The first stage: from 1880 to 1899, Liu's father died young. Due to the mother's housekeeping and teaching, Liu's filial piety and kindness were cultivated. As a child, due to Chen's teaching, Liu became interested in bibliography and China history.

The second stage: from 1900 to 1927, Liu joined the Compilation Bureau, studied with Miao, who advocated political reform, and went to Japan to study with him. He deeply realized the importance of education, so he wrote A Brief History of Past Dynasties as a teaching material. 19 15, Liu returned to Nanjing to teach China literature and history in Nangao, and Nangao was merged into Dongda University. Liu is a professor of history, teaching China cultural history, Southeast Asian history, Indian history, etc. And hosted Xue Heng with Wu Mi and others. 1926 coincided with the student tide of "supporting Guo and rejecting Hu" in Dongda University. The Liu family opposed President Guo Bingwen and the student movement, so they left Dongda University.

The third stage: from 1927 to 1937, Liu became the Jiangsu Provincial Sinology Library, sorting out old books, cataloguing, sorting out 36 volumes of books in the Sinology Library, editing the annual magazine of the Sinology Library and writing a brief history of the Sinology Library; In the September 18th Incident, Nanjing was in a hurry, and the Liu family went around asking the government to collect books. However, the government did not have enough space to collect books, so the books were burned by the war, saying that they were "not fully responsible for the culture of the motherland."

The fourth stage: from 1938 to 1945, Liu Qu visited Chongqing Central University. Because of Liu's reputation in the school, he was invited to be a tutor of the Institute of History, and completed the Essentials of National History during his teaching.

The fifth stage: 1946- 1956, Liu returned to Nanjing, served as the director of the National Studies Library and the editor of the National History Museum, sorted out the historical books scattered after the war, and succeeded as an academician of the Academia Sinica; After 1949, he served as the cultural relics management Committee to organize local museums.

Liu Yizhi is a famous historian, educator, calligrapher and librarian. 1948 won the honor of being the first academician of academia sinica. The academic salary was passed on to the Ganjia School, which integrated the modern new thoughts of the world and learned from China and the West. Advocating that "the importance of history lies in upholding justice." History teaches politics and religion to show the changes in the world, not to save people. In the 1920s and 1930s, historians Chen Yuan and Chen Yinque who taught in the north were also called "Nan Chen".