The orientation of Yin and Yang Mansions, Gen is the northeast and Kun is the southwest. It means that the head faces northeast and the feet face southwest. This is the twenty-four mountains and twenty-four directions that Mr. Feng Shui often talks about, specifically, one white, two black, three blue, four green, six white, seven red and eight white nine purple in Huang Wu. In a word, there are three mountains and 3824 mountains, among which Huang Wu is the central soil, not one of them.