The second and third chapters of the poem reflect the musical characteristics of poetry chanting, enhance the melodious and harmonious beauty of the rhythm, and make the emotions expressed more and more intense. "Cang Cang" in the first chapter, "Desolate" in the second chapter, and "Cai Cai" in the last chapter describe the color of the reeds from pale green to desolate blue to white, exaggerating the desolate atmosphere of late autumn. It highlights that the poet's environment at that time was very cold and his mood was very lonely. The transformation of white dew into "frost", "weixi" and "weiji" depicts the gradual change of morning dew into frost and then into autumn water. It vividly depicts the trajectory of time development and illustrates the poet's dawn. Then we came to the riverside and stayed there until the sun rose in the east. Just imagine how anxious and melancholy he must feel when he wanders alone in the cold and lonely wilderness for a long time, facing the vast autumn water, waiting for no one to see or find anyone! When describing the location of the beautiful lady, because of the "square" and "mei" The change of the three words "涘" and "涘" truly depicts the activities and psychological image of the Yiren waiting for the poet on the other side and the poet's desire to meet the Yiren. Such writing greatly broadens the artistic conception of the poem. In addition, the changes of "Chang", "Jiu", "You" and "Yang", "Di" and "沚" also describe his difficulties in finding his lover and his mood in wanting to see his friends from different roads and directions. An urgent situation. If you connect and taste the changing groups of words used in the three-chapter poem, you can better appreciate the meaningful and honest meaning of the poem.