Why is the image of "ape" in China's ancient poems sad and sentimental?

Reason:

In ancient poetry, feelings of parting and bitterness are written with the cries of apes. This phenomenon stems from many touching legends created by the ancients through association and imagination on the basis of the whistling characteristics of apes.

In addition, there are some ancient poems that use the eating habits of apes to write a sad life and express their grief. Using the light spirit characteristics of apes to write martial feelings. Turn the ape into a gentleman and express your admiration for the loyal monarch. Using the active characteristics of apes, write people's mood and Zen state, with peace of mind and completely eliminate other thoughts. Use the similarity between apes and people to write satire on superficial people.

Extended data

Use apes to express the poet's sentimental poems

1, and then in the fifth month, I couldn't help it anymore. I tried to listen to the monkey in your high sky. -(Tang) Li Bai's Long March

When the water rises in May, the piles don't touch each other, and the apes on both sides of the strait crow to the sky.

2. Xie An is still there, singing and rippling. -(Tang) Li Bai's Dream of Climbing Mount Tianmu

The place where Xie Lingyun lived is still there today. The clear lake is rippling and apes are singing.

3. The monkey came down from the mountain and pestered me. -(Tang) Liu Changqing's New Year's works

The apes in the mountains are dying with me, and the willows on the river are sad with me.

In the sharp wind from the vast sky, apes are sobbing, and birds fly home on the clear lake and white beach. -(Tang) Du Fu's Ascending the Mountain

It is sad for apes to cry when the wind is high and the sky is high. There are birds hovering on the clear river and white beach.