What is cicada synonymous with in classical poetry?

The ancients thought that cicada eating wind and drinking dew was a symbol of nobility, so the ancients often used cicada's nobility to express its noble character. . .

Because of cicada's whine, cicada is often used to express its sad mood or show the chill of autumn.

Cicada and Zen are homophonic, so some poems also have Zen meaning. . .