Why is China's traditional thought most fully reflected in the quadrangles in China?

Siheyuan is the most widely used residential building in China. China's traditional ideas have been fully reflected in the quadrangles in China. The first feature of quadrangles is that the courtyard is surrounded by walls and has no windows, which is called the symbol of closed concept; The second feature is that the layout of the house and the housing arrangements of family members have strict regulations. Parents dominate the position of the whole family, which is fully reflected in the position of housing, so it is a symbol of paternalism; The third feature is that there is a special hall, in which there is a shrine of "heaven and earth are teachers". Weddings, funerals and birthday ceremonies are held here, so quadrangles are a symbol of China people's ethics; The fourth feature is that there are cloisters under the eaves and patios of the square houses, which become a place for family members to blend their feelings. Therefore, quadrangles are also a symbol of integrating family ties and enhancing cohesion.

In ancient times, the left side was respected, so the houses on the left side of the quadrangle were for the elders at home.