Chinese armies drive the Xiongnu back across…

Chinese armies drive the Xiongnu back across the Great Wall between 130 and 121 BCE, weaken their hold on Gansu Province as well as on what is now Nei Monggol Autonomous Region (Inner Mongolia), and finally push them north of the Gobi into central Mongolia.

Following these victories, the Chinese expand into the areas later known as Manchuria, the Korean Peninsula, and Inner Asia.

The Xiongnu, once more turning their attention to the west and the southwest, raid deep into the Oxus Valley between 73 and 44 BCE.

The descendants of the Yuezhi and their Chinese rulers, however, will form a common front against the Xiongnu and repel them.