The two teachers upstairs are right. The "gun evil spirit" in the shape evil spirit is not straight, and the U-shape or arc is "anti-bow evil spirit". Looking horizontally, the problem is not big. If it is an obvious northeast, southwest or southeast, northwest road, I think it is even worse for the northeast, southwest doorways, because we are located in the northern hemisphere, the earth rotates from west to east, and the northeast and southwest run like a rope on a rotating flying chair, and the force is downward. If there are buildings or trees on both sides of the road, the airflow will be "thrown" into the main house like water in the canal. Many Dachuan Mountain Dragons in China are located in the northeast and southwest.
From my home, I hope I can help you.