Xiongnu
The Xiongnu () were a confederation of nomadic peoples who, according to ancient Chinese sources, inhabited the eastern Asian Steppe from the 3rd century BC to the late 1st century AD. Chinese sources report that Modu Chanyu, the supreme leader after 209 BC, founded the Xiongnu Empire.
Xiongnu
After Modu, later leaders formed a dualistic system of political organisation with the left and right branches of the Xiongnu divided on a regional basis. The "chanyu" or "shanyu", a ruler equivalent to the Emperor of China, exercised direct authority over the central territory. Longcheng (蘢城), near the Orkhon inscriptions in modern Mongolia, became the annual meeting place and served as the Xiongnu capital.