How many kinds of divination are there?

"Divination" is a kind of magic used to predict future or unknown events in ancient times, similar to astrology. Throughout the ages, many people have learned this technology, and after years of reproduction, many types and factions have been formed, and the classification in different periods is not the same. 1. In the Tang Dynasty, there were mainly yin and yang, dreaming, housekeeping, nine palaces, giving life and burial. If you add the official accounts of Zhan Hou, Gui Bu, Yi Zhan, Wu Zhao, etc. There were about twelve kinds of divination in the Tang and Five Dynasties. 2. In the last week of the Five Dynasties, these divinations were mainly divided into five categories. In Guang Shun's Three-year Imperial edict, except astronomical divination and Taiyi formula, other divination techniques are divided into three categories, namely instant sun, divination and five elements, and five categories refer to astronomy, Taiyi formula, time, divination and five elements. Around this time, the choice of yin and yang was returned to people "time"; Turtle, Yi, etc. are classified as "divination", while other physiognomy, burial methods and fate are all classified as "five elements". Moreover, the imperial edict also said: "The books of time, five elements and divination are not prohibited." This is quite different from the intention of banning "miscellaneous divination" in the imperial edicts of the early years of Emperor Taizong. This change in the atmosphere of the times has also brought about changes in the types of divination.