Wuwei Chanyu

Neither party succeeded in their main objective, but the Chinese further undermined the Xiongnu's' situation by splitting off their Wusun branch.

In the autumn of 111 BC, Gongsun He and Zhao Ponu led 25,000 cavalry against the Xiongnu, but failed to engage them.

[3] In 110 BC Wudi assembled in Shuofang (朔方城) a 180,000-strong cavalry army, and sent Guo Ji to notify Chanyu about the mobilization.

Guo Ji told him: “If the Chanyu is in a position to mount a campaign and fight with the Chinese state, the Son of Sky himself, he is waiting for you at the border with an army; and if he is not in a position to fight, he should turn his face to the south and recognize himself a vassal of the House of Han.” Wuwei was so enraged by this ultimatum that he immediately beheaded his master of ceremony and arrested Guo Ji, sending him off to Baikal in exile.

At one point Wuwei was persuaded to pay a visit to Chang'an but cancelled the trip when news reached him that an advance Xiongnu dignitary had died on the way there.