The Tiele, also named Gaoche or Gaoju, were a tribal confederation of Turkic ethnic origins living to the north of China proper and in Central Asia, emerging after the disintegration of the confederacy of the Xiongnu. Chinese sources associate them with the earlier Dingling.
The names "Chile" and "Gaoche" first appear in Chinese records during the campaigns of Former Yan and Dai in 357 and 363 respectively. However, the protagonists were also addressed as "Dingling" in the records of the Southern Dynasties. The name Gaoche ("high cart") was a nickname given by the Chinese.
Book of Jin, compiled by Fang Xuanling et al., listed Chile as the fifth of 19 Southern Xiongnu tribes (種). By the time of the Rouran domination, the Gaoche comprised six tribes and twelve clans (姓).
The Gaoche are probably remnants of the ancient Red Di. Initially they had been called Dili. Northerners take them as Chile. Chinese take them as Gaoche Dingling. Their language, in brief, and Xiongnu [language] are the same yet occasionally there are small differences. Or one may say that they [Gaoche] are the junior relatives of the Xiongnu in former times.
The Gaoche migrate in search of grass and water. They dress in skins and eat meat. Their cattle and sheep are just like those of the Rouran, but the wheel of their carts are high and have very many spokes.
The predecessors of Huihe were Xiongnu. Because, customarily, they ride high-wheeled carts. They were also called Gaoche during the Yuan Wei times, or also called Chile, mistakenly rendered as Tiele.
One group known as the Eastern Gaoche (东部高车) probably dwelled from the Onon River to Lake Baikal (巳尼陂). However, their relationship with the rest of the Gaoche and its tribal components is unclear.
The Book of Wei preserved the Gaoche's origin myth.
According to legends, the Xiongnu Chanyu had two daughters, both extremely beautiful. The people of the country all thought them to be spirits. The Chanyu said: "How could I find husbands for my daughters! I am going to give them to Heaven.