This mandarin duck shaped box was discovered floating on water in the west chamber. The duck’s head can be turned into different directions since it is connected to the body via mortise. On the back there is a square lid with empaistic dragons, under which there is storing space. The duck has a black lacquer color base. Its neck and stomach is painted with red lacquer and decorated with small yellow circles. Jagged lines in red and yellow are painted on the wings and the tail and dragon scales are painted on the feet.
On both side of its stomach, two paintings are surrounded by rope shaped frame, presenting a scene where people play drums and bells while dancing. The paintings present us with useful information about ancient performance and a convincing way by which chime bells were played.