A dui is a type of Chinese ritual bronze vessel used in the late Zhou dynasty and the Warring States period of ancient China. It was a food container used as a ritual vessel. Most dui consist of two bowls supported on three legs. Form The dui is typically spherical in shape, possessing a half-domed bowl on bottom with a similarly shaped container fitting on top. Shapes vary from circular, ovular, or subcircular. Types from the late Eastern Zhou appear more spheroidal; containers become more ovular during the Spring and Autumn period; and transitioning from the late Spring and Autumn to the Warring States period, vessel types appear less round in shape, possessing a flattened lid paired with a rounded bowl. The vessel stands on either a single pedestal or is supported by three legs (similarly to the ding). The three legs would permit heating of the food within. Each vessel sports two handles; either set or unfixed rings adorn the bottom portion of the vessel, allowing for easy transport. Decor The containers themselves possess highly intricate detailing, varying in geometric and curvilinear designs distributed in symmetrical registers. Many of these carvings assume biomorphic forms, depicting typical animal imagery found throughout ancient China such as cats, snakes, dragons or birds. Much of the designs are in-laid with metal, though few complete renditions still exist. Examples From the specimen found from the Warring States period, proof of copper in-lay can be found in swirling spherical patterns that accentuate the shape of the dui. Incised geometric patterning along with cat-like outlines emanate from the container. Types coming out of the Late Eastern Zhou are spherical in form and possess three animal masks in relief; the heads are situated symmetrically around the lid, mirroring the three ding-like feet supporting the base. Simple linear patterning covers the vessel in clearly defined registers, while high-relief rope bands separate the basin from the lid. From the Warring States period, ovular forms become subcircular shapes. Four fantastical creatures adorn the lid of this period's example, forming upright rings. Animal pendant masks hold moveable rings in their mouths, allowing for easy transport. In-lay patterning surfaces in this example too, with turquoise and silver in typical registers. Curvilinear patterns accentuate the shape; the more prominent bands of decoration portray symmetrical bird figures with intertwining bodies encircling the vessel. Border designs consist of S-shaped bands around the foot, lid, and