《资治通鉴·梁纪·梁纪二》
巴西太守庞景民占据郡城，拒不投降，郡中之民严玄思聚集群众，自封为巴州刺史，投附于北魏，攻打庞景民并将他斩首。
巴西太守庞景民据郡不下，郡民严玄思聚众自称巴州刺史，附于魏，攻景民，斩之。
Prefect Pang Jingmin of Brazil occupied the provincial capital and refused to surrender. The local Yan Xuanseng gathered a crowd, declared himself as the Prefect of Bazhou, submitted to Northern Wei, attacked Pang Jingmin, and beheaded him.