Symbolize the color of water.

Taoist symbols red and black are civil and military, red is literary and black is martial. Xie Jie, an abortion, treatment and so on are mostly painted by cinnabar, Dan belongs to the south, meaning longevity; Demons, ghosts and gods, towns and houses are mostly black, and black is soap, which means murder. Generally used as a yin symbol, such as the five ghost symbols, written on paper in five colors: blue, white, red, soap and yellow, in which soap paper is black paper and written in white! All other four-color papers can be written in black.