In folk customs, it is taboo to have a haircut in the first month, and it is considered unlucky to have a haircut in the first month. The haircut is also exquisite. If you don't pay attention, it may affect your fortune.
It is a kind of "nostalgia" not to shave your head in the first month. That is to say, when the Qing army entered the customs, it forced the Han people to shave their heads and keep their braids, but the Han people did not shave their heads in the first month because they were worried about their motherland to show that they would not forget it.