Introduction to the Smelting Technology Exhibition: This unit displays some bronze ritual vessels from Sanxingdui to reflect the metallurgical technology of the ancient Shu Kingdom in Sanxingdui. Sanxingdui bronzes have complex craftsmanship and exquisite shapes, reaching the highest level of casting craftsmanship at that time. Sanxingdui goldware uses hammering, molding and pasting as the main techniques, reflecting the superb craftsmanship of China's Bronze Age.