1. Mr. Hua said that there were "three difficult periods" in his life, which made it difficult for him to engage in mathematics work, namely adolescence, War of Resistance against Japanese Aggression and the Cultural Revolution.

2. "If Hua, like many of his compatriots, stayed in the United States after World War II, there is no doubt that he will make more contributions to mathematics; On the other hand, his return to China is also very important for China's mathematics. It is hard to imagine what the mathematical society in China would be like if he did not return to China. " Selberg, a late mathematician who won the Fields Medal and the Wolff Prize, commented on Mr. Hua's return to China.

3. "Although everyone said that his contribution to the development of mathematics in China after the 1950s was immeasurable, until his later years, his evaluation of himself was sober and objective:' Nothing is important to a mathematician except knowledge.' "Huasu recalled his father's words.

4. Professor Xu Xiuxiu recalled that Mr. Hua once told him, "People have more education than me, and I have to spend twice as much time to remedy my shortcomings, so people work eight hours a day, and I have to work more 12 hours." When Mr Hua first arrived in Tsinghua, he worked longer than that. All these can confirm Mr. Hua's famous saying: "Genius lies in diligence, and cleverness lies in accumulation."

5. Mr. Duan Xuefu said: "During the four years from 1932 to 1936, I was deeply impressed by Hua's talent and diligence. At that time, Hua was young and energetic, and he studied math nervously for more than 10 hours every day. He always gets up early in the morning, seizes every minute before breakfast and concentrates on his work. He soon mastered the essence of mathematics. "

6. The professor believes that Mr. Hua's view of mathematics teaching includes at least the following three points: first, initiative and autonomy (independence) in learning; Second, the combination of learning and research; Third, the choice of mathematical classics and documents.

7. Professor Yan said: "What impressed me deeply and benefited me for life is that the course taught by Mr. (Hua) is the basic content of number theory, but Mr. Hua is not satisfied with the existing mature materials. He often extracts some new contents from some original documents to enrich the course, but never translates the existing materials, so he must repeatedly process them and highlight the methods and ideas."