Shimao

Shimao () is a Neolithic site in Shenmu County, Shaanxi, China. The site is located in the northern part of the Loess Plateau, on the southern edge of the Ordos Desert. It is dated to around 2000 BC, near the end of the Longshan period, and is the largest known walled site of that period in China, at 400 ha. It is one of the Yellow River civilizations. The fortifications of Shimao were originally believed to be a section of the Great Wall of China, but the discovery of jade pieces prompted an archaeological investigation, which revealed that the site was of Neolithic age.

The discovery of Shimao has been challenging traditional views favouring the model of the preliminary development of complex societies in the Central Plains. Instead, larger and sophisticated polities such as Shimao already existed outside of the Central Plains, while maintaining independence and inter-connection. Contrary to Sinocentric stereotypes, rather than a periphery or a transfer zone between the Central Plains and the steppe, Shimao may actually have been an economic heartland and technological hub at the center of exchanges, at the origin of many Middle Yellow River traditions, leading for example to the later development of the Erlitou culture.