to aim. In 1918, Alvin, a corporal of the American Expeditionary Force, reformed this rifle, and the ratio of the reformed rifle type to the gun body was just 0.618."

　　The mystery in traditional poetry is originally a mathematical answer.

　　Professor Zhao Yousheng said that a poem circulated among the people can actually be analyzed by mathematics. This poem is: 361 tanks, which can be divided into several ships at your disposal. No more than one ship is allowed, and no one tank is allowed to be missing. After mathematical analysis, the answer to this poem is 19 ships, each with 19 cylinders. "My mother explained it with the square root of." Zhao Yousheng said. Our reporter Luo Xuemei

　　Zhongxin. com, Beijing, November 23rd (Wang Jiayu, Li Jinlei) Brush your face is going deep into the lives of Chinese people. Recently, many domestic banks have launched the ATM machine "face-brushing withdrawal" function. So, what is the "face-brushing withdrawal"? What about its security? Zhongxin. com conducted a field visit.

　　Experience — — You can withdraw money in half a minute.

　　Zhongxin. com noted that recently, a number of banks, including China Merchants Bank and Agricultural Bank, announced the launch of ATM machines’ "face-brushing withdrawal" function in some cities and outlets, which attracted attention.

　　People experience the "face-brushing and withdrawal" function of ATM machines. Zhongxin. com reporter Li Jinlei

　　So, how should "brush face to withdraw money" operate? What kind of experience? Zhongxin. com came to the business outlet of a bank in Beijing. At present, the outlet has been equipped with an ATM machine with the function of "brushing face to withdraw money".

　　Click the "brush face to withdraw money" button on the ATM machine, and enter the face recognition interface, prompting the cashier to look straight at the camera, exposing his forehead, bareheaded, and keeping a distance of 50CM from the camera.

　　Zhongxin. com found that face recognition is very fast, only 1-2 seconds. After the face is brushed, the cashier is required to enter the ID number or mobile phone number, and finally enter the withdrawal password to enter the account selection page. After selecting an account, you can withdraw money, and the whole process can be completed in about half a minute.

　　The prompt of "brush your face to withdraw money" on the bank ATM. Zhongxin. com reporter Li Jinlei

　　So can you brush your face successfully when the cashier wears a hat and sunglasses? When the cashier tried to wear a hat and sunglasses one after another, it was unrecognizable when brushing his face.

　　Do you need to open it separately? Is there a limit?

　　Regarding whether the face-brushing withdrawal function needs to be opened separately, the customer service staff of Agricultural Bank told Zhongxin.com that "face-brushing withdrawal" does not need to be opened; The customer service staff of China Merchants Bank said that this function needs to be opened. The process is to log in to the mobile banking, click "My"-"All", and click "ATM Brush Face Withdrawal" in the "Assistant" to open it.

　　In addition, there is a quota limit for "face-brushing withdrawal". China Merchants Bank’s cumulative withdrawal limit for a single card on the same day is 3,000 yuan; Agricultural Bank of China does not exceed 3,000 yuan per day for a single transaction, 10,000 yuan per day in total, and no more than 5 times per day.

　　The new "face-brushing withdrawal" option on the ATM of China Merchants Bank. Zhongxin. com reporter Li Jinlei

　　Investigation — — What do people think of "brushing face to withdraw money"?

　　So, what is the public’s attitude towards this convenient function of withdrawing money without inserting a bank card?

　　When Ms. Wang, a white-collar worker, first heard about this function, she expressed her concern to Zhongxin. com: "This thing is very dangerous. If you are kidnapped, just take it directly and brush your face without forcing you to say your password."

　　Others are not clear about the process of "brushing face to withdraw money", thinking that bank cards still need to be inserted. Some people, like Ms. Wang, mistakenly think that they can withdraw money by brushing their faces without entering other information.

　　After the field experience, we can find that, in fact, you don’t need to insert a bank card to withdraw money, but after face recognition, you still need to enter your personal identification information and withdrawal password before you can withdraw money. It’s not what you think, you can withdraw money simply by brushing your face.

