There are three chapters in the whole poem, and only a few words are changed in each chapter, which not only plays the artistic effect of repeating chapters and sentences, chanting repeatedly, singing three times and sighing three times, but also plays the role of constantly promoting poetry. From "The White Dew is Frost" to "The White Dew is Not Wet" and then to "The White Dew is Not Already", this is the passage of time, symbolizing the long-term gaze and pursuit of the lyric hero; From "on the water side" to "on the water side", then to "on the water side", from "in the middle of the water", to "on the water side" and then to "on the water side", this is a change of location and symbolizes the elusive Iraqi people. From "the road is blocked and long" to "the road is blocked and broken" and then to "the road is blocked and right", it is the repeated rendering of the difficulties in the pursuit process that highlights the indomitable spirit of the lyric hero. Repeating chapter by chapter and advancing layer by layer is a common form of folk songs in The Book of Songs. The poem also skillfully uses words such as "gray" and "sadness" to make the whole text have both sound and emotion.