How does Mei's Cold Spring express the author's feelings?

Mei Yao Chen in the Northern Song Dynasty with chilly spring.

In spring, the sky is overcast and the clouds are getting thinner and deeper.

Butterflies are cold, their wings are broken, flowers are cold and unhappy.

The green curtain of the sub-tree moves, to Shan Yu.

You can't find many diseases without seeing the scenery.

Poetry expresses the author's inner feelings and sadness. The poet used the scenery to express his feelings, and the first couplet pointed out the seasonal characteristics of chun yin in the Ming Dynasty, which was the expression of the poet's mood. The word "unhappy" in couplets is a pun, which is meaningful and empathetic. The word "disease" in couplets not only describes the physical condition, but also reveals the poet's mood at this time.