The excavation of Zone III of the Xiaonanshan site in Raohe County, Heilongjiang Province in 2015

In 2015, the Heilongjiang Provincial Institute of Cultural Relics and Archaeology excavated at Xiaonanshan site on the bank of Ussuri River in southeast Raohe County, Heilongjiang Province. The excavation was conducted in three zones, with nine Neolithic burials recovered in Zone III. Most burials were in northeast-southwest orientation and consisted of two parts: a cairn above ground, and a grave below the cairn. Pottery wares, lithic tools, and jades were unearthed from these burials. The cultural remains represented by these eight early phase burials are the first of their kind discovered in China and represent a new archaeological culture: the Xiaonanshan culture. The 14C data of this culture provided dates of 7,890±30 BP and 8,150±30 BP, preceding Xinkailiu culture. This excavation has filled a blank on early Neolithic cultures in eastern Heilongjiang and provided new materials for the studies on the origination and diffusion of the jade culture in East Asia.