How to determine the home of Feng Shui earthquake

In the geomantic omen of Bazhai, the door is the orientation. If the door faces west (reverse) and sits east (earthquake), it will shake the house.

However, it is a profound knowledge to determine the direction of sitting in real Feng Shui. Without certain experience, sometimes it may be impossible to determine the real direction of sitting. Even some houses have special external conditions, and it may be necessary to determine more than one sitting direction.