Yiwuzhenmohe Qaghan (Chinese: 易勿真莫賀可汗)[1] or Yaghmurchin Bagha Qaghan (Personal name: Qibi Geleng,[2] Chinese: 契苾歌楞) was a tribal chief of Qibi tribe who ruled briefly over Turkic tribes of Xueyantuo, Tiele and Huihe.
The Tiele there after rebelled and supported Geleng, the chieftain of the Qibi as khagan.
[3] Later, after Western Tujue's Shekui Khan (r. 611-619) came to power, it was said that the Tiele again submitted to Western Tujue rule and that both Geleng and Yishibo renounced their khan titles as part of the submission.
[4] The Xueyantuo would not have another khan until Yishibo's grandson Yi'nan, then a vassal of the Eastern Tujue, rebelled against Eastern Tujue and was created the Zhenzhu Khan by Emperor Taizong of Tang.
Yiwuzhen's nephew Qibi Heli would go on to be a Tang general.