Guo Maoqian (104 1 year-1099) was a programmer in Yunzhou (now Dongping, Shandong Province) in the Northern Song Dynasty (History of the Song Dynasty, Volume 297, Biography of Power). For Laizhou, he was sentenced to be the grandson of the state power and the son of Dr. Guo Yuanming. In the seventh year of Yuanfeng (1084), Zongshen joined the army as Facao, Henan Province (Volume 59, epitaph). There are hundreds of Yuefu poems handed down through the ages, which are valued by academic circles because of their excellent textual research on solving problems. Mulan Poetry and Peacock Flying Southeast are collectively called "Yuefu Double Walls".
Yuefu Poetry Collection divides Yuefu poetry into 12 categories, such as Jiaomiao Ci, Ci, Advocacy Ci, Transverse Blowing Ci, Harmony Ci, Dance Ci, Qin Ci, Miscellaneous Ci, Modern Ci, Miscellaneous Ci and New Yuefu Ci. It is divided into several subclasses. For example, poems with horizontal blows can be divided into two parts: Korean horizontal blows and beam-drum blows. Xianghe songs are divided into six quotations: Xianghe songs, Yintan songs, Pingdiao songs, Qingdiao songs, Hudiao songs, Chudiao songs and Daqu songs. The lyrics of Qing merchants are divided into wusheng songs and western songs. Among these different musical works, Symphony and Sheyan belong to the movements used by the court, and their ideological content and artistic skills are not satisfactory. There are also some works with poor artistic value in advocacy songs and dance songs. But on the whole, most of the poems it collects are excellent folk songs and poems written by literati with Yuefu as the old theme. Among the existing collections of poems, Yuefu Poetry is an important collection that was created earlier and brought together all kinds of Yuefu poems in past dynasties. There is 100 volume, which is the most complete collection of Yuefu songs. Yuefu poetry is the essence of folk songs in Han, Wei, Southern and Northern Dynasties.