Advantages: The quadrangle naturally belongs to the quadrangle, and the courtyard in the quadrangle is closed and open, which can create a good microclimate inside and reduce the influence of bad weather outside. On the one hand, it can effectively shade the sun and enjoy the cool in summer, and it can get good lighting to keep warm and resist sandstorms in winter. The open-air transparent courtyard is both an air inlet and an air outlet, and it is ventilated smoothly by natural wind pressure. In addition, the courtyard is also conducive to drainage and rainwater collection.

Disadvantages: because it is also a feudal product, the social initiative is not high and the population openness is low.

Beijing quadrangle: also known as quadrangle, it is a traditional quadrangle building of Han nationality. Its pattern is a courtyard surrounded by houses, which usually consists of a main room, an east-west wing and an upside-down room. The courtyard is surrounded by the middle, hence the name quadrangle. Since Beijing was formally established as the capital in Yuan Dynasty, quadrangles and palaces, office buildings, blocks and hutongs in Beijing have appeared at the same time. Xiong's Analysis at the end of Yuan Dynasty recorded: "The street system is called longitude line in the north and south, and latitude line in the east and west. The street is 24 steps wide, there are 384 fire lanes and 29 streets. " The so-called "street crossing" here is what we call hutongs and hutongs today. The land between hutongs is for people to build houses. At that time, Kublai Khan wrote to the residents of the old city that the capital was too old and the high (rich) position (serving in the imperial court) came first, so he customized eight acres of land and gave it to Jia, an official who moved to Beijing.