Wei Gao
He was a long-time ( from 785 to 805 ) military governor ( "Jiedushi" ) of Xichuan Circuit ( 西川 , headquartered in modern Chengdu , Sichuan ) who was most known for his campaigns against Tibetan empire and his reopening of relationship between Tang and Nanzhao . 
<triplet> Chengdu <subj> Sichuan <obj> located in the administrative territorial entity <triplet> Sichuan <subj> Chengdu <obj> capital