What was the special characteristic of the second sentence of this poem? Please briefly analyze the effect of the poem.

This sentence came from the "Touching Fish·Yanqiu Ci": ```text If the love between the two is long, how can it be morning and evening? ``` This sentence had the following characteristics: 1. Use the antithesis sentence: In this sentence,"two feelings" and "if" are symmetrical structures, and "long" and "time" are also symmetrical structures. This kind of antithesis could enhance the sense of rhythm and rhythm of the poem, making it easier for the reader to remember and understand. 2. Rhetoric: In this sentence, the author used the rhetoric of "Yanqiu Ci" to express the theme of long-lasting love and never abandoning by linking "Yanqiu Ci" and "two emotions". Yanqiu Ci was a common rhetorical technique in ancient China. It enhanced the poetic and emotional meaning of poetry by linking place names with love. 3. Using metaphor and personification: In this sentence, the "two emotions" were compared to "wild goose hills", implying the connection and importance between the two. At the same time,"Yanqiu" was also personified to show the loyalty and love of the wild goose. This kind of metaphor and personification could help readers better understand and feel the emotions of the poem. 4. Prominent theme: This sentence highlights the theme of long-lasting love and never abandoning by connecting "two feelings" and "wild goose hill". In this way, the author brings the readers into the emotional world of the poem, allowing the readers to feel the theme and emotions of the poem more deeply. To sum up, the writing style of this sentence has the characteristics of antithesis, rhetoric, metaphor and personification. It can enhance the rhythm, poetry and emotion of the poem and highlight the theme of long-lasting love and never leaving.