Letters from Zeng Guofan is a collection of Zeng Guofan's letters, which was written in the middle of19th century, during the Xianfeng period of Qing Dynasty. "Letters from Zeng Guofan" records Zeng Guofan's career in Hanyuan and martial arts from 30 years of Qing Daoguang to 30 years of Tongzhi 10, with nearly 1500 volumes. The content involved is extremely extensive, which is a vivid reflection of Zeng Guofan's main activities and the way of governing politics, family and learning. Zeng Jiashu's writing is calm, free in form, free in thought and writing, full of true knowledge and kind words in plain daily life, and has strong persuasiveness and appeal. Although Zeng's works are few, only one family letter can reflect his knowledge and moral cultivation, thus winning the reputation of "the highest generation of moral articles" and becoming the last spiritual idol of China feudal society.