Rouge is the name of red pigment in ancient paintings, and it is a woman's cosmetic. In ancient poetry, it is the reappearance of love, a symbol of beauty, a beloved wife or lover, and a meaningful thing related to women, such as peach blossoms in the rain. It is also used to express feelings about beautiful scenery, such as "Peach Blossom with Little Rouge", "Begonia with Wind and Rouge Rain" and "Apricot Blossom with Rain and Rouge Penetration".