《周书·列传·卷四十九》
自离石以西，安定以东，方圆七八百里，居住于山谷之间，种族部落很多。
自离石以西，安定以东，方七八百里，居山谷间，种落繁炽。
From Lishi to the west and Anding to the east, within a radius of about seventy or eighty miles, they lived in the mountains and valleys, with many races and tribes.