The Chinese Warring States period wine pot, from the 5th to 4th centuries BC, is now collected at the Minneapolis Museum of Art. During the Warring States period, a new trend of bronze decoration emerged, which used inlay techniques to depict more vivid painting scenes. Generally speaking, inlay involves inserting very thin gold, silver, or copper foil wires into thin lines engraved on the copper surface. The technique of decorating copperware with turquoise or even rarer turquoise has existed since the Erlitou Culture period. In the late Spring and Autumn period and the Warring States period, this technique, which now includes more gold and silver inlay, began to be widely used, and the most exquisite vessels and accessories, such as hooks, were made during this period.