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.
Prehistory of Siberia
Sure statements are possible only since the first millennium BC, when neighbouring literate cultures came into contact with the people of the steppe. In the steppes north of the Black Sea and east of the Caspian Sea, Greek, Assyrian and Persian sources attest to horse nomads, which can be identified as speakers of Iranian languages. The first reports from ancient China of the nomads north of China date from the same period Along with various unidentified groups from Shang and Zhou dynasty texts, the Xiongnu are worthy of mention. Based on personal names and titles transmitted by the Chinese sources, different scholars have attempted to identify the language of the Xiongnu as an early Turkic language, a proto-Mongolic language or a Yeniseian language. At the beginning of the early Middle Ages, the Iranian peoples disappeared and in their place Turkic peoples expanded across the region between the eastern edge of Europe and northeastern Siberia. In the areas to the north of the Asiatic steppes, speakers of Uralic and Palaeo-Siberian languages are suspected to have been settled; in the Middle Ages, Turkic peoples appear here as well, but their prehistoric extent is not clear.