《周书·本纪·卷四》
庚申日，下韶说： 三十六国，九十九姓，自从魏氏南迁后，都被称为河南之民。
庚申，诏曰： 三十六国，九十九姓，自魏氏南徙，皆称河南之民。
On gengshen day, announced an imperial decree: Thirty-six nations, ninety-nine surnames, since the Wei clan moved south, have all been called people of Henan.