　　ATM machine with face-brushing and withdrawal function. Zhongxin. com reporter Li Jinlei

　　Discussion — — Is it safe to "brush your face to withdraw money"?

　　Qiu Xuekan, a visual analysis expert of 360 Artificial Intelligence Research Institute, told Zhongxin.com that "face-brushing withdrawal" uses face comparison technology, that is, whether the face in front of the ATM and the face registered by the user ID card in the system are the same person, before comparison, it is necessary to ensure that the face in front of the camera is real and effective, that is, live detection.

　　Regarding whether "face-brushing withdrawal" is safe, the relevant bank told the media that the technology is safe, and it can completely resist photos, face-changing videos, remakes and mask attacks, with high recognition accuracy.

　　However, many people are still worried that technologies such as 3D masks may still break through this technology. Qiu Xuekan emphasized that "brush face to withdraw money" does not mean that you can withdraw money by brushing your face, but you can first brush your face and enter your mobile phone number for identity comparison, and then enter your password to withdraw money. Therefore, the role of face brushing is to replace the physical bank card, and the security of withdrawal is still mainly guaranteed by password, and the key is to ensure that the withdrawal password is not leaked.

　　Huang Di, an associate professor at Beihang University, said that every technology can’t be perfect, and high-tech technologies have both "attack" and "defense". For any science and technology, attacks with various intentions always exist. After the system is threatened, some emergency plans will be put forward according to the attacks. "Attack" and "defense" can be said to be progressing together.

　　Data map: "Brush face" enters and exits the dormitory, and Shandong University now recognizes "black technology". Photo by Zhao Xiao

　　Extension — — "Brush your face" has penetrated into the lives of Chinese people

　　It can be seen from observation that brushing your face has penetrated into all aspects of Chinese life, such as unlocking your mobile phone, opening the entrance guard, entering the station and ordering food.

　　According to media reports, Shandong University has launched a face recognition system in student dormitories, so students can go in and out of the dormitory even without campus cards, and girls can be identified when they make up or remove makeup.

　　Some railway stations are also equipped with face recognition systems, and passengers can brush their faces and enter the station, such as Guangzhou South Railway Station, Lanzhou Railway Station and Beijing West Railway Station. Take Beijing West Railway Station as an example, the entrance channel of its North Square has been enabled with "brushing face to enter the station". Passengers only need to place their second-generation ID cards and blue magnetic card tickets according to the prompts, and keep their faces facing the camera for identification. If the ticket holders match, they can pass.

　　Data Map: At Guangzhou South Railway Station, passengers enter the waiting hall after being verified by face recognition. China News Service reporter Chen Yushe

　　"Brush your face and order food" has also become popular. Alipay launched a "face-brushing payment" service in a restaurant in Hangzhou. After the function is enabled, users only need to bind their mobile phone numbers and "brush their faces" through the payment platform to complete the transaction, and there is no need to worry about the embarrassment of the phone being out of power or forgetting to bring it when paying.

　　In addition, there are "face-brushing attendance", "face-brushing accommodation", and face-brushing unlocking of Apple phones … …

　　In the list of the top ten breakthrough technologies in the world in 2017 published by MIT Science and Technology Review, the authoritative scientific magazine in the United States, "brush face payment" entered the list.

　　In the eyes of the industry, face recognition is progressing continuously, and its application scenarios will be more and more abundant with the improvement of effect and the reduction of hardware cost. (End)

　　Purple Mountain/Jinling Evening News (Reporter Zhai Yu correspondent Ma Yixing Liu Qiyue) Stepping into the late autumn, more and more delicious foods have recommended "peach gum" on major platforms from the media, and a bowl of smooth and moist peach gum stew has become the heart of countless girls with exquisite health care. In the mouth of many food bloggers, peach gum is full of collagen, and drinking 30 masks in a bowl is a rare "beauty-preserving product". Plus, the price is close to the people, and Jianghu people call it "civilian bird’s nest". Is peach gum really so miraculous? Experts from the Institute of Quality, Safety and Nutrition of Jiangsu Academy of Agricultural Sciences tested peach gum. Give you a real peach gum!

