Is it caused by standing upright or sitting on a mountain?

What you are asking is contradictory. Sitting and orientation are opposites. What kind of sitting has what kind of orientation, and vice versa. This is related to the orientation of sitting posture. According to Bazhai, it has something to do with the layout of the master bedroom, living room and bathroom. Kong Xuan believes that this is related to the "Three Yuan Nine Games", especially to the external environment. Whether it is Bazhai or Kong Xuan, it actually determines the feng shui or external environment of a villa.