This belongs to the so-called morning glory evil spirit in traditional psychology, which is said by the people to lead by the nose or go downstairs. Generally, a threshold can be installed at the gate or a screen can be placed in the door to let the gas enter the house along the screen. Or put Shanhai Town at the gate, facing the stairs, and dissolve the morning glory. For a house that is doing business or starting a company, Wu Caishen can be used to solve the problem of facing the door.