《南齐书·志·卷十五》
益曲丞塱五年，刺史董住壁开始建置，统辖二县，没有民户，从此以后都如此。
益宁郡永明五年，刺史董仲舒启置，领二县，无民户，自此已后皆然也。
Yiqu-cheng-lang five years, Prefect Dong Zhu'an began construction, governing two counties, there were no civilian households, from then on they were like this.