1, China is located in the northern hemisphere, so it is good to sit in a house facing south. Think about it, sitting in a house facing north, you can hardly see the sun all the year round. Sitting in a house facing east and west, you can't see the sun for a long time, and you can get monkey hot in the afternoon. So, in terms of comfort, of course, everyone likes to live in the north house. The first house is the most important house in the whole family, and it is also used by the most "respected" people in the family. Of course, you should sit in the main room facing south.
Since ancient times, the Chinese nation has attached great importance to geomantic omen. In fact, Feng Shui means "smooth sailing", which means "comfort and convenience". In fact, it is the same as the first one in a sense.
3. Since ancient times, China has lived through dynasties. Look at their palace (main hall) and the emperor sitting in the golden hall facing south. Of course, the people should learn from the emperor, and naturally let the first room sit facing south.