Kuala Lampur, Dec. 17 -- Long before metal nails became standard on building sites, Asian artisans were already shaping entire structures from interlocking wooden joints, a tradition that has since become a defining pillar of the region's construction heritage and architectural identity. Malaysia has tanggam, and Japan has kigumi; and although they emerged from different cultural histories, both showcase how master carpenters built strong, enduring wooden structures with no nails required. Widely recognised for their ingenuity, these systems continue to attract global research interest as examples of how Asian builders developed practical yet sophisticated engineering long before modern tools came into play. Their survival speaks to a dee...