Was there really palace sand in ancient times?

Ancient legend has it that geckos are raised with crocodiles and the like, and cinnabar is fed every day. When it ate about seven kilograms of cinnabar, it was mashed and used to light a woman's body. It is a little deep red, as long as it doesn't have sex, it will last for life, and once it does, it will disappear without a trace. But it can only be used on unmarried women, and married women are absolutely invalid. This method became popular with the rise of Neo-Confucianism in Song Dynasty.