Duan stone (Duan Yan) of a nice brown hue decorated at the top with a chilong in relief carved in the mass in a greenish vein. The part intended to receive the water, which is called the sea or the lake, is surrounded by stylized rocks also carved in the green vein. It is contained in a precious wooden box, probably zitan. H 3,5 x L 19,4 x W 12,3 cm