The Wuhuan are a proto-Mongolic nomadic people who inhabit northern China, in what is now the provinces of Hebei, Liaoning, Shanxi, the municipality of Beijing and the autonomous region of Inner Mongolia.They are descended from the Donghu, who were defeated by the Xiongnu.

After the Donghu were defeated by Modu Chanyu around 209 BCE, the Xianbei and Wuhuan survive as the main remnants of the confederation.

The Hou Hanshu says that “the language and culture of the Xianbei are the same as the Wuhuan”.

Tadun of the Wuhuan (died 207 CE) was the ancestor of the proto-Mongolic Kumo Xi (aka Tatabi).

The Weishu (Description of the Khitan, Vol.

1000, 2221) records that the Kumo Xi and Khitan (descendants of the Mongolic Xianbei) spoke the same language.