Literature belongs to one of the humanities, and keeps pace with philosophy, religion, law and politics at the top of the social structure. It originated from human thinking activities. The first thing to appear is oral literature, which is generally a lyric poem that can be sung with music. All the works written in words in the pre-Qin period in China were collectively referred to as literature, and literary works were gradually listed separately after Wei and Jin Dynasties. The classification of European traditional literature theory divides literature into three categories: poetry, prose and drama.