HEILONGJIANG AREA, NEOLITHIC PERIOD OR HONGSHAN CULTURE, CIRCA 3500 BC

Compare with a bi of similar shape dicovered at Mt Wenggeng, Tailai County, Helongjiang Province, now in the Tailai County Museum and illustrated in Heilongjiang gudai yuqi, Beiing, 2008, p. 40 (fig. 1), which is slightly smaller in size (8.93 cm. long) and of green tone with extensive russet inclusions. The quality of the current bi is exceptional with its even white tone and unctuous texture.