《资治通鉴·魏纪·魏纪一》
汉王逃至白帝城，吴将徐盛、潘璋、宋谦等人争相上表请求 继续进攻，一定能够生擒刘备 。
汉主在白帝，徐盛、潘璋、宋谦等各竞表言 备必可禽，乞复攻之。 
When the king of Han fled to Baidi City,  senior Wu officers Xu Sheng, Pan Zhang and Song Qian and others all competed to send memorials asking to carry on attacking, certain that they could capture Liu Bei alive.