1. Poetry originated from ancient social life. It is a rhythmic and emotional language form produced by labor production, sexual love, primitive religion, etc.
2. "Shang Shu Yu Shu" records that poetry expresses ambitions, songs express words, the sound is eternal, and the rhythm is harmonious. In the early days, poetry, song, music and dance were integrated. Poems are lyrics, and they are always sung in conjunction with music and dance in actual performances. Later, poetry, song, music, and dance developed independently and became independent entities.
3. Songs and poems are distinguished based on whether they are in music or not. When they are in music, they are songs, and when they are not in music, they are poems. Poetry is derived from song and is a language art, while song is a kind of music literature with a long history.
4. The Book of Songs is sung to music. Strictly speaking, it is a song. Because of this, the Book of Songs is called by scholars a symbol of the maturity of our country’s musical literature.