Because the west belongs to gold, gold produces water, so it has the effect of mutual growth and common prosperity. For example, if the five elements belong to wood, the bedside should not be west or northwest, because gold belonging to the west or northwest has a very serious impact on wood. If you belong to the core monument of life, you should avoid these two directions, otherwise it will be difficult to rest at night, and even your career, health and fortune will be adversely affected.