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Changqing Alliance between Tang and Tibet

Type Event Region China Time 821–822

In 821–822, the Tang and the Tibetan Empire held alliance meetings and erected steles at Chang'an and Lhasa, reaffirming friendship, demarcating bord…

Timeline

  1. 821Chang'an · ShaanxiEmperor Muzong of Tang and the Tibetan emperor Trisong Detsen successively sent envoys, restarting peace talks amid a military stalemate on the frontier, with formal negotiations on ceasefire and border issues.
  2. 821–822Lhasa · TibetThe Tang and Tibet erected alliance steles at the western outskirts of Chang'an and at Lhasa respectively; the inscriptions, carved in Chinese and Tibetan, declared friendship, mutual respect for borders, non-aggression, and rules for envoy exchanges.
  3. 822–830Tang-Tibet frontier · ChinaAfter the alliance, large-scale warfare along the Tang-Tibet frontier temporarily ceased, envoy exchanges resumed, and the Hexi-Longyou to Jiannan front entered a period of relative peace, providing a window for internal reforms on both sides.

Sources