each carved in the form of a drum with swelling sides rising to a flat top, the sides bordered with a broad recessed panel neatly carved with interlinked double-rings, the rings decorated with striations simulating bamboo nodes, all between two double-bands of studded bosses

Jerry J. Chen and Christophe W. Mao, Permanence: Classical Chinese Stone Furniture, Taipei, 2003, pp. 44-45.