Want to open a supermarket and open the door from the other side of the house?

Then you should be on the first floor. Open the door, but don't let the two doors face each other. If the house is from north to south, if the north gate is a little east, you should open the south gate to the west, and so on. Just don't break the feng shui. Just don't let two doors open at the same time to avoid getting rich.