The reason for this is the following:
Good lighting. Where the windows face south, southeast or southwest, indoor lighting is better. Sitting facing south can make full use of sunlight, which is warm in winter and cool in summer.
Good ventilation. Sitting facing south will make the air in the room fully circulate.
Sitting facing south is not only for the lighting and ventilation of the house, but also to avoid the north wind. China is a country with monsoon climate. In winter, the Siberian cold current keeps invading, and in summer, the Pacific cool wind gradually rises, which makes the monsoon direction changeable all year round.
Sit facing south and conform to the heaven. In ancient times, the south was regarded as supreme, while the north symbolized failure and submission. The king reigns in the world, the ninth five-year plan. The fifth soil behavior is yellow, and the soil lives in the center, symbolizing the unity of the country.
The house feng shui pays attention to gathering wind and gas, and the house facing south just conforms to the climate law. In winter, the house can block the invasion of cold current, but in summer, it can meet the southeast wind or southwest wind, and the indoor air flow is smooth and cool, which is beneficial to the residents. Houses facing other directions are easily attacked by cold wind and easily changed into diseases such as headache and arthritis.
All China people invented the "Five Elements", so we should exclude some rational arguments. Talking about everything in the world is closely related to the traditional Chinese medicine in China. It is about the treatment of diseases by the five elements, that is, the parts where the five elements represent people. You can't say that one ring is broken. If it is separated, it will lead to obstacles in other links.
Sitting facing south means smooth sailing and is highly respected by everyone. However, with the increasing demand for houses, people have neglected any orientation problems. The house facing south is naturally the best. If not, then the first consideration in buying a house is lighting, so there is no problem of being too particular. However, the wisdom of the ancients is admirable, because they can combine many factors to get the best living position of the house.