Three mountains drop blood, which is the word generation of orthodoxy. In ancient times, dropping blood often meant identification or alliance. Literally, Blood from Three Mountains seems to be an alliance of three Taoist Mountains. Of course, there is another saying that "three mountains of blood" is more appropriate, which seems to be easier to understand literally.

"Three Mountains Drop Blood" was originally handed down by Zhang Jixian, the 30th generation Shi Tian of the Southern Song Dynasty, and Sazu was the first generation disciple. It is recorded in the classic "The Temple of Heaven and Jade Pavilion" presented by Zhengyi School that "this word was sent to the 30th generation of Shi Tian Xu Jing Zhenjun, and was awarded to Zhengyi School's founder. Anyone who has studied Taoism must take a word in the taboo of the law at the beginning of his fame. "

Later, "three mountains drop blood" gradually developed into the dharma vein passed down by the disciples of Zhengwan School. Today, orthodox Taoism regards this "three mountains drop of blood" as the basis of inheritance. It can be seen that "Three Mountains Drop Blood" and its arranged word generation have a great influence on Taoist orthodoxy.