2) I used to go by myself, and Yangliuyiyi. Today, I came, and it was raining. (Returning, with nostalgia, the poet used willow (sound to leave a gentleman).
Rain and snow (stay) instead of their attachment.
3) et al. This is the first example of China's poetry. Empress Dayu of Xia Dynasty is waiting for her return.
4) Zigui, (Zigui is a kind of medicine, and Zigui is used in many places to imply the meaning of return)
Feng Haichao, the swallows return to their nests. The wild geese return to the south, and these natural phenomena euphemistically express the meaning of returning.
6) Leaves fall to the roots.