 Complete the following phrase:  Pang Tong was from Xiangyang Commandery 襄陽郡; present-day Xiangyang, Hubei. He initially served as a minor official in Nan Commandery 南郡; around present-day Jingzhou, Hubei before becoming an adviser to the warlord Liu Bei in 209. In the early 210s, he accompanied Liu Bei on 