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.
History of Siberia
As early as the first millennium BCE, trade was underway over the Silk Road. Silk goods were imported and traded in Siberia.
The establishment of the Xiongnu empire in the 3rd century BCE started a series of population movements. Many people were probably driven to the northern borders of the great Central Siberian Plateau. Turkic people such as the Yenisei Kirghiz had already been present in the Sayan region. Various Turkic tribes such as the Khaka and Uyghur migrated northwestwards from their former seats and subdued the Ugric people.