Dr. Sun Weidong has been living on the streets of the United States for 16 years, which has caused great controversy in China.
Those who support and sympathize with him believe that the sinking of a genius is a great loss to the academic world, and that a compatriot with the blood of the Chinese nation is sympathetic.
Opponents argue that he is unworthy of sympathy for having become an American citizen and abandoning the country in which he was raised.
For this reason, the two parties quarreled.
It seems to be a discussion about Sun Weidong's personal fate, but in essence, it is the hatred of netizens for the non-return of Chinese elite talents. Sun Weidong came to the United States to study through CUSPEA, and he is a public international student. What is cuspea?Here's a quick introduction. 
In 1979, Tsung-Dao Lee, a Chinese-American physicist, Nobel Prize in Physics, and a professor at Columbia University, gave a physics course to nearly 1,000 outstanding young people in Beijing for nearly two months from morning to night. Therefore, Lee Zhengdao designed the CUSPEA program, which is called the Sino-US Joint Physics Graduate Program (CUSPEA, China-U.).s. physics examination and application）。Under the guidance of Tsung-Dao Lee, China and the United States reached an agreement that students participating in the CUSPEA program can take the TOEFL test without taking the TOEFL test, and those who pass can go to the United States for further study after being recommended by the Chinese side. After 10 years of the CUSPEA project, a large number of outstanding top Chinese students were selected to study for doctoral degrees at dozens of universities in the United States, and many of them became pillars of talent after returning to China, which alleviated the problem of talent shortage in China to a certain extent and made great contributions to the development of the motherland. Unfortunately, some people end up living and working in the United States.
Professor Yan Keats, a physicist, educator and one of the founders of modern physics research in China, was involved in the project as vice president of the Chinese Academy of Sciences and president of the Graduate School of Science of China at the time. In September 1986, Professor Yan Keats wrote in the preface to the "CUSPEA Memorial Book": Now is one of the best periods for the development of China's economic and political situation since the founding of the People's Republic of China, and the country urgently needs a large number of young people with ambition and courage to devote themselves to the construction of the four modernizations. Therefore,I earnestly hope that CUSPEA students can also become a backbone in this regard, and return to China as soon as possible to participate in the construction of the motherland. Needless to say, our economy is not developed enough, and our working conditions are still far behind those of developed countries. That's why we need to struggle and overcome. Professor Yan's remarks are enough to see how much the country had expectations for these students who went to the United States through the CUSPEA program at that time, and how much they hoped that they would return to China after completing their studies and participate in the tide of building socialist China. After understanding this history and the background of Sun Weidong's study abroad, we can more accurately understand why today's Chinese netizens are so unwelcome to see Dr. Sun, who abandoned the motherland. 
Of course, Sun Weidong's case alone is far from arousing anger on the Internet. There is a deeper connection to this.
In modern China, poverty and weakness have been exhausted, and countless people with lofty ideals have explored the way to save the country and become strong. Among them, studying abroad is an important way to learn from Yi's long skills to improve himself. In August 1871, in the tenth year of Tongzhi, the late Qing Dynasty launched the "Young Children's Overseas Program" and established the "Young Children's Overseas Business Bureau", with Chen Lanbin as a member of the Overseas Bureau and Rong Hong as a vice member. Chen Lanbin is responsible for the study of Chinese during the study abroad students in the United States, and Rong Hong is responsible for the children's education in the United States. The ** in the following TV series shows the tragic scene of primary school students studying abroad at that time, and also shows the grand desire of my Chinese sons and daughters to strive for self-improvement and serve the country with science and technology. When I went to the West, I knew China's plan for self-improvement, and I wanted nothing else. Carry the future of the country and seek the science of foreigners. Go to 70,000 miles for a long time, say goodbye to the country of your motherland, and have no regrets.
In just 49 words, I still cry when I read it today. This is my Chinese son and daughter who strives for self-improvement!
Since then, countless sons and daughters of the Chinese nation have left their homes and embarked on a long road to the West to seek a way to save the country. These historical imprints are deeply imprinted into the hearts and minds of the Chinese. Especially later, the deeds of Qian Xuesen and other ancestors who came back to serve the motherland after all kinds of difficulties and obstacles touched hundreds of millions of Chinese people, and at the same time made us place more expectations on public students. In the hearts of countless Chinese, they always believe that public students should come back to build their own country.
However, in recent decades, too many of us have lost too many outstanding talents, and too many of us have lost the spirit of contract, abandoned their motherland, and chose to join the United States and other developed countries. Among them, although there are problems with our talent system, there are problems with our management, and there are problems with insufficient scientific research funds and equipment. But the most important thing is that the heart of the child has changed color, they have abandoned their country, they have abandoned their parents, families, and the country and nation in order to achieve better personal development and enjoy a better living environment.
This is unacceptable to us.
After understanding the historical destiny of the country and the people's heart complex, everyone will be able to better understand why netizens are so disgusted and indifferent to Dr. Sun Weidong. Because, he broke everyone's hearts first. It was he who abandoned his compatriots first, so that everyone had different sympathy for him. Just yesterday, a news was posted on the Internet that a publicly-funded normal graduate in Fujian broke the contract. He Mouqing, a teacher at Putian No. 9 Middle School in Fujian, left the teaching team for violating the "Putian City Publicly-funded Normal Student Training and Employment Agreement" and worked in the school before the service period expired, and finally returned a total of 74.75 million yuan. 
Because there is an agreement, and it is also in the country, it is easy to deal with no matter what.
In 2022, the Ministry of Education issued the Notice on Doing a Good Job in the Employment of Publicly-Funded Normal Graduates of Normal Universities Directly under the Ministry of Education in 2023, clarifying that all provincial-level education administrative departments should strengthen the performance management of publicly-funded normal students, and ensure that publicly-funded normal students strictly fulfill the publicly-funded education agreement for normal students, except for those who are unable to complete their studies due to major illnesses or are not suitable for teaching and are designated by the provincial-level education administrative departments** Except for the termination of the agreement after the examination and confirmation of the first-class hospital in accordance with the physical examination standards for teacher qualifications, the contract shall not be terminated before the graduation of the new public-funded normal students. If a publicly-funded normal student is unable to perform the agreement due to special reasons, it shall be approved by the provincial education administrative department where the student is located, and the public-funded education fee and liquidated damages shall be refunded in accordance with the regulations, and the public-funded education agreement shall be terminated. Seeing this notice from the Ministry of Education and this case in Fujian, let's compare Sun Weidong's behavior. Excuse me, do such people still deserve our sympathy?Can we still let such a person return to China?
No, absolutely not. The state did not sue him and make him lose money, and the righteousness of the people has been exhausted.
So, please shut up your mouths if those who are still supporting and sympathizing with Sun Weidong on the Internet, and scolding us netizens for being cold-blooded and ruthless.