《北史·列传·卷六十四》
这时，处罗可汗和高昌王来通好，炀帝又任樊子盖检校武威太守，接应二藩王。
时处罗可汗及高昌王款塞，复以子盖检校武威太守，应接二蕃。
At this time, Chuluo Khan and the King of Gaochang came to make peace, and Emperor Yang also appointed Fan Zigai as the Inspector of Wuyi Taishou to meet the two vassal kings.