1. One of the ancient Confucian classics in China. During the reign of Emperor Xuandi in the Western Han Dynasty (73-49 BC), Dade and Dai Sheng compiled two collections of essays from various etiquette works before the Qin and Han Dynasties, which were called "Dade Li Ji" and "Dai Xiao Li Ji" by later generations respectively, and the latter was generally referred to as "Li Ji". The Book of Rites is an important work to study the social situation, laws and regulations and Confucianism in ancient China. It recorded the feudal patriarchal ideology and its system in the early Han Dynasty.
2. Poets in the late Tang Dynasty: refers to the poets in the middle and late Tang Dynasty who created with wandering mood and tired attitude and carefully scrutinized and tempered every word. Representative figures are Jia Dao, Yao He, Meng Jiao, Zhou He and Liu Deren.
3. Yongjia Siling: The poets of the Southern Song Dynasty, Xu, Ling Yuan, Ling Shu and Ling Xiu, all flaunted the poetic style of the prosperous Tang Dynasty, opposed the Jiangxi poetic school, and deliberately studied the poetic styles of Tang Jiadao and Yao He, forming an original school. Because all four of them are Yongjia people, there is a word "Ling" in the font size, which was called "Yongjia Siling" at that time. His poems are full of fresh descriptive words, but they are poor in content and narrow in artistic conception.
4. Old Dream of Red Mansions: refers to all comments, comments, poems, research and textual research on Dream of Red Mansions before the May 4th Movement. The more important schools of Old Dream of Red Mansions are criticism and research. The representative figures of the critical school are Wang, Wang, Yao Xie in Qing Dynasty. Suoyin School: The representatives are Cai Yuanpei, Wang, Shen Ping-an.