Song and Fu were both styles in ancient Chinese literature, but their meanings and uses were slightly different. Fu was a type of verse in ancient China, usually in the form of a four-character or five-character poem. Its rhythm and meter were similar to that of a four-character or five-character poem. The content of Fu was mostly about natural phenomena, historical events, biographies, etc. It could also express the author's thoughts and feelings. The literary nature of Fu was strong and was regarded as a formal literary form. Song was a lyrical prose style, usually in the form of seven characters or regular poems. Its rhythm and meter were similar to poetry. The main purpose of a song was to express the author's emotions and thoughts. It was used for lyricism, narration, criticism, and so on. The literary nature of song was weaker than that of Fu, but it was also an important form of literary creation. Therefore, although songs and Fu were both literary works, they were different in form and content, and their uses and literary nature were also different.