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  The jargon in rosewood furniture - 'If you break your arm or leg, you can't break your tenon' - refers to the Eastern wisdom of this set of concave convex bite. 1. From Hemudu to Ming style furniture: a 7000 year process thread Mortise and tenon joints were not created by Lu Ban alone. The wooden components unearthed from the Hemudu site prove that the Chinese had already mastered this concave convex joint technique as early as 7000 years ago. The term ' square and round chisel ' in the Chu Ci during the Spring and Autumn Period and Warring States Period refers to it. Lu Ban's true contribution lies in legislating regulations - he sorted out scattered tenons, mortises, and holes into neat and rigorous shapes, improved ink strokes, curved rulers, planing, and chiseling, and bid farewell to the crude era of "relying on hand feel" in woodworking. In the Ming and Qing dynasties, mortise and tenon joints were developed to the extreme in rosewood furnit...