摘要
The block-by-block revival of an ancient Chinese building technique The Forbidden City, constructed over 600 years ago, served as the imperial palace of the Ming(1368-1644) and Qing (1644-1911) dynasties. Its wooden-framed buildings,erected without nails or glue, have existed for hundreds of years and weathered several earthquakes. The secret lies in sunmao, or the mortise and tenon technique, which is a concave-convex joint used to connect two sections of wood commonly applied in ancient Chinese architecture, furniture and other wooden instruments.
