《宋书·志·卷三十五》
遂安令，孙权时分割歙地置新定县，晋武帝太康元年改称遂安。
遂安令，孙权分歙为新定县，晋武帝太康元年更名。
Suian Command. Sun Quan split off She territory to establish Xinding county, renamed Suian in the first year of Tai Kang reign in the Jin Dynasty.