People from the army have a good reputation. After returning from Yunnan University to Peking University, Mr. Cao's identity has changed greatly. He served as vice president of Yunnan University, but not in Peking University. He immediately changed from a well-known vice principal in the industry to an ordinary teacher. There must be a psychological gap. Although leading cadres should be modern cadres who can go up and down, how should they face such a change? At that time, Mr. Cao saw a down-to-earth and tireless scientist spirit from an academician around him, asked him for advice, communicated with him, actively adjusted his mentality, and successfully completed the transformation of his mentality. Teacher Cao suggested that when students encounter difficulties in their work in the future, they can seek help from people who are more capable, experienced, capable of leading scientific research teams and reliable people to tide over the difficulties better.