At that time, neither Li Zhengdao nor Yang Zhenning could make this contribution independently. They can't leave anyone. Who is the "first person" is not important. Yang Zhenning and Li Zhengdao cooperated to complete the "parity non-conservation". With this contribution alone, they immediately won the Nobel Prize in Physics. At that time, Wu Jianxiong should have won the prize at the same time, but because she was a woman, she was influenced by gender bias, so it was very regrettable. "Parity is not conserved" is a very important discovery, which overturns the scientific knowledge of the past 30 years. In order to compete for the "first person" of this discovery, Li Zhengdao and Yang Zhenning had some contradictions.

What kind of person is Li Zhengdao? I once wrote a letter to Zhou, vice president of China Academy of Sciences, saying that there are many overseas Chinese. These people don't know China, and they all have selfishness. Mo Wei said that as far as I know, only two of these China scientists are completely selfless. Only these two people are committed to the welfare of China. They are Yang Zhenning and Li Zhengdao. Mo Wei also said that Yang Zhenning and Li Zhengdao have always been concerned about China's overseas development and praised China all over the world. At some international conferences, when Yang Zhenning and Li Zhengdao were attacked in China, they angrily withdrew from the protest.

However, since Li Zhengdao won the Nobel Prize, there has been no major academic innovation and it has gradually become unremarkable. Yang Zhenning thinks that he is "an extremely intelligent physicist, with strong absorption ability and very hard work." But insight and mathematical ability are slightly inferior. "

On the other hand, Yang Zhenning has gained more and more strength in the fields of cold atoms, condensed matter, statistical mechanics and field theory. 10 The achievements of the Nobel Prize winners all come from this, which made Yang Zhenning famous.