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).
Wusun
The Wusun originally lived between the Qilian Mountains and Dunhuang (Gansu) near the Yuezhi. Around 176 BCE the Yuezhi were raided by the Xiongnu, who subsequently attacked the Wusun, killing their king and seizing their land. The Xiongnu adopted the surviving Wusun prince and made him one of their generals and leader of the Wusun. Around 162 BCE the Yuezhi were driven into the Ili River valley in Zhetysu, Dzungaria, and Tian Shan, which had formerly been inhabited by the Saka (Scythians). The Wusun then resettled in Gansu as vassals of the Xiongnu. In 133–132 BCE, the Wusun drove the Yuezhi out of the Ili Valley and settled the area.