In geomantic omen, opening windows in different directions has different meanings and plays different roles: 1. East-facing windows: sunrise in the east breeds hope and vitality. East-facing windows can make the house full of yang and symbolize good luck. 2. North-facing windows: North-facing windows are not conducive to the health of residents, because the north belongs to yin water in the five elements of geomantic omen, and opening windows to the north is easy to make bad air enter. 3. South-facing window: The south-facing window conforms to the principle of sitting north and facing south, and is the most common window direction. 4. Southeast-facing windows: Southeast-facing windows are good for the house to be warm in winter and cool in summer, which is good for health. 5. Windows to the west and northwest: Windows to the west and northwest are vulnerable to cold wind in winter. 6. Windows facing northeast and southwest: Generally, large windows will not be opened in these two directions, and the geomantic effect of small windows will be relatively small.