The stairs are in the middle of the house, so there is no fire to stay in. Will feng shui be in charge, and will it affect all aspects of people in the house?

Stair centering is rare in practice. Many people think that the stairs are in the middle. Pull the house between two diagonals, hold it down by the stairs, and call the ladder to center. If the feng shui is not good, even if you don't move in, it will have a certain impact, but the impact is not as great as after moving in.