Zhangxin Qaghan

'Manifesting sincerity') or Alp Külüg Bilge Qaghan was the eleventh ruler of Uyghurs.

[1] Chinese records state that he sent an embassy led by Princess Taihe to Tang, accompanied with seven women horse-archers and two Shatuo captives on 16 June 835.

[2] His peace policy with China proved him an unpopular ruler.

[3] This led to a rebellion in 839 by the Sogdian official An Yunhe (安允合) and Uyghur minister Chai Lei (柴勒).

Qaghan was able to defeat and kill them, but a subsequent battle against another Uyghur official, general Jueluowu (掘羅勿) along with the Shatuo chief Zhuye Chixin was lost.