The Hongshan culture produced some of the earliest known examples of jade working in the world. Their signature artifacts are C-shaped jade pig dragons, enigmatic objects that may represent embryonic dragons or stylized pigs, depending on which scholar you ask. These pieces are carved from nephrite with a precision that implies generations of accumulated craft knowledge. Clay figurines of pregnant women appear throughout Hongshan sites, suggesting fertility rituals or ancestor veneration. Small copper rings have also been excavated, placing the Hongshan among the earliest metalworking cultures in the region. But it is the jade that defines them. Their jade carvings became the template for a tradition that would run, unbroken, through every subsequent Chinese dynasty.

At the archaeological site of Niuheliang, excavators uncovered something that reframed expectations of Neolithic complexity: an underground temple built on stone platforms with painted walls. Inside they found a clay female head with eyes inlaid with jade, along with clay figurines up to three times life-size. Archaeologists named it the Goddess Temple. Cairns on two nearby hilltops contained round and square stepped tombs made of piled limestone, with sculptures of dragons and tortoises entombed within. The combination of monumental architecture, elaborate burial practices, and what appears to be organized religious ritual points toward a society structured around chiefdoms, with social hierarchies, specialized labor, and complex trading networks operating nearly seven thousand years ago.

The Hongshan people were farmers, and their primary crop was millet. Isotope analyses show that millet contributed up to 70 percent of the human diet in the early Hongshan period and up to 80 percent in the late period. They shared this agricultural base with the contemporaneous Yangshao culture of the Yellow River valley, and the two cultures clearly interacted. But around 4,200 years ago, climate change transformed the Hongshan heartland. A 2015 study revealed that the region, long assumed to have been desert for a million years, had actually featured deep lakes and dense forests from 12,000 to 4,000 years ago. As conditions deteriorated, some Hongshan people may have migrated south toward the Yellow River valley, carrying their cultural practices with them.

Archaeologist Guo Dashun has argued that the Hongshan culture represents an important early stage of Chinese civilization, pointing to its mature system of ancestral worship as a practice that persisted throughout all of Chinese history. The question of what language the Hongshan people spoke remains open. Genetic studies from 2013 found that 63 percent of Y-chromosome samples from Hongshan sites belonged to haplogroup N, which today appears at low frequencies among northern Han Chinese, Mongols, Manchu, and other northeast Asian peoples. A 2025 study modeled Hongshan populations as a mixture of Ancient Northeast Asian ancestry and Neolithic Yellow River farmer ancestry introduced by migrants from the Dawenkou culture. Whatever their linguistic identity, the Hongshan left a mark that extends far beyond their West Liao River homeland.