How to use the geomantic compass? . . . . . . . . . . . . .

For bungalows, the center is the vertical pole in the yard; For houses and buildings, measure 7 footprints outside the unit door within 5 floors; For the unit door, draw a cross line diagonally on the building plan of more than 5 floors, and the intersection point is a vertical rod. Drag the compass towards the door by hand. When drawing the intersection line, the balcony canopy in the corridor is not counted.