Лисянь
Although Tibetan forces were fighting the Chinese between 799 and 803, with battles in Yanzhou (鹽州, present day Yanchi County, Ningxia), Lingzhou (麟州, Zoigê County, Sichuan), Weizhou (維州, Li County, Sichuan), Yazhou (雅州, Ya'an, Sichuan) and Suizhou (巂州, Xichang, Sichuan), envoys began travelling regularly from 804 onwards between Lhasa and China, although no formal treaty was signed. When Emperor Dezong died in 805, Ralpacan sent gifts of gold, silver, cloth, oxen and horses for the funeral.