I opened a shop selling hairpins, and asked for a literary and ancient name, preferably related to hairpins.

Although it is still silky black in the morning, it turns into snow at night. It is better to call it moss snow, or it is covered with snow.

Chaitoufeng (but I personally think this name is very good, even if there are many on Taobao, you have to add some prefixes if you want to use it, such as Chaitoufeng, Changan Chaitoufeng ...)

Lock clear autumn/clear autumn lock (never searched)

Step by step (step by step)