This vessel is of a type called hu by the Chinese archaeologists who unearthed similar vessels at the Chengzi site in Zuchengxian, Shandong province, from the stratum corresponding to the Longshan culture. See Kaogu xuebo, 1980, No. 3, p. 367, fig. 33 and another included in the Inaugural Exhibition of the Museum of East Asian Art, Bath, England, vol. I, 1993, Chinese Ceramics, no. 2