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).
Xiongnu
In 215–216 AD, the warlord-statesman Cao Cao detained Huchuquan Chanyu in the city of Ye, and divided his followers in Shanxi into five divisions: left, right, south, north, and centre. This was aimed at preventing the exiled Xiongnu in Shanxi from engaging in rebellion, and also allowed Cao Cao to use the Xiongnu as auxiliaries in his cavalry.