The source of the Book of Rites: "Stuart chooses scholars, and he who climbs up is called a gentleman.
Zheng Xuan's Note: "Courtesy can help you study in university.
One of the essays of Yongming Nine-year-old Scholars in the Southern Dynasties: "Doctor Zi, choose a name for further study and use a guest king.
People's Education, No.8, 1980: "At present, it is beneficial for young people who want to continue their studies and for the country to get a group of graduates with certain quality soon.
In the Southern Dynasties, Qi wrote "The Nine-year Policy of Yongming": "Zi Dafu chose his name for further study, used three points, Chen San, and led four subjects.