The emperor established five mansions in order to respect the heaven and the elephant. The red one is Wenzu, the yellow one is Shendou, the white one is Xianji, the black one is Xuanju, and the blue one is Lingfu. The positions of heaven and earth are front and back, left and right, and the sages follow these rules to establish the agency. Heaven was created first and then earth. The essence of heaven and earth is Yin and Yang. When people move in, Yin and Yang Qi are present, so the bones and flesh are strong and the essence Qi is strong. The pure way is only to be guarded by God, guard it without losing it, become one with God, master the oneness, and be in harmony with the family relationship.