History of Mongolia
Although the Xiongnu finally had been split into two parts in AD 48, the Xianbei (or Hsien-pei in Wade–Giles) had moved (apparently from the east) into the region vacated by the Xiongnu. The Xianbei were the northern branch of the Donghu (or Tung Hu, the Eastern Hu), a proto-Mongol group mentioned in Chinese histories as existing as early as the 4th century BC. The language of the Donghu is believed to be proto-Mongolic to modern scholars. The Donghu were among the first peoples conquered by the Xiongnu. Once the Xiongnu state weakened, however, the Donghu rebelled. By the 1st century AD, two major subdivisions of the Donghu had developed: the proto-Mongolic Xianbei in the north and the Wuhuan in the south.
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.