When we install stairs, we'd better not install the stairs in the middle of the house, because if we build the stairs in the middle of the house, it will give people the feeling that the house will be split in two. According to Feng Shui, building stairs in the middle of a room will lead to more quarrels at home. And the middle of the house belongs to Tai Chi position, so it should be quiet. Therefore, it is best to build the stairs at home against the wall. If the house is sitting in the east-west direction, then the best direction of the stairs is to build in the southwest. If the house faces southeast and northwest, then we'd better build the stairs in the west.