Twenty-nine years ago, a mathematical genius of Peking University would rather serve dishes in the United States than return to China to be a professor. How is he now?

A person's choice is very important. Once they make a decision, they must bear the consequences themselves. Of course, everyone's choice is voluntary, and we have no right to judge other people's decisions. Twenty-nine years ago, a student from China studied in the United States. He turned down the opportunity to return to China as a professor in difficult times and chose to work in the United States. This man is Zhang, who is known as a mathematical genius.

Zhang was born in 1955. His parents lived in Beijing for work reasons, but he stayed in Shanghai with his grandmother. 13 years old went to Beijing with his grandmother. Zhang is very studious since he was a child. 1978 was admitted to Peking University to study his favorite math. After four years of college life, he studied for a master's degree with Professor Pan Chengbiao (an expert in number theory), which laid a solid foundation for his later number theory. After finishing his master's degree, he will study for a doctorate. This time, Zhang still got the help of the nobles.

From 65438 to 0985, President Ding of Peking University recommended Zhang to Mo Zongjian (several generations of experts) and invited him to go to Purdue University with Mo Zongjian. Unfortunately, his trip to America was not smooth. Zhang's doctoral research is Jacobian conjecture, and he wants to use it as his graduation thesis. However, his thesis has not been recognized by his tutor. He could have received his doctorate in two years, but it took Zhang seven years to graduate, and he hasn't written him a letter of recommendation. 199 1 year, Zhang finally got his doctorate.

Then when Zhang was looking for a job, he lost a post-doctoral job because he didn't have a letter of recommendation. In the following six or seven years, Zhang couldn't find any decent job, so he had to work as a waiter in a local restaurant, serving dishes and doing other odd jobs. After learning about this situation, Ding contacted and hoped that he would return to China to become a professor in Peking University, but this proposal was rejected by Zhang. After Zhang won, he talked about this problem in an interview: the domestic environment can't make me concentrate on studying mathematics. If I go back to China, I may not be able to achieve today's achievements.

From 65438 to 0999, Zhang Shilai returned to school with the help of friends and became a lecturer and assistant professor in an American university. He has been doing this for more than ten years. Nevertheless, Zhang still has the largest hot pillow in mathematics, and he has never given up studying it. On 20 13, a number theory paper on "twin prime number conjecture" was published in Mathematical Yearbook. This paper also set a record for the fastest published papers in this journal 130, which proved that the theory published by Zhang was correct. 20 14 Zhang was invited to Korea to attend the international mathematics conference with many mathematicians.

Zhang was once an American citizen. He thinks it is more beneficial to his mathematical research in the United States. Now he is still studying Riemann conjecture, hoping to make a breakthrough. Zhang certainly has discussions in mathematics, but many people are unhappy because they don't want to return to China because of changing their nationality. In addition, Zhang is more outstanding than many mathematical geniuses who have to go back to China. But in fact, this is only a personal choice, and we have no right to blame others.