You should know the theoretical basis. Otherwise, it doesn't matter to you whether others are right or wrong. Maybe it can give you peace of mind on purpose. I have seen many people's questions, which are obviously correct in the academic field. But he doesn't believe it, but believes in some unfounded practices. Change its practice. This may be what people often say about fate. If there is no such luck in life, he will believe things that are not good for him. When he is lucky, he naturally believes in people and things that are good to him.
Let's talk about this problem you mentioned. It doesn't mean that all the residents on the 29th floor are good, because each household opens different doors and resumes different land. If opening the door is the same as collecting gas, then the internal structure of the house is also divided into good and bad. If you choose a floor, it is recommended to use it (the rhyme of the Eight Houses is good or bad, and all the teachers in Dahan Yijing College should know it).
Personally, buying a house is like this:
1, the building itself is good or bad.
2. The floor corresponds to the number of rooms.
3, the quality of the building (room) outside the bureau.