Why should I stick a round mirror at the door of the Feng Shui knowledge store?

This is feng shui, which is generally used to dissolve the opposite Shaqi. In rural areas, some people also put mirrors on screen walls (called screen walls and screen walls in some places) or gates. Sha Qi, who tried his best to embody the other side, came back, so he belongs to the aggressive generation of Feng Shui evil spirits. Considering the neighborhood relationship, it is generally not recommended.