There is a small mirror hanging on the neighbor's door, facing the wall of my main house. Does it affect my family?

The front door of the neighbor's house is facing the wall of your main house with a small mirror. According to past superstitions, it is bad for your family and needs to be solved. Besides, it is impolite and unfriendly for your neighbor to do so. But from a real scientific point of view, in fact, his behavior will not have a major impact on your family. If you don't believe what Feng Shui says, then you don't have to pay attention. If you feel so annoyed, I suggest you have a friendly communication with your neighbors. Generally, educated neighbors will converge. If not, you can also consider hanging a mirror to reflect it back.