Duality in form does not necessarily represent opposition in meaning. For example, in Li Sao, "The stars are scattered and broken, and there is no one in the lonely moon." From the formal point of view, the stars and moonlight are dual, but they are not opposite in meaning. In this sentence, the poet connects natural scenery with human emotions through duality, forming a profound expression.
Duality in poetry is not only the collocation of words, but also has far-reaching significance. For example, in Su Shi's "Jiangchengzi", the poem "Young people listen to the rain platform, and red candles faint their accounts", and listening to songs on rainy nights is the antithesis in the poem, but it also implies the contradiction between childhood dreams and realistic desires, and conveys the sadness and profound understanding of life for a long time. Therefore, antithetical poems are not only the embodiment of aesthetic feeling, but also the expression of the author's thoughts, feelings and life realm.