What is the poet's homesickness in Yu Guangzhong's Four Rhymes of Homesickness? What rhetoric does the poet use to express himself?

The poet chose four images: Yangtze River water, begonia red, snowflake white and wintersweet fragrance. The author expresses the poet's deep feelings for the motherland, which are connected by brothers.

The taste of drunkenness

It's homesickness

The burning pain of boiling blood

This is the pain of homesickness

Waiting for a letter from home

It's a homesick wait.

Mother's fragrance

It's the fragrance of the country.

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Rhetorical device

Yu Guangzhong's homesick poems mainly use metaphor, personification and parallelism.