Modu Chanyu

Modu Chanyu was the ruler who transformed the Xiongnu into a powerful steppe confederation in the late third and early second centuries BCE. He seized leadership around 209 BCE and defeated or absorbed rival groups across Mongolia and the eastern Eurasian steppe.

Modu’s forces also defeated an early Han army under Emperor Gaozu and compelled the dynasty to adopt a diplomatic settlement involving gifts and marriage alliances. His reign established the Xiongnu as the dominant northern power confronting Han China for generations.

John Man’s Barbarians at the Wall presents Modu Chanyu as the ruler who transformed the Xiongnu into a formidable steppe confederation capable of forcing the early Han state into warfare, diplomacy, tribute and marriage agreements. Conquering the North places Modu near the beginning of a much longer history of competition among Chinese, Mongolian and Russian powers across Inner Asia. In The Great Wall, the pressure created by the Xiongnu under rulers such as Modu helps explain why successive Chinese states treated walls, forts, garrisons and negotiated frontier systems as parts of the same strategy rather than as a single static barrier.