　　Peach gum (also known as peach gum) is a colloidal translucent substance secreted by the trunk of Rosaceae plants such as peaches and plums after mechanical injuries (such as insect bites and cuts) or fungal infections. Theoretically, the gums secreted by apricot trees and cherry trees belonging to the Rosaceae family can all be called peach gum, but usually, what we call "peach gum" refers to the colloidal substances secreted by peach trees. The freshly secreted peach gum is sticky, and the peach gum we buy every day is a solid similar to amber after sorting, impurity removal and drying. According to experts, "Xueyan", which is also a health care product in online celebrity, has nothing to do with "Bird’s Nest" and is also a kind of gum. According to experts from the Academy of Agricultural Sciences, no matter peach gum, tremella, snow swallow or coral grass, all plants can’t contain collagen. Because collagen is a kind of protein unique to animals, it is the main component of connective tissue of animals such as skin, blood vessels and bones.

　　In order to make the majority of foodies eat clearly, scientifically and reasonably, experts from the Institute of Quality, Safety and Nutrition of Jiangsu Academy of Agricultural Sciences conducted a systematic study on the main components, functions and nutrient composition of peach gum. The researchers dried peach gum samples from different producing areas and varieties in the early stage or at low temperature, and then crushed and screened them to get peach gum powder. After ultrasonic extraction, filtering and sampling detection. It is found that the main components of peach gum are plant polysaccharides (70%-80%), such as glucuronic acid, xylose, galactose and other monosaccharides, which is also known as soluble dietary fiber. Peach gum polysaccharide has good water absorption, and its volume expands after water absorption, which can increase satiety and reduce food intake after eating; Secondly, it can promote intestinal peristalsis and has a good moistening effect; Thirdly, peach gum polysaccharide can not be directly absorbed by human body, so it does not provide heat and can effectively control blood sugar. Researchers also found more than ten kinds of flavonoids in peach gum, among which hesperidin is the most abundant (generally found in citrus fruits). At present, many studies have shown that flavonoids can improve the antioxidant and scavenge free radicals in animals.

　　Generally speaking, although peach gum is not as fantastic as some merchants boast, it is indeed a rare good thing, which is of great help to lose weight, reduce blood sugar, relax bowels and resist oxidation. However, even the best things can’t be overdone. Experts remind that peach gum is not easily digested and absorbed by the human body, so it is not recommended for people with weak stomach, the elderly, pregnant women and children.

Medium-sized SUVs are deeply loved by domestic consumers because of their fashionable design, practical interior space and relatively close-to-the-people price. Therefore, this market segment has also become a battleground for all car companies, bringing their own brand-new products. Not long ago, Chery Automobile launched its brand-new plug-in medium-sized SUV, which not only has many advantages of medium-sized SUV, but also has a comprehensive fuel consumption of only 1.35L per 100 kilometers and a starting price of less than 130,000, which can be described as the strength of plug-in SUV.

Appearance: the atmosphere and fashion are integrated.

In terms of appearance, Fengyun T9′ s front face adopts a large-size borderless air intake grille, and the interior is decorated with straight waterfall elements, and then matched with decorative strips of the same color as the body above and below the grille, making the whole front face look both atmospheric and fashionable.

The roof line on the side is smooth and dynamic, coupled with the sharp waistline and dense spokes, the sports atmosphere is excellent. The taillight adopts the popular penetrating design at present, and dot matrix elements are added inside the light group, which is very recognizable after lighting.

In terms of details, Fengyun T9′ s headlights are very sharp in shape, and all the interior parts are equipped with LED high/low beam lights as standard. There is also an air duct under the headlights, and it is blackened, which further enhances the fashion sense of the front face.

At present, the popular hidden door handle design is not absent, which can effectively reduce the drag coefficient of vehicles. In terms of rims, the evaluation car adopts a dense-spoke design, and the visual effect is excellent. The matching tire comes from Cooper EVOLUTION CTT series, which is a quiet and comfortable SUV tire with the specific specification of 245/50 R20.

