Why was He Biyu forbidden to return to China?

Because I did something wrong to my country.

He Biyu, who is smart and eager to learn, successfully got his doctorate, but at this time, He Biyu is more interested in the scientific research environment and educational environment in the United States. She decided not to return to China for the time being, and decided to stay in the United States to engage in the research work of independent researchers.

It is really a pity that such talents have not returned to the local educational environment to play their role. Although in the field of scientific research and education, scholars often say that "scientific research has no borders and education has no borders", He Biyu's decision should be reconsidered.