According to White Tiger Tong, the school of aristocratic children at that time was called "Biyong", and all aristocratic children had to live on campus when they reached the age of fifteen. The content of study includes poetry, books, ceremonies, music, horseback riding, fencing and so on. One theme is sex education. Li Shimin, Emperor Taizong, personally gave his brothers-in-law a sex education class.

In ancient China, the main ways of sex education for ordinary people were "dowry painting" and "wardrobe bottom". This kind of guiding way of "painting a tiger according to a cat" is an "image teaching aid" for sex education. "Dowry Painting" is actually a volume of eight pictures, 12 different sexual styles. Before a daughter gets married, parents often buy one or two rolls as a dowry, so that her daughter can lie in bed and be enlightened on her wedding night. The "closet bottom" is mostly porcelain, fist-sized, with auspicious melon and fruit shapes and a lid, which hides a pair of promiscuous men and women. Before the daughter gets married, the mother opens the lid of the "wardrobe" to let her daughter know "the way of husband and wife"; It is usually placed at the bottom of the box to ward off evil spirits. Only when children enter the bridal chamber can they be enlightened with such maps or porcelain. Although it belongs to "collapse", it is very useful. It can be seen that our ancestors may not be honest enough about sex, but they will never fall behind.

In ancient times, sex education was mostly carried out by mothers to women, and women were carried out after their mothers and passed down from generation to generation. Therefore, in ancient times, women often knew more about sexual knowledge than men; In ancient times, it was popular that wives were several years older than husbands, so women often taught men a lesson in their sexual life. Of course, sex education in ancient times was definitely not only the "suggestive guidance" of mothers, but also some ancient books about sex for reading, just because ancient people didn't read much, so it was not so popular. When a girl marries, she may be taught by a wet nurse, a stable and a young sister. Sometimes little sisters sing folk songs at the bride's window. These folk songs all have sexual content. Singing folk songs is provocative, but it also has the function of sexual enlightenment.

Adolescence is the cognitive achievement of physiology now, but it doesn't mean that ancient people didn't have adolescence. It should be said that the adolescence of ancient people was advanced.