2, their derived meaning refers to people who love each other but can not be together helpless. The white moonlight refers to because it has not been obtained and become extraordinarily beautiful (and may be pure and moving) things, now more used to describe the first sight of the heart, love but not the person. Vermilion sand mole after experiencing love, is to stay in the heart of a mark, can not forget.
3. In simple terms, the vermilion sand mole refers to the man's most beloved woman, the white moonlight refers to the goddess of the man's heart.