The role of Fuzuo is to subdue evil spirits, treat patients and eliminate disasters. As a kind of magic, ofuda is based on the belief in ghosts and gods. Taoism is a long-term practice of Fu, and created Fu Daoism for it, and wrote many Fu books to classify Fu. To sum up, ofuda can be divided into the following four categories: Wen Fu, Yun Zhuan, Fu Ling and Fu Tu. Palindrome is the simplest, just composed of a few small words or simple strokes. Yunxi is a heavenly book in which immortals appear, and it is a graph that imitates weather changes. A spell is a figure composed of lines that are more complicated than palindromes. Symbol map is a symbol that combines gods and runes.
Zuo Fu has a wide range of uses. In ancient times, it was mainly used to cure diseases and save lives. Some burned ofuda into ashes and dissolved it in water for patients to drink, while others were worn in bags. In addition to treating diseases and saving lives, Fuyong also has the effect of exorcising ghosts and evil spirits, which can be worn around or pasted on doors and windows. In fact, in today's science, it is somewhat permissible to cure diseases and save lives, and there is no scientific basis at all. However, the role played by Fu Yong is not that Fu Yong himself relieved the patient's condition, but the psychological suggestion brought by Fu Yong. After drinking rune-dissolved water, some patients' mental state gradually improved, instead of being depressed, they gradually became active, thus mobilizing the self-defense mechanism in the body and overcoming the disease step by step.
Fu Yong's painting method is also very particular, so he must not be treated casually. The ceremony of drawing symbols has certain procedures. First, an altar was set up for sacrifice, and the gods believed by Taoist priests were written on the general mantra of the general altar, and the altar was rebuilt to offer fruit outside the house. Taoist priests must clean themselves before drawing symbols, eliminate distractions, and some can only draw symbols when they are ready.