A group of prosperous and beautiful dreams floated around like clouds, and dancing flowers drifted with the tide.

This is a sentence from A Dream of Red Mansions. "Dream of Spring" is about Shi Xiangyun, and the last sentence refers to Lin Daiyu, the "flower soul".

Daiyu has buried flowers. At that time, Baoyu said that he would abandon the flowers and go with the water, but Daiyu thought that this would eventually defile the flowers.

"Flying Flowers Chasing Water" and "Qin Fang" coincide with each other, suggesting that Daiyu's fate is declining.