During the reign of Emperor Zhang of the Han Dynasty, the masters of classical Chinese were called to meet in Baihuguan, Luoyang to discuss the similarities and differences of the Five Classics. Emperor Han Zhang personally ruled. After the meeting, Ban Gu compiled and recorded Bai Hu Tong Yi, the content of which was mainly based on Dong Zhongshu's thoughts, but it also absorbed the opinions of the ancient Chinese school.
As an official classic, this book is published in the world, systematically absorbing the theories of Yin-Yang, Five Elements and Divination, and mixing it with the Confucian classics in modern literature.
In the fourth year of Xiping, Cai Yong and others wrote the "Xiping Shijing", which is a positive version of the Five Classics written according to the White Tiger View Conference.