This is probably a charm to attract auspiciousness, and it will have no effect on you...
If you are really worried, just get a Feng Shui compass to help you turn things around. Well, it is not recommended to use that Bagua mirror. If someone encounters disaster, people will not be so polite next time... Fighting like this is not good for neighbor relations...
Hang the Feng Shui compass on Just the inside facing the front door of your house is fine. You don’t need to hang it outside, lest the other side think you are harming others... For example, the wall facing your front door when you come in is usually the dining room. The dining room now faces the door. There is a wall behind. You can just buy a small Feng Shui compass with hanging holes and hang it on the wall opposite the door...