The location of the mountain is also called Xuanwu. If the position of the backer is not good, it is not conducive to the financial person in charge and the client to sue the thief for robbery. Xuanwu star is the god of darkness, and even abnormal peach blossoms. Feng shui takes the front as the direction, in charge of wealth, and sits behind the mountain, in charge of people. Therefore, it is very important for the house to rely on the mountain.