What is the principle of palace sand?

Shougong Sha is a female chameleon made in China, which was called Zhu Gong in ancient times. In its breeding season, it is captured and mashed and mixed with cinnabar.

Modern science has confirmed that female chameleons are full of estrogen in reproductive period. When it meets androgen, estrogen and androgen will neutralize and disappear. It is scientific to use it to mark a woman's chastity, although we can't believe it all.

Generally speaking, in ancient times, this kind of domestic sand was used by women before they got married, and it had no effect on married women. As mentioned earlier, you should put this sand on women. Don't touch the water for the first few days, otherwise it will disappear. Generally, the harem sand will penetrate into the skin after three days, but it will not disappear under normal circumstances. Palace sand will not disappear until the woman gets married.

Extended data:

According to the Natural History of Jin Dynasty, if you feed the gecko with cinnabar, the gecko will turn red all over. After eating seven kilograms of cinnabar, mash the gecko and dye the limbs of the Virgin with it, so the color will not fade. Only after sexual intercourse, its color will fade, so it is called "palace sand"

Using this legendary method with excellent effect and simple steps to verify women's "chastity", no matter whether it is true or not, some dynasties put "palace sand" on women who were elected to the palace as a sign of adultery. When it was circulated among the people, many martial arts novelists used "Zhen Gong Sha" to make an issue of it.

It is said that palace sand can only be used to verify the virginity of virgins, and married women are absolutely invalid. In fact, this method was popularized with the rise of Neo-Confucianism in the Song Dynasty.

References:

Baidu encyclopedia-shougongsha