Is it infringement to cite other people's patents in academic research?

First of all, if he only applied for a patent in the United States, but not in China, it will definitely not infringe.

Secondly, if he also applies for authorization in China, what is your purpose? It seems that your statement is only for academic research, so it can be used without infringement. (According to Paragraph 4 of Article 63 of the current Patent Law)