Imperial academy is an ancient university in China, which was founded in the Sui Dynasty. Ancient universities were called Cheng Jun and Shandong. Dong Zhongshu: "Five emperors are famous universities, and Zheng Xuan:" Shangdong is a university. "As for the Xia, Shang and Zhou Dynasties, the university is in the east in summer, the Yin Dynasty is in the right, and there are five in the Zhou Dynasty: east in the east, west in the school, south in the school, north in the school, and middle in the school. Imperial academy was established in the Han Dynasty and imperial academy was established in the Sui Dynasty.

In the fourth year of Xianning, Emperor Wu of the Western Jin Dynasty (278), he began to establish Chinese studies, offering wine to the nation, and teaching students with one doctor each. Beiqi was renamed Guo Zi Temple. When Emperor Wendi of Sui Dynasty, he changed to temple science. Soon, sinology was abolished, and only one college was established, saving wine and doctors; The doctor in the college always knows things. Emperor Yang acceded to the throne, changed to imperial academy, and offered a drink offering. Under the system of Tang Dynasty, there were six schools in imperial academy, including Guo Zi, imperial academy, Sixiao, Arithmetic and Calligraphy. There are doctors who are members of the wine supply team and are responsible for supervising the study and giving lectures to the Crown Prince. In the first year of Tang Gaozong Longshuo (66 1), Du Dong was also put in prison. It was renamed Si Chengguan or Cheng Junjian.