《宋书·列传·卷五十》
世祖认为历下是要害之地，想迁移青州治所共同镇守历城，朝廷建议不一。
世祖以历下要害，欲移青州并镇历城。
Emperor Shizu believed that Lixia was a strategic location and wanted to move the seat of Qingzhou to Licheng for joint defense, but the court's advice was not unanimous.