Why is menstruation called auntie?

　　In ancient times, it is said that it was the Han Dynasty. There was a beautiful little girl named Jia'er. She was twenty-eight years old and it was a good time to get married. However, the girl's life was not very good. Her parents died early and she lived with her aunt's family. There were many matchmakers coming to the house, and girls would always be more cautious. This girl fell in love with a scholar named Li.

　　Li Shusheng also admired Miss Jiaer very much. At that time, people were very traditional. After two people got engaged, it would take a while before they could get married, unlike today's bunch of brats who live together at a young age. But after all, young people are always in love with each other, so Li Shusheng will always find some excuse to secretly see Miss Jiaer, but there are not many opportunities for the two of them to be alone together, just holding hands, let alone kissing.

　　Of course, Li Shusheng is also a passionate young man, and of course he wants to kiss the girl he likes. However, in ancient times, women were busy with housework at home, and this aunt was often busy at home. Naturally, the little lover was sneaky and afraid of being seen and making irresponsible remarks, so he would often hear the footsteps of his aunt when he wanted to be gentle for a while. The girl's family was naturally more vigilant. When she heard the footsteps, she would say, "Auntie is here, you should hide quickly."

　　As time went by, Li Sheng became unbearably lonely and found a matchmaker. The girl finally got married. Unfortunately, that day happened to be the day of the girl's month. Entering the bridal chamber, hey, this man's essence has not changed since ancient times, haha. The scholar hurriedly wanted to enjoy the joy of clouds and rain. It's a pity that the day was unlucky. Women in the past were so reserved that it was difficult to speak directly. This girl was also smart, so she just said that her aunt was coming tonight. The scholar was also smart and knew that there must be something unspeakable, but it was hard to ask anything, so he just solved it by himself.

　　Since then, there has been this customary saying. When Li Jia is inconvenient (during her period), she will say that her aunt is here.