This is the seal that Wen Yiduo carved for Sun Yutang. Sun is a historian. After Tsinghua University graduated, he went to study in Japan. After the outbreak of the Anti-Japanese War, both of them taught at the National Southwest Associated University, which was a "friend-to-friend relationship". After the victory of the Anti-Japanese War, Wen recommended him to be a visiting professor at Oxford University. This passage is actually a farewell message. It is not unreasonable to regard it as a special form of "letter from home"; However, it is one of the main characteristics of seal cutting that Indian officials record current events and express their feelings with border coins. Most young people don't know much about it now. Mr. Wen left a lot of information on the Indian border. For example, at the end of 1944, he gave a seal to China, and wrote in the side note: "I am strict in age, trying to seal for my brother, and I also wrote an inscription: Stubborn right side, one more chisel, paid contract with Professor Feng Yi, not shabby, not rich, humble in teeth seal, elegant in wood seal. If it is before the war, it is not worth two cents. " It is also a discussion, and I feel a lot. Hua later said in "Brilliant Model of Intellectuals": "I have been cherishing it for decades during my migration. Every time I take it out, I think of a gentleman. The revolutionary friendship of my friends in trouble has become the driving force for my continuous progress. 」

Wen Yiduo ruled India, mainly during the period of National Southwest Associated University. At that time, the Japanese aggressors committed various crimes in China, and the people of China lived in an unprecedented disaster. Although Wen Yiduo is a professor, his salary can't support his family, so he has to list and print to subsidize his family. He said in the letter: "My brother's financial situation is even more difficult to ask. Two years ago, I lived under the threat of cutting off cooking. I started taking part-time classes in middle school, but it was not enough. By friends? It is made up by the listing stamp. Two-thirds of the income recently depends on this. From1April 1944 to1July 1946, Wen Yiduo left over 1400 prints, which shows his diligence in managing prints and his family's economic situation. His seal is of great artistic value. Pujiang Qing specially wrote an example of Professor Wen Yiduo's "Jin Shi Run", calling him "Huang Changjiu Piao, I see him now; "Being an iron pen is pleasing to people, and the world respects its learning." According to Ji Zhenhuai's Chronicle of Wen Yiduo, Professor Pu Jiangqing has specially explained these two sentences, saying: "Huang is a famous sculptor in the Ming Dynasty, a man with a long beard, symbolizing Mr. Wen's demeanor; Cheng is a famous Confucian scholar in the Qing Dynasty and a master of seal cutting. It is most appropriate for him to imitate Mr. Wen. " This article "Professor Wen Yiduo's Examples of Jinshi Rune" was signed by more than ten professors including Mei Yiqi, Feng Youlan, Zhu Ziqing and Pan Guangdan, and became famous for a while.