Whispers from the West Liao River

The Erdaojingzi burials in Chifeng sit within the Late Neolithic horizon of the West Liao River basin, a landscape of braided rivers and loess terraces that long nurtured millet farmers and pastoralists. Archaeological data indicates a continuity of local pottery traditions and stone-tool technologies, punctuated by increasing regional exchange as Bronze Age metallurgy began to ripple outward. Radiocarbon dates associated with the samples fall between 2050 and 1517 BCE, placing these individuals at a threshold when local communities were negotiating new social and technological networks.

Limited evidence suggests that settlements in the region combined small-scale farming with seasonal movement of herds. Material culture — coarse and fine pottery, grindstones, and occasional bronze objects in contemporaneous sites across the basin — evokes communities engaged in crop processing, storage, and long-distance exchange of goods and ideas. The name “West Liao River” reflects this hydrological anchor: river valleys funneled people, plants, and technologies across northeastern China.

Because the genetic dataset from Erdaojingzi currently includes only three individuals, any reconstruction of origins or population dynamics must remain tentative. Nonetheless, when combined with broader archaeological patterns from the Late Neolithic West Liao River zone, these remains offer a cinematic glimpse of communities at a cultural and genetic crossroads.

Three ancient genomes recovered from Erdaojingzi provide an initial genetic window into the Late Neolithic West Liao River population. Y-chromosome results show two distinct paternal markers among analyzed males: lineage NO in one individual and lineage O in another. Both haplogroups are broadly associated with East Asian paternal diversity; NO is commonly found across northern East Asia and parts of northeast Eurasia, while O is widespread in many East and Southeast Asian populations. These assignments suggest local continuity with regional East Asian male lineages rather than a large, recent influx from distant steppe populations.

Mitochondrial haplogroups among the three individuals are N, A22, and B — a mix consistent with the maternal diversity observed across ancient and modern East Asia. Haplogroup N has deep Eurasian roots; A22 and B are frequently encountered in northern and eastern Asian contexts. Together, these maternal markers imply diverse maternal ancestries in a relatively small community.

Because the sample count is very low (n=3), all genetic interpretations must be framed as provisional. Limited sampling can miss population heterogeneity, sex-biased migration, or rare lineages. Nevertheless, in combination with regional aDNA from the Late Neolithic and Bronze Age of northeast China, the Erdaojingzi individuals tentatively point to predominantly East Asian ancestry with local maternal diversity and paternal lineages typical for the region.