Modu Chanyu
After forging internal unity, Modu Chanyu expanded the empire on all sides. To the north he conquered a number of nomadic peoples, including the Dingling of southern Siberia. He crushed the power of the Donghu people of eastern Mongolia and Manchuria as well as the Yuezhi in the Hexi Corridor of Gansu, where his son, Jizhu, made a skull cup out of the Yuezhi king. Modu also reoccupied all the lands previously taken by the Qin general Meng Tian.