It seems that everyone's evaluation of Yang is nothing more than the following:

1. Infidelity: Yang Zhenning resolutely chose to serve the United States in the era of Sino-US war and confrontation, and later became an American citizen, which was disloyal to the country. You know, he went to school at the expense of the state, National Southwest Associated University.

2. Unfilial: When Yang Zhenning became an American citizen, his father, an intellectual of the older generation, could not accept it. He issued a statement disowning him and never forgave Yang Zhenning until his death. Yang Zhenning mentioned in the interview that this is a lifelong regret.

3. Unfair: For my own benefit, I did not hesitate to betray my collaborator Li Zhengdao.

4. Shameless: From the end of 2004 to the beginning of 2005, 82-year-old Yang Zhenning remarried with 28-year-old Weng Fan, a master of translation at Guangdong University of Foreign Studies, which violated the custom of justice and kindness and was suspected of incest. He is simply a shameless man.

The above is for reference only. If it's true, it's really disgusting