Flat burial method. There are mountains and rivers, and the cave site lives in the water, which is always breathable. When the soil is cultivated, the gas will drift away, so the flat method is used. Think of water as a stone wall, but cover the wall with a big stone board and open a gap in front so that water can still flow out. Put the coffin on the slate, spread the soil into a grave and make it rich.
The law is buried in it, and there is no evil forever. Mountains overlap and Long Mai gathers. First of all, we must destroy the alien dragon. Some big dragons are very small, and some small dragons are very big. These specially deformed Long Mai cannot be used as a burial place. The scripture says: ask the dragon to rise on the ground and ask the dragon to lie underground.