There is a folk saying: "If you don't get a haircut in the first month, your uncle will die", so you don't get a haircut in the first month. There is also a saying that "parents are skinned": the ancients thought that their children's skin and hair were given by their parents, so in the past, the elderly would choose a distinctive "auspicious day" to have their hair cut. In traditional customs, the first month is called "Yue Ji". Farmers will thank God for keeping the earth warm like spring, so people will not choose to have their hair cut in this year. They think that using their brains in "Yue Ji" is not good for their development in the coming year.

In ancient times, people attached great importance to hair, and people had the habit of cutting hair at a specific time. For example, in the Book of Rites, it is recorded that "at the end of March, men and women fell in love on a certain day", indicating that at least as early as the Han Dynasty, China people had certain requirements for shaving time.

In Qing Dynasty, Pan Rongbi's book Jing Di Sui Sheng recorded that "if you don't shave your head in May, you will be afraid of harming your uncle". It can be seen that in Qing Dynasty, "shaving your head in May" was actually associated with "harming your uncle".

There are countless such "taboos" among the people in our country. For example, "Eight Records of Respect for Life" even stipulates that when a husband and wife cannot share a room or even "ask questions". It can be seen that "cutting hair is a common superstition in ancient times."