I am a lover of classical literature. Personally, I think that the common idea in poetry is: 1, willow, which is pronounced the same as "stay", so the ancients had the habit of folding willows to send friends to express their nostalgia; Many farewell poems have this intention;

2, sunset (sunset), more common in sad poems;

3, Qiang tube, silk and bamboo and other musical instruments, expressing sadness and the like;

4. Apricot, banana, pear, plum, bamboo, hibiscus, osmanthus and other plants.

5. Goose (lone goose, swan goose) and ape