1. "The Book of Burial" first put forward the theory of "qi" in Feng Shui: those who are buried are those who hide and use the "qi". The yin and yang energy, when it blows up, becomes wind, when it rises, it becomes clouds, when it falls, it becomes rain, and when it travels through the earth, it is called vitality.
2. "The Book of Burial" puts forward the theory of hiding wind and obtaining water:
The method of Feng Shui is to obtain water first, and to hide wind second. The strong Qi makes it popular, while the rest remains stagnant. Although scattered, the deep ones are still gathered together. The Sutra says: External Qi is running rampant and internal Qi is stopped. This is why. The scripture says: The shallow and the deep can be multiplied, and Feng Shui will be created by itself.
3. "The Book of Burial" puts forward the "situation" theory of Feng Shui.
4. "The Book of Burial" puts forward the "Four Gods" sand theory of Feng Shui
5. "The Book of Burial" puts forward the standard theory of Feng Shui soil quality