1. During the reign of Emperor Wu of the Han Dynasty, there were three halls, namely, Qinxian Hall, Xianchu Hall and Jieshi Hall, which recruited talents.
2. In the Tang Dynasty, Wentong Pavilion (namely Zhao Wenting and Xiuwen Pavilion), Jixian Temple Academy and Historical Pavilion were the three major pavilions. Hong Wen is a province, in charge of school books, teaching students apprentices, and Jixian is a big book province in China, in charge of publishing books and compiling articles; The History Museum also belongs to Zhongshu Province and is in charge of compiling national history.
In Song Dynasty, Zhao Wenting, Jixian Academy and Historical Pavilion were three pavilions. In addition, there are three libraries, namely, Wenguang, Imperial College London and Law School, which are central educational institutions and are also called three libraries.