In ancient TV dramas, there are often plots of women ordering palace sand, which makes people curious, what is palace guarding?"Shougong" refers to a kind of bug, which in modern times may be the gecko or lizard as we know it. In ancient times, there were some families who specialized in raising these "palace guards" to make ends meet. These bugs are kept in "bowls", but their diet is not delicacies or nutrient-rich food, but cinnabar. After 7 days of feeding, the bugs are pounded into fine pieces. It is said that the color does not fade when women put this powder on their bodies, and once they have sex with others, the red dots disappear. As for why it is called "guarding the palace", the reason is that it was prepared for the concubines of the emperor's harem at that time. Since the emperor had many wives and concubines, it was inevitable that some people would be neglected, but in order to prevent them from fornicating with others, in order to maintain the purity of the imperial bloodline and the chastity of the harem concubines, this Xi was named "Shougong".
However, from a modern point of view, Shougong Sand has no scientific basis at all, and is only a product of feudal superstition. It can't actually verify whether a woman is a virgin or not. In essence, Shoumiya Sand is just a kind of oppression of women in a patriarchal society. Men may be able to take concubines in groups, while women are forced to keep their bodies in good shape. Women who lack the palace sand will be criticized, and such prejudices and unfounded accusations will end in nothing.