Hailuoshi

Sutuhu (; , died 56 AD), also known as Bi (比), was the son of Wuzhuliu, and uncle of Punu Chanyu. Sutuhu was too young to succeed his father in 13 AD, so his uncle Wulei became chanyu, and he was demoted down the line of succession. Wulei's successor Huduershidaogao stationed Sutuhu in the southeast on the border of Wuhuan territory. Huduershidaogao's successor Wudadihou only lived for a few months and was succeeded by his brother Punu in 46 AD.

At the time, the Xiongnu were suffering experiencing a severe drought in their territory as well as raids from the Wuhuan. Sutuhu offered to act as an agent to ask for aid from the Han dynasty. When Punu's officers heard of this they recommended that Sutuhu be arrested and executed. Sutuhu received warning of their advice to Punu and in retaliation gathered some 50,000 men to attack the officers. Punu's response to this challenge was lackluster and sent only some 10,000 men, who fled at the sight of Sutuhu's larger army. Afterwards, Sutuhu moved south to the Ordos region. In the winter of 48/49 AD, Sutuhu gained an alliance with the Han, and proclaimed himself Bi Chanyu.