The location of the kitchen and bathroom should be as far as possible in the north of the house or the air outlet of the mountain terrain. Especially in the kitchen, the best and most suitable scheme should be set in the north direction of the house or the air outlet of the mountain terrain. This is incompatible with the traditional concept of geomantic omen, but it conforms to the setting of natural wind direction. The general trend of air flow in China is (observable): it is hot in spring and summer, and the general trend of air is from south to north, that is, the south wind dominates. After the cold weather in autumn and winter, the overall airflow direction is from north to south, that is, the north wind dominates. This airflow characteristic, the kitchen is located in the north direction, which is beneficial to take the hot air generated by the kitchen out of the room when the hot south wind dominates in spring and summer; When it is cold in autumn and winter and the north wind dominates, the hot air generated by the kitchen is brought indoors. Relatively speaking, the room looks warm in winter and cool in summer.