Interior: Minimalist design style.

In terms of interior, Fengyun T9′ s overall design style is simple, only a few physical buttons with common functions are reserved, and with a large number of wood grain materials and chrome-plated decoration, the sense of luxury is excellent, which is in line with the aesthetics of current consumers.

Fengyun T9 comes standard with a 15.6-inch central control panel, with a screen resolution of 2.5K and a delicate display effect. The car has built-in Qualcomm Snapdragon 8155 chip, which has smooth operation and outstanding response speed. At the same time, it also has practical functions such as 4G network, dual-area voice wake-up recognition and CarPlay.

There are two mobile phone slots under the central control panel, but only the one on the left supports wireless charging, with cooling holes, and the details are thoughtful. The evaluation car is equipped with SONY Sony stereo, with 8 speakers, and the overall sound quality is excellent, suitable for playing pop music.

In terms of comfort configuration, the evaluation car is equipped with a large opening size and excellent light transmission. Although the seat is made of imitation leather, it supports multi-directional electric adjustment and the filler is soft. Coupled with the heating, ventilation and massage functions of the front seat, the ride comfort performance is worthy of recognition.

Performance: Power meets demand. The chassis is mainly comfortable.

In terms of power system, the evaluation vehicle adopts Kunpeng super hybrid C-DM system, which is composed of 1.5T engine and front single motor, with a total torque of 265kW, a pure electric cruising range of CLTC of 120km and a minimum fuel consumption of WLTC of 5.2L/100km.

In the actual experience, thanks to the blessing of the motor, the evaluation car started very briskly and didn’t jump at all. The whole speed-up process was very smooth and comfortable, and the adjustment style was biased towards stability. Although there are three driving modes: comfort, standard and sports, even in sports mode, the overall driving style is only a little radical, but the overall power performance is enough to meet the needs of most consumers.

The steering wheel feels light and easy to use, and with the increase of vehicle speed, the steering wheel will also become heavy, increasing the safety when driving at high speed. In terms of NVH, with the front double-decker sound insulation glass, the overall NVH performance of the evaluation vehicle is satisfactory, and there is obvious wind noise only when driving at high speed, but it will not affect the driving comfort of the people inside the vehicle.

The evaluation car also has L2-level assisted driving ability, including lane departure warning, rear collision warning, reversing car side warning and other functions, which can help users reduce driving fatigue. When in use, it can be turned on with one key by pressing the button on the left side of the steering wheel, and a blue steering wheel icon will be displayed on the left side of the instrument panel for prompt.

The evaluation car adopts the combination of front McPherson independent suspension and rear suspension. The suspension filters the fine bumps of the road very thoroughly, and can easily cope with the long wave ups and downs, ensuring the ride comfort of the people in the car. It is very suitable for home adjustment.

Space: Seven-seat layout meets household needs.

In terms of seating space, the evaluation car adopts a seven-seat layout of 2+3+2, and the experiencer with a measured height of 175cm has ample seating space in both the front row and the second row. It is worth mentioning that the evaluation car supports one-button electric forward co-driver and the second row of seats, which is convenient for passengers to enter the third row. When the experiencer comes to the third row, the legs have completely pushed against the back of the front seat, and the head has only one finger space. Due to the positioning of the vehicle, the space in the third row is slightly cramped, which is not suitable for long-term riding.

In terms of storage space, the evaluation car is equipped with six cup holders, which can well meet the needs of passengers in the car. In addition to the conventional storage space, the bottom of the center console has been hollowed out to form a large storage space, which not only can hold some large items, but also has certain privacy.

The trunk of the evaluation car is relatively flat, with a conventional volume of 815L, and the second row and the third row of seat backs all support electric tilting or lifting, which is very convenient. After the seat is put down, the volume of the trunk can reach 2065L at this time, which can not only change into a big bed every second, but also be more than enough for moving.

Safety: equipped with rich active/passive safety configuration.

