Strange doors are mainly based on the method of setting leap and disassembling and mending. The dismantling and mending method puts Shangyuan, Zhongyuan and Xia Yuan into a solar term, with a cycle of 60 years. The leap method is recognized in ancient times, and it is necessary to convert the commonly used perpetual calendar into a special perpetual calendar. The main method of divination is to use gods. There are 64 kinds of strange gods, so there are many kinds of gods and many reference coefficients to measure the same thing. You can observe the same thing from multiple angles and make comprehensive analysis and judgment, so the accuracy is higher and more specific.
Extended data:
Daoism originated from perceptual thinking. In the process of development, he comprehensively used the associative power of image and analogy, as well as the intuitive thinking of observing things and taking images, the logical thinking of clustering and grouping, and the thinking of changing the number of images. The magical power of Taoism is also the imperial wind when the Yellow Emperor attacked Chiyou. It is a strange method to choose the date according to the solar terms by using Luo Shu and gossip the day after tomorrow.
About the origin of Daoism, roughly speaking, it was the Chiyou Rebellion, and the Yellow Emperor won many battles. Within nine days, Xuannv granted Daoism to Xuanyuan Huangdi, helping Huangdi to eliminate Chiyou. In this way, Daoism has a history of more than five thousand years. Known as the highest level of foresight, it is called the study of emperors/the highest foresight. According to legend, it was created by Xuan Nv in Nine Days.
Baidu encyclopedia-Taoism