In the north, there are many people who have a serious cold and suffer from respiratory diseases such as asthma, but if they live in Hainan Island where the seasons are like spring, most of them can be cured without treatment. There are many people suffering from rheumatism in the south, but living in places with dry air such as Xinjiang can naturally recover.
For example, houses in the north should be cold and warm, with thick walls, and some have double glass and double walls. The ancients simply dug holes to avoid the cold, which had the effect of being warm in winter and cool in summer; Houses in the south should be heat-proof and moisture-proof. Many doors and windows are open, and some have patios to facilitate ventilation and cooling. Some mountain people simply use bamboo and wood to build diaojiao buildings on the ground, which can not only ventilate and prevent moisture, but also defend against the invasion of wild animals, insects and snakes.
From the perspective of traditional geomantic omen, houses in the north generally face south; Houses in the south don't have to face south, as long as they follow the trend, they can choose reasonably according to the mountain situation around the house or the direction of the road, and adjust the orientation and sitting direction, which is an auspicious house.
From the meteorological point of view, the reason why houses in the north are required to face south is because the doors and windows should face south for lighting and heating, and the back wall should face north for wind and cold protection; Houses in the south do not necessarily have this requirement, as long as they are ventilated, cool and moisture-proof.
It can be seen that traditional geomantic omen and meteorology also have natural tangency. In addition, traditional geomantic omen pays special attention to the relationship between architecture and wind and air, which is no different from climatology studied in meteorology.
One of the connotations and missions of modern geomantic omen is to combine traditional geomantic omen with modern meteorology, and explore how the layout and adjustment of human residential buildings can adapt to the changes of meteorology and climate, so as to benefit people's physical and mental health, family harmony and career development.