Bronze rectangular Dou inlaid with turquoise
Warring States Period（475-221B.C.）
Unearthed at Jixian, Henan
Dou, food vessel, has deep belly, and it is mostly fitted with a lid. The body of the vessel is decorated with copper and turquoise. The technique is called "inlaying technique", which refers to the technique of decorating bronze objects by inlaying such metal wire or plaques as of gold, silver or copper, or turquoise, lacquer etc. into the grooves engraved on the surface of bronze. The technique was popular in the Spring and Autumn Period （770-476B.C.）and the Warring States Period （475-221B.C.）.