What is the area between due east and due southeast in geomantic omen?

You asked the wrong question. "Tian Yi", "Fu" and "Anger" are the terms of geomantic omen in Bazhai, and they are the conclusions drawn from the combination of eight diagrams and the method of returning to Tibet.

Such as Ganke divination, they are five ghosts. Dry for the northwest, earthquake for the east, the east for the northwest, mutual five ghosts, this relationship comes from this.

If the East Gate rises and falls, it is called earthquake+earthquake is prone position, and earthquake+dryness = five ghosts.

East Earthquake+Southeast Fork Gua = Huyan Year, which is an extension of each other.