Why does feng shui say that the earth has landed?

That is, the foundation of the building should be smooth and stable, and there should be no obvious ups and downs. This principle comes from the ancient people's observation and summary of the natural environment. It is found that in the natural environment, the flat place is easier to absorb and store the yang, while the uneven place is easy to lead to unstable gas field and poor flow. According to geomantic omen, the foundation of a building must be flat to ensure the stability of the gas field in the house, which is beneficial to people's health, career and wealth. Feng Shui is an ancient culture in China. It is a science to determine the best position and direction of human life and work through observation and analysis of the natural environment.