Dougong is one of most important elements in traditional Chinese architecture and also a unique structural element of interlocking wooden brackets. Dougong was widely used during the Spring and Autumn Period and developed into a complex set of interlocking parts in the Tang and Song dynasties. [Photo/Chinapic.people.com.cn]

Dougong is one of most important elements in traditional Chinese architecture and also a unique structural element of interlocking wooden brackets. Dougong was widely used during the Spring and Autumn Period and developed into a complex set of interlocking parts in the Tang and Song dynasties. [Photo/Chinapic.people.com.cn]

Dougong is one of most important elements in traditional Chinese architecture and also a unique structural element of interlocking wooden brackets. Dougong was widely used during the Spring and Autumn Period and developed into a complex set of interlocking parts in the Tang and Song dynasties. [Photo/Chinapic.people.com.cn]

Dougong is one of most important elements in traditional Chinese architecture and also a unique structural element of interlocking wooden brackets. Dougong was widely used during the Spring and Autumn Period and developed into a complex set of interlocking parts in the Tang and Song dynasties. [Photo/Chinapic.people.com.cn]

Dougong is one of most important elements in traditional Chinese architecture and also a unique structural element of interlocking wooden brackets. Dougong was widely used during the Spring and Autumn Period and developed into a complex set of interlocking parts in the Tang and Song dynasties. [Photo/Chinapic.people.com.cn]

Dougong is one of most important elements in traditional Chinese architecture and also a unique structural element of interlocking wooden brackets. Dougong was widely used during the Spring and Autumn Period and developed into a complex set of interlocking parts in the Tang and Song dynasties. [Photo/Chinapic.people.com.cn]