Hymen is about 1 -2 mm thick. The old idea has always believed that the hymen is complete. Seeing red (hymen bleeding) in the wedding night is a virgin, which shows a woman's purity and innocence. If you don't see red after the same room, it means that your daughter is unfaithful before marriage. In fact, most women can only accommodate one little finger after their first sexual life because the hymen hole is small and round. After the penis is inserted, one or more parts of the hymen will be torn, leading to the first sexual bleeding. Later, with the increase of the number of sexual life, the vaginal opening will gradually increase, and the hymen cracks will be multiple or old. However, there are also a few women whose hymens are very flexible and elastic. Although it didn't break after having sex for many times, it just increased the hymen hole. Some people don't break the membrane until they give birth to their first child, forming hymen marks. Therefore, it is not accurate enough to judge whether a woman has a sexual history only from whether she sees red after marriage or whether her hymen is complete.

Hymen reconstruction is to repair the damaged hymen or rebuild a new hymen through cosmetic surgery. The development of this kind of hymen reconstruction in China is in recent years, even in some developed countries, such as the United States and Japan, it is in the last decade. Although these western developed countries are relatively free and open in sexual life, there are still some people who attach great importance to chastity like China. For example, in some families with cracks after marriage, when there is a family quarrel, the husband will also take the woman's infidelity before marriage as the topic of attack. In Japan, there are also men who use this weakness of their wives as a reason to date outside lovers, and there are also some families who are dignitaries, such as well-known families. If their daughter loses her virginity before marriage, let outsiders.