Kunming long profited from its position on the caravan roads through to South-East Asia, India and Tibet. Early townships in the southern edge of Lake Dianchi (outside the contemporary city perimeter) can be dated back to 279 BC, although they have been long lost to history. Early settlements in the area around Lake Dian date back to Neolithic times. The Dian Kingdom, whose original language was likely related to Tibeto-Burman languages was also established near the area.
Dian was subjugated by the Chinese Han Dynasty under the reign of Emperor Wu of Han in 109 BC. The Han Dynasty incorporated the territory of the Dian Kingdom into their Yizhou Commandery, but left the King of Dian as the local ruler.
The Han Dynasty (205 BC–AD 220), seeking control over the Southern Silk Road running to Burma and India, brought small parts of Yunnan into China's orbit, though subsequent dynasties could do little to tame what was then a remote and wild borderland. During the Sui dynasty (581–618), two military expeditions were launched against the area, and it was renamed Kunzhou in Chinese sources
