The bianhu was an innovation of the Eastern Zhou, introduced around 400 BC, with production continuing into the Han dynasty. A gilded bianhu of similar shape with garlic mouth is illustrated by C. Deydier, The Art of the Warring States and Han Periods, London, 1991, pp. 86-7, no. 25, while a smaller version, no. 19, has similar incised decoration. Another bianhu of similar shape, without cover, and with plain body that may be gilded, is illustrated in Chugoku Sengoku jidai no bijutsu (The Art of the Warring States Period), Osaka Municipal Museum of Fine Art, 1991, p. 55, no. 49.