Taking Delighting in Rain on a Spring Night as an example, this paper discusses the artistic achievements of Du Fu's rhythmic poems.

Rhyme plays an extremely important role in Du Fu's poems. The achievement of Du Fu's metrical poems lies in expanding the scope of expression of metrical poems. He not only writes about entertainment, nostalgia, travel, feasts and landscapes with Chang Song poems, but also writes about current events with Chang Song poems. It is difficult to write current affairs with metrical poems, but Du Fu can use them freely. Du Fu writes metrical poems freely, changes as much as he can, conforms to the law without seeing the shackles of metrical poems, and is in neat opposition without seeing the traces of antithesis. For example, there is such a poem in Yang Lun's Ascending the Mountain, which is called "The Seven-character Law of Du Ji": "There is a flurry in the sky, apes crow and birds crow, blue lakes and white sands, and birds crow at home. The endless trees are rustling leaves, and the Yangtze River is rolling unpredictably. Li in the sad autumn scenery, a wanderer all the year round, lives alone on the high platform in today's illness. Bad luck has a bitter frost on my temples, and heartache and fatigue are a thick layer of dust in my wine. " The whole poem is also very precise and elegant in tonal sentence patterns. Eight sentences are all right, so is the first sentence. Strict antithesis is concealed by the fluency of the image, and strictness becomes sparse.