As the name implies, the so-called door direction is the direction of the door. The door we are talking about here refers to the main entrance of the house, that is, the door that enters the hall from the outside. The direction of the door is relative to the whole house. The direction of the house is the direction of the house. We often say that sitting north faces south and sitting east faces west. When people sit, the sitting direction of the house extends back and forth. When a person sits, the position of the spine is. Just sitting, with the front of the body facing. In other words, face forward and sit in the back. The "sitting" of the house is the house, and the position of the rear end of the central axis of the secondary vertical building on the ground plane is the position of the front end of the central axis.
The sitting direction of the house is determined by the longitudinal axis of the building. Generally speaking, the vertical line of the back wall of the house is in the sitting direction, and the direction at the other end of the vertical line is facing. Sitting orientation includes two aspects: the sitting orientation of the house and the sitting orientation of the door. The door and the house sit in the same direction, but they are also different.
For doors that are different from the direction of the house, additional measurements should be taken. 1, whole house sitting orientation: In principle, the vertical axis of the building is the sitting orientation of the building. 2. The sitting direction of the door: gatehouse: a house with a yard. The main entrance of the quadrangle was called the gatehouse in ancient times, because the gate of the ancient quadrangle was tiled and was an independent unit of the building complex. Now it can be called the main entrance of the courtyard or garden. This building is the same, some of which are different from the orientation of the house. Therefore, the door-oriented method is inaccurate. The gate is a yard. The position and sitting direction of the main air outlet and door in the courtyard have an important influence on the geomantic omen of all houses in the courtyard.