How does Yu Guangzhong's Homesickness promote poetic expression with the help of the change of time and space? Where is the structural beauty of poetry?

The poet skillfully uses poetry to express his nostalgia for his motherland and hometown. The author compares homesickness to stamps, boat tickets, graves and straits according to the changes of time and space, and takes this as a carrier to turn thick abstract homesickness into tangible objects, which is easy to understand. These four carriers are the representatives of homesickness, the deepening of the author's feelings, the further enhancement of homesickness and the further sublimation of the theme.

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Homesickness presents the beauty of diversity and unity in structure. Unity means relative balance and symmetry; Paragraph patterns and sentence patterns are relatively neat, and paragraph by paragraph and sentence by sentence are relatively harmonious and symmetrical. Change is to avoid unification going to extremes and pursue that vividness and fluidity.

And the beauty of vitality. Homesickness has four paragraphs, each with four lines, and each paragraph is quite balanced and symmetrical. However, the poet pays attention to the change and adjustment of long sentences and short sentences, which makes the face of the poem neat and uneven. The musical beauty of Homesickness is mainly manifested in the beautiful melody of reciprocating, singing and sighing. The four repetitions of "homesickness is-"and "here" ... there (in the head) ",together with the overlapping words of" small ","narrow ","short "and" shallow "in the same position in the four paragraphs, make the whole poem depressed, such as complaining. The use of quantifiers such as "one piece", "one piece", "one side" and "one bay" not only shows the poet's language skill, but also strengthens the aesthetic feeling of the whole poem.