In terms of building Feng Shui, is the direction of the residence based on the door of the unit or the direction of the house where you live?

The Thirty Principles of Yangzhai in "Shen's Xuankong Xue" makes it very clear that to judge the six good and bad things about the house, you can first judge by the sitting direction. If it is not allowed, then judge by the door direction. You can also judge by the direction of the door first, and then judge by the direction of the house if there is no criterion. He also said: If the direction of the house is correct, there is no need to consider the direction of the door. If the door direction is correct, there is no need to consider the room direction. This is a question of how to judge the good or bad luck of a house, not a question of determining the direction of the house. The poster here asked how to determine the direction of the house where he lives. Of course, he decided based on the direction of the house.