How to determine the geomantic orientation of urban housing

Looking at the geomantic orientation of urban housing, it is generally based on north-south permeability. So look at it this way. We are in the northern hemisphere, so if the window is open in the south, the balcony is usually in the north. In winter, the sun is in the south, so we can let the sun in. In summer, the sun is in the north, so the sun won't shine in. This house with transparent north and south is warm in winter and cool in summer. Can make your stay comfortable. Now basically buying a house in the city is such a requirement, and it must be transparent from north to south. As far as geomantic omen is concerned, you should go to the scene to inspect it. If there is no field trip, then all this is just empty talk, white teeth. Therefore, feng shui should be seen on the spot.