The structure of the poem is simple, and three chapters overlap; The poet's description of the scenery in Yi Ci shows people's different feelings delicately. Sorrow is a woman's icy feeling; When it rains, you can hear the sudden rain at night; Like the darkness of night, it also shows the scene in front of us visually.
The poem subtly expresses the movement of tense and the gradual development of modality while changing the meaning. There is a folk saying that "the cock crows three times, and the three chapters of Zheng Feng Storm overlap, which may be based on this customary law. With the development of tense, pregnant women's mentality of "seeing a gentleman" has gradually improved. "Neither cloud nor Hu is foreign", with a rhetorical question and a warm tone, said that his mood is great; "Clouds can't cover up", which is a disease of accumulated thoughts. The more so, the deeper the tone; In the last chapter, "Hu Yun doesn't like it", the joy is hard to hide, even loudly. The weather changed from darkness in the night to darkness in the morning, the cock crow changed from low voice to high voice, and the emotional change changed from first sight to conviction and shouting.