After being born according to the selected date and time, the child's constellation is fixed, and his life and luck are basically fixed. So is the life of the house. According to Yuan, the life of the house will be fixed. People's fate should also consider the acquired factors such as occupation and traffic direction. So is metaphysics. The life of the house is prosperous, and the situation of Ding Cai is prosperous. We must also consider the external situation. If the external situation conforms to fate, Ding Caiwang, if it goes against fate, Ding Caiwang loses both. If Ding Cai's fate is defeat, but the method of splashing water on the mountain can also save the defeat and replace it with Ding Cai.