Ci appeared in the late Tang Dynasty and early Song Dynasty and flourished in the Song Dynasty. It was formed on the basis of inheriting and developing poetry. Like modern poetry, there are strict rules on rhyme, level tone, number of words and sentences. The rise of folk culture in the Song Dynasty prompted Ci to become singing literature, so Ci has a epigraph, and the lyrics should be written according to it. Words are generally divided into three categories according to the number of words: poetry, alto and long sound. There are two schools of Ci in Song Dynasty: the bold school and the graceful school.
Qu is a genre of classical poetry that rose after poetry and prevailed after Yuan Dynasty. Qu is the further development of ci. Qu, which is almost as famous as Ci, is also a kind of singing literature with strict format. The tune is called Qupai, but the rhyme and level tone are looser than words, and the language is colloquial. Yuanqu includes Sanqu and Zaju. Sanqu is a oratorio, including poems and sets; Zaju is a kind of opera that can be performed.