I just heard that there is a kind of wall knife. Ask the master to help me see if it is good. If not, what should I do? The first is to face up, and the second is.

These are superstitious statements and nonsense. Don't believe such things. It can be said that when there are high-rise buildings on both sides and the street in the middle is very narrow, under certain weather, it will have a strong air impact on the buildings facing the street. If the building is in disrepair because of its age, or the building itself is unqualified, it may cause harm to it.