The door of the hall faces south and the door faces west. Can you open a door at the back of the hall?

The door of the hall faces south and the door faces west. You can't open the door behind the hall. The door of a room faces south and west, that is, the sun rises and is tight. Opening a door at the back of the room not only loses the integrity of the whole house, but also is not tight and looks unsightly. So it is not allowed to open a door behind the room with the south gate facing west.