The height of the door for people to pass is generally not less than 2m, and the height of the higher door should not exceed 2.4m m. The installation direction of the gate is geomantic, and the size of the gate is related to the size of the gas absorbed in the house.
Extended data
Siheyuan embodies the traditional folk customs in China, namely, auspiciousness and taboo. Generally speaking, the decoration of quadrangles mostly has the meaning of auspiciousness, auspiciousness and blessing.
Siheyuan has a history of at least 3,000 years, and there are many types in China, among which Beijing Siheyuan is a typical one. Siheyuan is usually lived by extended families, which provides a relatively hidden courtyard space for the outside world. Its architecture and pattern embody China's traditional hierarchy of respect and inferiority and the theory of Yin-Yang and Five Elements.