It was common in ancient times to place a bright red mole on the arm of a maiden, akin to a white lotus root, to verify a woman's chastity. This was called "Shou Gong Sha" (literally, 'Sand for Protecting the Palace'). Those who don't understand assume that "Shou Gong" means guarding that sacred and special place. In reality, "Shou Gong" is a type of gecko, with a slightly flat body, a grayish-dark spine, and granules...