In addition to avoiding pollution, in geomantic environmentology, more attention is paid to the geomantic aura of Yuanyun hexagrams and the contrast of colors, orientations and five elements. In the orientation of the door, every door has a unique gas field, which is the five elements gas field. Therefore, in the orientation gas field of the five elements, the carpet should be selected according to the orientation of the door.
If the door faces in the east, the east is wood, and the wood represents green, then the carpet color at the gate should be green. If the direction of the gate is in the south, the south belongs to fire, and the fire represents red, then the carpet color of the gate should be red. If the gate is located in the west, it belongs to the gold in the west, and gold represents golden yellow. So the color of the carpet at the gate should be golden yellow. If the gate is located in the north, the north belongs to water, and water represents light blue, then the carpet color at the gate should be light blue.