Emperor Wen of Han
During the reign of Emperor Wen of Han, Modu's son Laoshang Chanyu defeated Yuezhi again in 162 BCE, forcing the westward exodus of majority of the Yuezhi survivors (later known as the Greater Yuezhi) into Central Asia, while the small portion of Yuezhi population that didn't migrate (known as the Lesser Yuezhi) was forced to mixed among the Qiang people and become the subjects of Xiongnu's Worthy Prince of the Right. At this point, the Hexi Corridor was under complete Xiongnu control, mainly occupied by the two tribes of Hunye and Xiutu.