Answer
Administrator was Wei Yan's role in Hanzhong Commandery. After Liu Bei's conquest of Hanzhong in 219, Wei Yan was appointed as its administrator. In this capacity, he was responsible for governing the commandery, overseeing its military and civil affairs, and maintaining order and stability. Wei Yan's effective administration contributed to the consolidation of Liu Bei's control over Hanzhong and its strategic importance as a base for future campaigns.