In the Nine Palaces and Bagua Twenty-Four Mountains, there are eight stems, four dimensions and twelve earthly branches. The key is to look at the direction for good or bad luck. To open the door to receive Qi, generally use the house sitting in the Eight Diagrams to open the door with the strong Qi pushed out from the middle. Kan, Gen, Zhen, Xun, Li, Kun, Dui and Qian include Renzigui, Chouyin, Jiamaoyi, Chen and Si. , Bingwuding, Weishen, Gengyouxin, and Xuhai. One purpose is to open the door to prosperity and prosperity.