 It comprised various vassal protectorates, under the nominal authority of a Chief Protector of the Western Regions, appointed by the Han court.In the Han–Xiongnu War of the 2nd Century BCE the Chinese state established a military seat at Wulei (near present-day Cedaya 策达雅, in Bugur/Luntei County).They aimed to control the diverse peoples and cultures of the Western Regions at the time, including several groups who originated in Western Eurasia and/or who spoke Indo-European languages.