What's the saying about a haircut in May?

There are folk sayings that "my uncle died when he shaved his head in the first month" and "the dragon looked up in February and should have a haircut", which shows that the ancients were quite particular about haircuts. They thought that haircuts in May were bitter in summer.

In ancient people's cognition, May was the day when heaven and earth had intercourse. During this period, the climate is hot and humid, and the appearance and appearance of the five poisons is the most toxic moment. Hair belongs to yang, which is the most abundant place in the human body and can suppress evil spirits.

So the ancients usually didn't cut their children's hair in May. In addition, the temperature rose gradually in May, and all kinds of germs were abused, especially children's resistance was not as good as that of adults. After the hair is cut, the scalp is directly exposed to the air, and it is more likely to be infected with germs when encountering stumbling, so you can get more protection if you don't have a haircut, so there is a saying that you don't have a haircut in May. Solemnly declare: the answer is for reference only, please don't be blindly superstitious.