Sentence: Several times the flowering period has passed.
Couplet: Thousands of miles wandering jade rabbit sinks.
The sentence describes that the flowers have gone through several gatherings and scattering, and the flowering period has passed, which makes people feel a little sad. The couplet extends this sadness to a broader context, vividly depicting a jade rabbit wandering thousands of miles away, gradually sinking below the horizon, symbolizing the passage of time and the departure of farewell.
By describing the natural phenomenon of flowering, the sentence expresses the emotion of a short life. The couplet further deepens this emotion, conveying a kind of helplessness and sadness of parting for the passage of time through the symbol of the jade rabbit. At the same time, the combination of the image of the jade rabbit wandering thousands of miles also shows a kind of confusion and helplessness that cannot be mastered by fate.
From the point of view of rhetorical devices, both the sentences and the couplets use symbolic and figurative techniques. The "flowering period" in the sentence symbolizes the transience and impermanence of life, and the "jade rabbit sinking" in the couplet symbolizes the passage of time and the departure of farewell. At the same time, the combination of the image of the jade rabbit wandering thousands of miles also shows a kind of confusion and helplessness that cannot be mastered by fate.