The habit of houses in our country is "sitting north facing south". China is located in the northern hemisphere, most of which is in the northern temperate zone. The sun rises from the east to the south and sets in the west. In winter, the height angle of the sun is small, and the doors and windows of the house face south, which can let more oblique sunlight into the room, thus increasing the indoor temperature.
In summer, the height angle of the sun increases, and the light in doors and windows is relatively less, thus keeping the room cool.
Then, most of China is located in the East Asian monsoon region, and the houses all face south. In midsummer, you can avoid the direct sunlight in the hottest afternoon, and in winter, you can avoid the cold wind in the northwest, which plays a role in preventing cold and keeping warm.
But in ancient times, at the beginning of the dynasty, the emperor sat facing north. Is to let the whole world face him and worship him, contrary to the houses in the world. Later, it was extended to "sitting south facing north", indicating noble status.
So the position of the dragon chair is to sit south to north.