In terms of safety configuration, the evaluation vehicle is equipped with a wealth of active/passive safety configurations. Active/passive safety configurations such as main/passenger seat airbags, front/rear head airbags (air curtains), lane departure warning system, DOW door opening warning, front collision warning, etc. are all equipped on the evaluation vehicle, which can effectively improve driving safety and occupy certain advantages in the same class.

Summary:

Twenty-three years ago, with its high cost performance, Chery Fengyun series achieved sales of nearly 78,000 units in two years. Through this evaluation, we can feel that Fengyun T9 not only has the advantages of high face value, high configuration and large space, but also has lower fuel consumption and longer comprehensive endurance due to the addition of Chery Kunpeng plug-in system. In addition, the starting price is less than 130,000 yuan, so Fengyun T9 still maintains the advantage of high cost performance of Chery Fengyun series, and it is a plug-in medium-sized SUV that is very suitable for home use.

Yichexun On February 28th, iCAR03, the first model of Chery’s Icar brand, was officially launched, with a price of 109,800-169,800 yuan. The new car adopts a hard-core square box shape, and offers two options of single-motor and dual-motor four-wheel drive in terms of power, and is equipped with iWD intelligent electric four-wheel drive, with a maximum cruising range of 501km.

The official also announced a wealth of car purchase courtesy, including lifetime vehicle warranty+lifetime three-electricity warranty+lifetime free rescue *1, and (the first private user) free original charging pile+free installation service; 10G/ month entertainment traffic for 2 years (limited to large users before May 31st); The replacement subsidy for this brand is 3,000 yuan, and the replacement subsidy for other brands is 2,000 yuan; Enjoy a down payment of 888 yuan and a low-interest loan for up to 5 years; From the day of listing to May 31, the four-wheel drive long-performance intelligent driving version will allow users to enjoy autonomous high-speed navigation+memory parking function for free for life.

In terms of appearance, iCAR 03 is more individual and adopts a tough design concept, which looks like a reduced version of Jetway Traveler, and its square shape makes it reflect the feeling of a hard-core off-road vehicle. In addition, the LED daytime running lights of the new car also adopt the "I" letter style corresponding to the brand name, which has high recognition.

From the side of the car body, the overall shape of the new car is angular, the front and rear fenders are wider than the car body, and hidden door handles and five-spoke wheels are also used. In terms of body size, the length, width and height of the new car are 4406/1910/1715mm respectively, and the wheelbase is 2715mm. The short front and rear suspension and the traditional four-door design can improve the passability of the vehicle and ensure the seating space in the vehicle.

At the rear of the car, the taillights of the new car echo the daytime running lights, and also form the style of the letter "I" to further enhance the recognition. In addition, the rear of the car is also equipped with an external storage device to further close the relationship with hard-core off-road vehicles.

In addition, this car not only has a hard appearance, but also adopts a steel-aluminum mixed body structure and an embedded all-aluminum girder to further ensure the rigidity of the car. There are also multi-spoke aluminum alloy wheels, roof racks, large-size skylights and square external "small schoolbags". AT the same time, the new car can also be equipped with 18-inch AT all-terrain tires to increase its off-road performance.

In terms of interior, iCAR 03 adopts design elements that echo the appearance, including rectangular full LCD instrument panel and air conditioning outlet, and two thick handles are also designed in the central control area of the car, which echoes the hard-core appearance design of the vehicle.

Only the center console of the vehicle has a layered design, and the central passage area is also equipped with a knob-type electronic gear shifting mechanism, and with a 15.6-inch floating multimedia touch screen, the overall style is more scientific and technological.

In terms of configuration, the new car will be equipped with basic functions such as automatic headlights, automatic wiper, electronic handbrake, 6-way electric seat for main driver, dual-zone automatic air conditioning, tire pressure monitoring, 8 speakers, etc. Some models will also be equipped with NFC keys, panoramic images, trunk electric suction door, cockpit 8155 chip and other functions.

