The “love bean” in the hearts of millions of children is him!


Wearing a white coat and goggles, Dai Wei, a 63 year old British chemist, is often regarded as a magic Santa by Chinese children and speaks fluent Chinese.

Dai Wei’s real name is David g. Evans. He graduated from Oxford University with a bachelor’s degree and a doctor’s degree. Now he is a distinguished professor of Beijing University of chemical technology. But he is more familiar with the identity of “Kwai Tai lab” on the fast platform. 8.6 million fans are enough proof of how popular Dai Wei’s “magic” is.

“If I give lectures in schools and science and technology museums 365 days a year, I can see a lot of students, but with so many Chinese students, the efficiency is too low.” In 2018, Davy opened the Kwai Fu Lab.

“My assistant, Soller, said that no one would watch, but scientists need to test it through experiments.” Dai Wei said. So he and his assistant hit it off and decided to actively push popular science knowledge on the current popular short video platform, rather than just waiting for users to come to them on the more professional niche platform.

Slowly, their short popular science videos began to attract attention, and many of them were viewed tens of millions of times. More than 40% of the fans are young people, including 25% of teenagers.

Dai Wei likes to watch the fans’ messages in the comments area, so that he can see where the doubts are in time. Some problems, fans can solve each other, for can’t solve, Dai Wei himself to reply.

“To do science popularization is to plant seeds in children’s hearts. They may decide to become scientists and chemists, but this is only a small part.” Dai Wei said that he hopes that people can learn to judge the authenticity of information with scientific thinking in this era of information explosion.

“One website tells you that if you drink six cups of coffee every day, you will live to 99. Another website will tell you that drinking six cups of coffee every day is easy to get cancer. Which is true? Maybe it’s all empty. ” David said, “you can’t say this website is beautiful, I believe it. You should use scientific thinking to judge and ask where the evidence is

Dai Wei had many choices, but he chose chemistry, China and popular science. If time goes back, is there another possibility? This question made Dr. Dai Wei think for a short time, “this is not my character, I don’t say if, I am more concerned about the present and the future. But I know that if I don’t come to China, I will regret it. “

Dai Wei got to know the country from a Chinese English weekly, Beijing weekly. In his eyes, China, like chemistry, is mysterious and charming. He was 13 years old that year, and he certainly did not expect that he would have such a deep relationship with China.

“In the early 1970s, there were very few foreign journalists in China, and we had little news about China. A country as big as China is like a black hole. We have no information at all. ” He said.

Dai Wei looked through the yellow paper of Beijing weekly brought by the reporter, and everything seemed like yesterday. “This article is about young people in Beijing who are about my age. Their life experience is totally different from mine. When I was in school, they went to the countryside to work with their brothers from the farmers.”

Dai Wei looked through the Historical Journal of Beijing weekly in the 1970s. As an old reader, he can still remember some articles.

In 1987, Dai Wei came to China for the first time. Since then, he has come to China once or twice a year for academic visits and travel at the same time. In 1994, he began cooperative research with Beijing University of chemical technology, and decided to work in the University in 1996.

“If I first came to China in 1996, I would not decide to work right now. Because China in 1996 was much behind Britain in that year, and it is also much behind China now. ” Dai Wei said that it was precisely because of his previous continuous experience in China that he saw the curve of China’s change and believed that China in the future should not be underestimated, so he went to other places regardless of the confusion of his colleagues.

“Whether it’s an individual or a country, you have less opportunities to follow others.” He said. After more than ten years of research work, Dai Wei gradually turned to popular science, once again took advantage of the situation and walked out of a different road.

Independent thinking is Dai Wei’s attitude towards science and the key to his choice.

“Many foreigners told me that if I were you in China for such a long time, I would not be able to hold on.” Dai Weichang suggested that they first think about whether the problems they are facing are China’s problems or human problems.

“Every time you encounter difficulties, think calmly. Have I seen this problem in England before? Most of the time, I’m sure Dai Wei said, “it’s a matter of attitude. How can we face the difficulties? The longer you stay, the more experienced you will be. But if you don’t change your mind, it’s no use staying longer. “

In the past 25 years, Dai Wei, a spokesman of “foreign scientists in China”, has witnessed the Chinese people’s hasty pace and unshakable original intention.

During the outbreak, many Britons decided to return home, while Dai Wei chose to stay. When SARS broke out 18 years ago, Dai Wei witnessed the unity of the Chinese people in Beijing. “Now it seems that I made the right decision this time.”


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