This bookcase consists of an upper shelf whose front is open while its sides and back are closed in; a mid-shelf fitted with two drawers; and a lower shelf with a hinged door to make a cabinet. The legs of the case feature air holes shaped like the wings of a bat. At the center of the door planks is a circular padlock plate engraved with trigram designs. The door planks and the post are connected by swallow-shaped hinges.