The story of Su Wu herding sheep tells that in the first year of Tianhan, Su Wu was ordered to go to Xiongnu as a corps commander and was detained. Xiongnu nobles repeatedly threatened to induce them to surrender.

Later, he went to the North Sea to herd sheep, held Jeff of the Han Dynasty hostage, and threatened to let him go back to China after the ram was born. Su Wu went through hardships and stayed in Xiongnu for nineteen years.

Extended data:

Su Wu, the hero of Su Wu's shepherding, was old after returning to Han Dynasty. Xuan Di asked around: "Su Wu has been in Xiongnu for so long, can he still have children?"

Su Wu stated to Xuan Di through Pingenhou Xu Guanghan: "In the past, when the Huns were sent, the married Xiongnu woman had just given birth to a son named Guo Tong. It is said that she wants to redeem the boy by sending gold, silver and silk through the Han messenger. " Xuan Di agreed.

After Su Suihan returned to Han, he was named Lang. Let Su Xian's son be the right Cao again. Su Wu lived to be in his eighties, and Xuan Di died two years later.