2. Establish teaching studios and karaoke bars;
3. Words are more flexible, more popular and more easily accepted by the public than metrical poems;
4. The development of the imperial examination system formed a huge group of civil servants, and the literati in the early Song Dynasty inherited the wind of five pronouns, which was more attractive (graceful school in the early Song Dynasty);
5. In the Song Dynasty, there were Khitan and Jin in the north and Xixia in the northwest, and ethnic contradictions were prominent, especially in the alternate period of the Song Dynasty. The shame of Jingkang has always been engraved in the hearts of Han people, eager to restore the desire of the Central Plains to become a patriot, and words can better express it. (Bold school) The land fell and was displaced, lamenting the fate of life. (graceful school in the early Southern Song Dynasty, represented by Li Qingzhao)