Dwelling compounds or quadrangles ( Siheyuan ) in Beijing are one important aspect of the citys architectural heritage. Beijing ' s dwelling compounds are generally rectangular , with the four sides squarely facing the cardinal points. almost every dwelling compound is surrounded by high walls, with an open courtyard in the centre. the buildings on four sides are usually one storey high.

Stepping over the high wooden base of the front gate of a large compound, you will find a brick screen located a few feet inside. In front of the screen is the outer courtyard, which is flanked by structures to the east and west. In former days, these were the kitchen and servants ' living quarters. A red-painted gate leads through the north wall of the outer court into the inner courtyard. The main building faces south to get the maximum possible sunshine in winter, and the eaves provide a pleasant shade in summer when the sun is high.