The nine-character formula of Taoism refers to the nine-character mantra of Buddhism, also known as the nine-character mantra of Upanishads, namely: pro, soldier, fight, quan, array, column, present and the first nine characters, and the corresponding nine handprints (said to be nine, in fact, it is only a hollow name, and the handprints of the Ganges sand number can be transformed from this, also known as the nine-character engraving of Upanishads, and the basic seal (single seal, Pu Xian Samadhi). This is a tantric handprint. One is used when going out to March, and the other is to punish evil with relatives, soldiers, fighters, philosophers, classics, arrays, columns, middle and front. First of all, it is not a nine-character formula in Daoism, but comes from Bao Puzi's Joining the Society: "You should know six secret wishes when you enter the mountain. Zhu Yue said: "People who lead troops to fight are all marching in procession, so we should always treat them as invincible", which belongs to Taoist magic "Daoism" and consists of three concepts: "strangeness", "gate" and "hidden armor". Odd number "refers to b, c and d; "Door" refers to the eight doors of quietness, health, injury, supervision, scenery, death, shock and opening. "Escape" means hiding, and "A" refers to six members of the Jia family, namely Jia Zi, Jia Xu,,, and Jia Yin. "Escape" is the most distinguished of the ten cadres. It hides but does not show, hiding under the Six Instruments. "Six devices" refer to things, machines, watches, minds, people and ghosts. The principle of seclusion is that Jia and Liu Wu, Jia Xu and Liu Ji, Shen Jia and Liu Geng, Wu Jia and Liu Xin, Chen Jia and Liu Ren, and Jia Yin and Liu Gui. In addition, we also cooperate with Peng, Ren, Chong, Fu, Ying, Rui, Zhu, Xin and Qin Jiu. One is that "people who fight in the army are marching in procession"; One is the words "near, soldier, fight, fighter, whole, array, column, front"