I want to ask a master who knows Feng Shui to decide the direction of the mountain of the house, which direction to turn after entering the door, or to find the center of the house and which direction

I want to ask a master who knows Feng Shui to decide the direction of the mountain of the house, which direction to turn after entering the door, or to find the center of the house and which direction to watch the door. If it is an urban building, it should be based on the sitting direction of the whole building, that is, the entrance of the building, rather than the household. For example, the entrance of a unit faces south, that is, sitting north facing south. However, the entrances of urban houses now generally face north. If it is a single-family house, of course, the orientation of the main house shall prevail.