Generally speaking, there are rules about the material of the painting symbol: the painting symbol must use ink or cinnabar, especially cinnabar. Cinnabar is widely used because the ancients believed that cinnabar had the function of suppressing evil spirits. The carrier of the word is red wood board, because in ancient times, people thought that mahogany had strong exorcism power. Followed by cypress board, jujube board, stone, brick and yellow paper. In addition, cloth and spun silk are also widely used. ?
"Curse" is one of the main means of preaching and practicing Taoism in China. The so-called "spell" is a general term for symbols and spells. Generally speaking, "Fu" refers to a mysterious image with a brush or ink pen, which combines dots, lines, figures and pictures, and mainly bends strokes. Insiders say it has many functions, such as exorcising ghosts, treating diseases and eliminating disasters. "Curse" refers to a formula with special audio effects. Doors are widely used to preserve health, pray for disaster relief or summon exorcists to achieve the special purpose of practitioners.