The earliest excellent musical aesthetics monograph in ancient China is

Yue Ji is the earliest and relatively complete theoretical work of music aesthetics in ancient China. It summed up the music aesthetics of Confucianism in the pre-Qin period, and became the principle of music aesthetics and the standard and principle of music creation in the later feudal society, which had a far-reaching impact on the music development of China for more than two thousand years.

Overview of Yue Ji: 23 or 24 original articles, with existing 1 1 articles, kept in some chapters of Book of Rites Historical Records. There are many arguments about its author and completion date. One is written by Confucius' disciple Gongsunni, and the other is written by Liu Xiang and Liu Xin. Either way, the academic circles think that the book mainly reflects the ideology of the pre-Qin era. His works, represented by Music, systematically summarized the aesthetic thoughts of the whole art field in the pre-Qin period, mainly including four aspects.