How to name ancient classes?

Spiritual rain, from "Poetic Style": "Spiritual rain is zero";

Lan, excerpted from Nine Songs of Chu: "Chunlan Qiuju will last forever."

Sound dust, taken from Xie Zhuang's Yuefu: "Beauty walks in the dust, and there is a bright moon thousands of miles away."

I hope I can help you, and I wish you better and better remedial classes.