To understand the poet’s emotions, we must first analyze the background and look at the poet’s current situation. Distinguish between joy and sorrow.
If it is the emotion of joy: the lotus flowers in the pond become more lush after the rain, and the fish play happily in the water. It expresses the poet's joy after experiencing setbacks and overcoming suffering.
Worrying words: The remaining flowers and fallen leaves in the pond after the rain are extremely desolate. The poet felt lonely and defeated.