Rhythm is an important part of the beauty of poetry and music, which is usually manifested in regular changes in the length, pitch, speed, and speed of sounds. There is a corresponding relationship between the rhythm of the poem and the poet's inner emotional changes. Guo Moruo pointed out in his discussion of rhythm: "Lyric poetry is a direct writing of emotions. The progression of emotions has its own wave-like form, either first suppressing and then rising, or first rising and then suppressing, or alternately rising and falling. This is discovered to form a poem. Rhythm. So rhythm is its shape and its life. "In ancient and modern times, there is no poem without rhythm, because without rhythm, it is not poetry.