What is the significance of bamboo willow in ancient poetry?

Bamboo is modest, restrained, rooted, firm, natural and unrestrained, tall and straight, so most of the poems are symbols of "faithfulness", "elegance" and "integrity". Poets use bamboo to express their aspirations and express their feelings, which contains profound philosophy.

Liu: Fold the willow to say goodbye. "Liu" and "Liu" are homophonic, and folding Liu means leaving each other. Therefore, the ancients had the custom of folding willows to bid farewell, so "willows" meant parting. Therefore, in Yulin Ridge, Liu Yong expresses the sadness of parting by saying "Where to wake up tonight, Yang Liuan, where the breeze fades away".