The reasons are as follows:
1. Description of artistic conception: The description of artistic conception in this poem makes people feel the poet's emotions and thinking about the times.
2. Expressing concern for the country and its people: The business woman in the poem does not know the hatred of the country's subjugation, but still sings "Flowers in the Back Garden". It makes people feel the poet's love and sense of responsibility for the country.
3. Exquisite artistic expression: The poem uses smooth and neat rhymes and rhyme patterns, which makes the poem's phonology beautiful. Through the comparison of scene descriptions and characters, as well as the arrangement of turning sentences, the poem has a compact structure and profound artistic conception, giving people the enjoyment of beauty and space for thinking.