Architecture of Mongolia
The Xiongnu confederation ruled present-day Mongolia from the third century BCE through the first century CE, living in portable, round tents on carts and round yurts. The Xiongnu aristocracy lived in small palaces, and their villages were protected by huge walls. S. I. Rudenko also mentions capital construction built of logs. Archaeological excavations indicate that the Xiongnu had towns; their chief city was Luut Hot (Dragon City).
Huchuquan
During the tumultuous period between 189 and 215, Huchuquan was outside the interest of the Chinese annals. Nothing is known about the life and events of the southern Xiongnu, who numbered in excess of 100,000. In compliance with treaties, a cavalry division headed by Western Jükü-Prince Kyuibi served as bodyguard troops for the figurehead Han sovereign Emperor Xian, who was a hostage of various warlords vying to rule in his name. However, with the consolidation of power and the emperor's return to Luoyang, the Han central government attempted to assert control over the southern Xiongnu. In 215. Huchuquan was invited to meet the Han chancellor Cao Cao, but was detained, stripped of royal status, and replaced with a puppet Chanyu, the Western Jükü-Prince Kyuibi, from an ineligible line. By that time, the Western Jükü-Prince Kyuibi was released from guardianship duty and returned to his horde in Pingyang to rule the five remaining southern Xiongnu tribes, a far cry from the 80 tribes that sought safety in China in the 50s BC. Nothing is known about the fate of the southern Xiongnu who deposed Huchuquan.