What do you think of physicist Yin giving up China citizenship and immigrating to the United States?

As for whether he will return to China. This is purely his personal choice. After all, people have been abroad for decades, as if their lovers are foreigners. Moreover, there is no soil for survival in China, and even foreign professors in some schools study this.

Everyone has his own ideas, at least Yin is doing research in the United States, and the platform of Harvard can't bury his talent. Compared with Zhang, a student who can only wash dishes, fry hamburgers and process subway, and go to a community college to teach the addition and subtraction of scores, it is already a human comedy.

As the saying goes, "the people in the territory do not take the government boundary, the country does not take the risk of mountains and rivers, and the world does not take advantage of war." Not having China nationality does not mean unpatriotic. Another example is "Science has no national boundaries". Maybe the atomic bomb has national boundaries, and mask aligner has national boundaries, but this one he studied really has no national boundaries.

Finally, nationality has nothing to do with whether you care about the development of backward areas or not. People from many other countries in the world have been helping China to develop and study China. Although Qiu Chengtong is an American, he has always been concerned about the development of Chinese mathematics education and research, and presided over the research institutions and conferences of Chinese mathematics education.