Han–Xiongnu War
In 119 BC, when the Xiongnu suffered a catastrophic defeat by the Han armies, the Chanyu moved his court (located in present-day Inner Mongolia) to another location north. This had the desired result that the Xiongnu were separated the Wuhuan people, which also prevented the Xiongnu from exacting many resources from the Wuhuan. The Han court placed the Wuhuan in tributary protection and resettled them in five northeastern commandaries, namely Shanggu, Yuyang, Youbeiping (present-day Hebei), Liaoxi, and Liaodong (present-day Liaoning). A new office, the Colonel-Protector of the Wuhuan, was established (near present-day Beijing) in order to prevent contact between the Wuhuan with the Xiongnu and to use them to monitor the Xiongnu activities. Nevertheless, the effective Han control over the Wuhuan was lacking through much of the Western Han period, since the Xiongnu had considerable military and political influence over the Wuhuan while relations between the Wuhuan and Han often remained strained at best. This can be exemplified by a situation in 78 BC, when the Xiongnu led a punitive campaign against the Wuhuan, resulting in General Fan Mingyou (范明友) leading a Han army to impede further incursions. When they learned that the Xiongnu had left by the time the army arrived, the Han court ordered Fan to attack the Wuhuan instead, killing 6000 Wuhuan men and three chieftains, since the Wuhuan had recently raided Han territory. Only in 49 AD, when 922 Wuhuan chieftains submitted during Emperor Guangwu's reign, did many of the Wuhuan tribes come under tributary system of the Han empire. The Han court provided for the Wuhuan and in return the Wuhuan tribes guarded the Han frontier against the Xiongnu and other nomadic peoples.
Xiongnu
Within the Xiongnu culture more variety is visible from site to site than from "era" to "era," in terms of the Chinese chronology, yet all form a whole that is distinct from that of the Han and other peoples of the non-Chinese north. In some instances iconography can not be used as the main cultural identifier because art depicting animal predation is common among the steppe peoples. An example of animal predation associated with Xiongnu culture is a tiger carrying dead prey. We see a similar image in work from Maoqinggou, a site which is presumed to have been under Xiongnu political control but is still clearly non-Xiongnu. From Maoqinggou, we see the prey replaced by an extension of the tiger's foot. The work also depicts a lower level of execution; Maoqinggou work was executed in a rounder, less detailed style. In its broadest sense, Xiongnu iconography of animal predation include examples such as the gold headdress from Aluchaideng and gold earrings with a turquoise and jade inlay discovered in Xigouban, Inner Mongolia. The gold headdress can be viewed, along with some other examples of Xiongnu art, from the external links at the bottom of this article.