In the poem "Four Rhymes of Homesickness", why did the author choose the four special scenery of Yangtze River water, begonia red, white snow and wintersweet incense to write? `(*∩_∩*)′

In the whole poem, the poet's passionate homesickness and patriotism are like a red line, which organically organizes four groups of images with national characteristics: Yangtze River water, begonia red, snowflake white and wintersweet incense. The poet chose the "Yangtze River Water" as the first image, which nurtured the Chinese nation and symbolized modern civilization, and extended it to the "Begonia Red", a common sight at home, forming an overall yearning for home and country. Then, from reality to emptiness, he longed for a piece of "snow white" and a piece of "wintersweet fragrance", which constituted an all-round three-dimensional homesickness. The ingenious creation of the situation fully embodies the author's wandering mood of longing for reunification and returning to the mainland. In addition, from the formal point of view, the whole poem adopts the form of one chant and three sighs, and the two long sentences at the beginning and end of each chapter are recited repeatedly, echoing each other from a distance, making the three short sentences sandwiched in the middle more urgent and fully showing the urgency of longing for long sentences. At the same time, it also shows that the poet's wish is not the impulse of young people, but the result of careful consideration, which is the common wish of all China people who long for reunification. There are only two rhymes in each chapter, and there are few rhymes, which shows the dignity of this feeling. Although the reunification of the two sides of the Taiwan Strait is the aspiration of the people, the realistic contradiction caused by the complicated historical relationship has been frozen for three days, so the overall form of the four chapters has not changed, which shows the poet's persistence after sober understanding of reality-deep attachment to the Chinese nation and traditional culture, persistent pursuit, and firm belief and persistence in pursuing the reunification of the motherland as always.