Taoist classic "Taoist Collection" includes Feng Shui classic "Family Classics" and funeral etiquette book "Confucianism worships reason and exercises filial piety" related to Feng Shui. The "Nine Planets" theory of management style and geomantic omen refers to Taoism, and the geomantic classic "Nine Days Xuan Nv Qingnanghaijiao Classic" borrows the name of "Xuan Nv" from Taoist immortal spectrum. Qinglong, Baihu, Suzaku and Xuanwu were originally the protectors of four directions in Taoism, and Feng Shui formed the "four spirits" model with their names. The "fu Zhen" of Feng Shui draws lessons from the "fu Zhen" of Taoism, and the "hanging mirror" of Feng Shui draws lessons from the "looking at the demon mirror" of Taoism.
The reference of geomantic omen to Taoist theories and methods also led to the emergence of Taoist priests who specialize in geomantic omen. These Taoists spread geomantic omen by using Taoist extensive folk tombs, and also spread Taoism by using the effect of transforming geomantic omen. Buddhism, as a cultural belief, studies the relationship between man and the material world, while Feng Shui emphasizes the harmony between man and the natural environment. So Buddhism is bound to be influenced by ancient geomantic omen.
Buddhism can prevail in China because it is flexible according to the changes of region and times. In China, because the technique of immortals and geomantic omen is very popular, Buddhism absorbs the knowledge of seeing qi, five elements and stars in geomantic omen in order to attract believers, so as to check people's health, predict bad luck and cure diseases.