The flowers in Shan Ye are idle in the drizzle, and the yellow flowers are alone. Where did this come from?

This is a couplet written by Yang Shoujing, a calligrapher in Qing Dynasty. The specific explanation is as follows:

Qian Yin: Yang Shoujing Seal, Fifty Years Later: Qian Zhi: Guangxu Jihai February, Yang Shoujing. Interpretation: Flowers in Shan Ye are idle, while drizzle and yellow flowers are lonely.