Three-in-one feng shui mainly focuses on the quality of dehydration, because the quality of dehydration is directly related to the wealth and health of family members. The good or bad luck of water removal mainly depends on the direction and position of water.

In the three-in-one geomantic omen, the good or ill luck of the incoming water is also very important, because the quality of the incoming water will directly affect the wealth and health of the family. In three-in-one geomantic omen, the good or ill luck of incoming water is mainly determined according to the position and flow direction of the water.

Therefore, the trinity of geomantic omen is not only to seek the good or ill luck of removing water, but also to pay attention to the good or ill luck of removing water and coming water.