You don't have to consider the ground form when buying a building with more than 3 floors, which has no influence on you. You don't have to look so big below the third floor, because you are not the owner of a single building, so you don't have to consider this big situation. If you are a building owner or have a single-family house, you have to consider all these.
It will be more helpful for you to apply your strength to the feng shui analysis of your own unit. You have to find a good sitting position, find a good head, and then look out the window for invisible ghosts.
I hope it helps you.