1. First, explain why the other party hangs a mirror: Mirrors have the function of reducing evil spirits and are mainly used to resolve external evil spirits. The alley left by the original owner is facing the gate opposite, forming a "gun evil" for the other party. The so-called "a straight road and a gun" will cause the health of the family in the main house to decline day by day, and lead to bloody disasters. The other party installed it according to the principles of Feng Shui. A mirror faces the "gun evil", and the image of an alley appearing in the mirror is used to check and balance the real alley rush, thereby resolving the "gun evil". 2. Impact on your family: The other party’s original intention is to protect themselves, not against your family, but objectively it constitutes an obstacle to your family. First of all, the image of the "gun evil" in the other party's mirror constitutes a "gun evil" on your home, although the impact is smaller than the real alley. Secondly, the mirror itself constitutes a "reflective evil" on your home, which will destroy the good aura of your home and make people feel irritable, impulsive and restless. 3. Solution: First of all, in the spirit of neighborhood harmony, you can discuss with the other party that you can remodel the alley, such as building a screen wall, and persuade the other party to take off the mirror. Secondly, if the other party does not agree, don’t use too obvious countermeasures. After all, the dispute arises because of you. You can use the Bagua convex mirror to resolve it: The function of the Bagua convex mirror is to resolve the evil things or fierce fortune-seeking things on the opposite side. Use the Eight Diagrams convex mirror to block objects (lions, Pixiu, etc. in front of large building gates) and reflect back the aura that is unfavorable to oneself. Don't worry, this thing is more effective than a mercury mirror. Another advantage is that the other party cannot find out, thus avoiding conflicts.