Features of Chinese Architecture:(III) Enclosure

Contemporary Western architectural practices typically involve surrounding a building by an open yard on the property. This contrasts with much of traditional Chinese architecture, which involves constructing buildings or building complexes that take up an entire property but encloses open spaces within itself. These enclosed spaces come in two forms: the open courtyard ( ) and the "sky well" ( ).

The use of open courtyards is a common feature in many types of Chinese architectures. This is best exemplified in the Siheyuan, which consists of an empty space surrounded by buildings connected with one another either directly or through verandas.

Although large open courtyards are less commonly found in southern Chinese architecture, the concept of a "open space" surrounded by buildings, which is seen in northern courtyard complexes, can be seen in the southern building structure known as the "sky well". This structure is essentially a relatively enclosed courtyard formed from the intersections of closely spaced buildings and offer small opening to the sky through the roof space from the floor up.

These enclosures serve in temperature regulation and in venting the building complexes. Northern courtyards are typically open and facing the south to allow the maximum exposure of the building windows and walls to the sun while keeping the cold northern winds out. Southern sky wells are relatively small and serves to collect rain water from the roof tops while restricting the amount of sunlight that enters the building. Sky wells also serve as vents for rising hot air, which draws cool air from the lowers stories of the house and allows for exchange of cool air with the outside.