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.
Cong (surname)
The Congs are originally of Xiongnu origin. They trace their ancestry to King Xiutu of the Xiongnu. In 121 BC, Xiongnu King Hunxie killed King Xiutu when Xiutu refused to surrender to the Chinese with Hunxie. The fourteen-year-old Crown Prince Midi was taken to China and raised as a stable hand. One day, when Emperor Wu of Han was inspecting the horses with his wives, all the servants were mesmerized by the royal entourage, except for Midi. Emperor Wu of Han took favor of the prince and granted him the Chinese surname Jin, meaning gold, because the prince used to make sacrifices with golden statues as a part of the Xiongnu rituals.