In terms of power, it is divided into rear-drive version and four-wheel drive version. The maximum power and torque of the rear-drive version motor are 135kW and 184N·m, and the total power and torque of the four-wheel drive version motor are 205kW and 279N·m respectively.

In terms of battery life, the new car adopts lithium iron phosphate battery, with batteries from Contemporary Amperex Technology Co., Limited. The battery capacity is divided into three models: 50.63kW·h, 65.69kW·h and 69.77kW·h, and the CLTC battery life is available in three types: 401km, 501km and 472km.

What’s your first impression of Lecter? Exercise? Now, with its constantly updated products, Linke can also share a piece of the mainstream household SUV market. The price starts from 195,800, and the 2025 LECK 08 EM-P is to make the whole family travel more worry-free!

On August 8th, the 2025 LECK 08 EM-P was officially launched, and six models were launched, with the price range of 1958-258,800 yuan. This upgrade not only brought a new color scheme of Dawn Blue, but also synchronized the rejuvenated Flyme Auto 1.6.0 system, and added many intelligent functions such as "sentry mode", rhythm of ambient light, water inlet monitoring, NFC key of mobile phone and so on.

Appearance: renew the color scheme and keep pace with the times.

The new car continues the family design language, retaining the split headlight group and the Yingneng crystal through taillight, with high recognition.

The five-spoke rim design highlights its fashion sense. The side of the car body and the roof line are inclined, showing a dynamic effect as a whole. In addition, the classic elements such as hidden door handles, frameless doors and two-color car bodies continue to be preserved. In addition to the new morning light blue, the car body also offers five colors: Obsidian Silver, Crystal Green, Twilight Purple, Grey and Black.

In terms of body size, the length, width and height of the new car are 4820/1915/1685mm and the wheelbase is 2848mm respectively.

Interior: Simple and luxurious space for daily use.

The interior design of the 2025 Lectra 08 EM-P is simple and luxurious, equipped with a 12.3-inch full LCD instrument and a 15.4-inch central control panel, with a strong modern atmosphere. There are almost no physical control buttons in the car, but there are many spokes on the center console, which brings a good hierarchical effect. It is worth mentioning that the car is also equipped with Harman Kardon 23 speakers. The trunk of the new car has a volume of 545 liters, which can be extended to 1277 liters after the rear seats are put down.

The new system supports "sentry mode" and car wash mode, bringing users an immersive intelligent driving experience. In terms of seats, the new car provides full-seat ventilation, massage and heating functions, and is the only SUV in its class with four seats comfortably configured. In addition, the addition of the NFC key of the mobile phone has realized the intelligent experience of "getting on the bus without feeling".

Configuration: Intelligent driving to enhance intelligent experience upgrade

The new car is equipped with the first Co pad equipment linkage, and uses two Longying No.1, the NPU computing power of the two chips is as high as 16TOPS, and the GPU computing power is as high as 1800GFLOPS. In addition, the LYNK Flyme Auto 1.6.0 car system was introduced into the new car for the first time. It is equipped with the intelligent driving computing platform of Yikatong Tianqiao Pro, equipped with up to 28 high-perception hardware, and supports NOA pilot driving assistance function.

The brand-new model has eight core intelligent driving capabilities, including intelligent up-and-down ramp, intelligent driving into the fast lane, intelligent shifting lever to change lanes, voice control to change lanes and active avoidance of carts, which greatly reduces the driver’s fatigue.

Power: 1.5T plug-in, 5.5L feed fuel consumption.

In terms of power, the new car is equipped with 1.5T plug-in hybrid power. The maximum power of the 1.5T engine is 120kW, and the peak torque is 255Nm. The single-motor version is equipped with a front 160kW motor, and the dual-motor version is equipped with a front 160kW motor+a rear 156kW motor, matching the 3DHT speed change. The four-wheel drive version accelerates to 4.6s per 100 kilometers.

In terms of battery life, CLTC provides three types: 120km, 220km and 245km. Add 92 # gasoline, the fuel tank volume is 60L, and the fuel consumption is 5.5L.

What do you think of this home SUV with smart technology and luxury configuration? Welcome to communicate together.