1, University was originally Article 42. In the Song Dynasty, Cheng Hao and Cheng Yi brothers took them out of the Book of Rites and compiled chapters and sentences. The annotations of Great Learning, The Doctrine of the Mean, The Analects of Confucius and Mencius were called "Great Learning" and became Confucianism.

Classic. Jia Zhu rearranged The Great Learning, which was divided into one chapter of Classic and ten chapters of Biography. It is generally believed that the "Jing" chapter covers the words, while the description; "Pass it on" for ten chapters, and then Ceng Zi's meaning was remembered by his master. That is to say,

"Jing" is the words of Confucius and recorded by Ceng Zi; Biography is an interpretation of Jing, which was recorded by students.

2. The university put forward "three programs" and "eight measures". After one chapter, three schemes and eight items are put forward. Eight items are the way to realize the three programs.

3. College is an introductory reading. Therefore, Jia Zhu ranked it first. After the Song and Yuan Dynasties, "University" became the official textbook of the school and the required reading of the imperial examination, which had a great influence on ancient education.