Chizhishizhuhou Chanyu
The southern Xiongnu were a branch of the eastern Xiongnu that followed the rebellious pretender Huhanye and in 51-53 BC moved en masse within the Han borders under protection of Chinese. Since the times of Huhanye, the status of the southern Xiongnu was loyal allies of the Han Dynasty. The southern Xiongnu enjoyed material support of the old "heqin" treaty, and in return guarded the Chinese northern borders and participated in the Chinese external and internecine conflicts as long as the Chinese court respected their independence. However, when the Han imperial court attempted to appoint an ineligible for the crown Western Jükü-Prince Yufuluo from ineligible Right Wing as a Chanyu, instead of respecting the traditional election, the southern Xiongnu dissented and elected a lawful alternate Hyuibu Gudu-heu. Later they expelled Yufuluo, who had to seek safety in exile at the Han imperial court.
Shuofang
In the chaos of the rebellions that took place during the end of the Qin Dynasty, the Xiongnu once again moved into the area and took control, and retained this area even after the foundation of the Han Dynasty, using it as an important staging post for raiding into northern and northeastern China. It was only during the Han–Xiongnu War launched by Emperor Wu that the Han Dynasty proactively sought to take over the former borderlands of the Qin Dynasty. In 127 BC, an expedition led by Wei Qing defeated the Xiongnu, leading to the foundation of Shuofang Commandery; by 8 BC the commandery had ten constituent counties.