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.
Jin Midi
Jin Midi was born in 134 BC to a royal Xiongnu family. He was the heir apparent to Xiongnu's Prince of Xiutu, one of the major princes under the supreme ruler of the Xiongnu, the "Chanyu" Gunchen. After Gunchen's death in 126 BC, his brother Ichise succeeded him. During this time, the Prince of Xiutu and another major prince, the Prince of Hunye, were responsible for defending Xiongnu's southwestern border with Han Dynasty – modern central and western Gansu.