Su Wu
The Xiongnu practiced marriage alliances with Han dynasty officers and officials. The older sister of the Chanyu (the Xiongnu ruler) was married to the Xiongnu General Zhao Xin, the Marquis of Xi who was serving the Han dynasty. The daughter of the Qiedihou Chanyu was married to the Han Chinese General Li Ling after he surrendered and defected. The Yenisei Kirghiz Khagans claimed descent from Li Ling. Another Han Chinese General who defected to the Xiongnu was Li Guangli who also married a daughter of the Chanyu. The Han Chinese diplomat Su Wu married a Xiongnu woman given by Li Ling when he was arrested and taken captive. Han Chinese explorer Zhang Qian married a Xiongnu woman and had a child with her when he was taken captive by the Xiongnu. Han Emperor Wu dispatched the Han Chinese explorer Zhang Qian to explore the mysterious kingdoms to the west and to form an alliance with the Yuezhi people in order to combat the Xiongnu. During this time Zhang married a Xiongnu wife, who bore him a son, and gained the trust of the Xiongnu leader.