soil is the upper layers of the earth that made up of small rock particles combined with water, air, and various particles from dead organisms. Soil could be formed when a rock is experiencing constant force that gradually reduce its shape into smaller particles (could be by being placed on the stream of water or places that have high wind pressure)
The reason why Buddhism first flourished in China was because the rulers used Buddhism as a tool to govern their subjects with religion.From the aristocracy to the common people are the subjects that the rulers need to rule