In ancient Chinese architecture， the mortise-and-tenon structure reached a very high level of artistry and craftsmanship. This structure involves carving a protruding part， called a "tenon，" on one end of a piece of wood， and carving a matching recess， called a "mortise，" on another piece of wood. When the tenon and mortise fit together， they can be tightly joined without the need for nails or glue. This method not only made buildings stronger and more stable but also demonstrated the wisdom and creativity of ancient Chinese craftsmen.

在中国古代建筑中，榫卯结构发展到了极高的艺术和技艺水平。