What is the mysterious rune paper?

Fuyong, a mysterious document used by Taoist priests in the old days to exorcise ghosts, recruit gods or cure diseases and prolong life.

Taoism writes spells on paper symbols to practice.

A figure or line that drives away ghosts and gods

Taoism is engaged in a variety of Taoist arts, the most important of which should be symbols and divination. The so-called "Fu", originally a document promulgated by the emperor, has unparalleled authority. What about "Fu"? It means record. Later, it was borrowed by alchemists, saying that gods have symbols, either seal scripts or pictures, which appear in the sky in the form of clouds and are recorded by alchemists, becoming magical symbols, which can be used to send gods to serve ghosts and suppress evil spirits. From the Han Dynasty, many Taoist priests used runes to treat diseases or exorcise ghosts. By the Wei, Jin, Southern and Northern Dynasties, Sui and Tang Dynasties, it had spread from the Central Plains to many neighboring countries and regions! ! In the five elements, yellow stands for earth, which stands for benevolence and righteousness in human nature. Yellow also represents Di Wang Zhidao. So when the two meanings add up, Taoism likes to draw symbols with yellow paper. The symbol is not necessarily yellow. People who know symbols will use five colors of symbol paper, each with its own function. For example, one of the functions of black rune paper is to invite "all spirits", "Shu Ren", "righteous people", "good brothers" (ghosts) and even Yin soldiers.