《魏书·列传·卷十九》
于忠向崔光求计，崔光说： 应当把胡嫔安置到别的地方，严加守卫，必定万无一失，这是上策。 
忠请计于崔光，光曰： 宜置胡嫔于别所，严加守卫，理必万全，计之上者。 
Yu Zhong sought advice from Cui Guang, who said: Consort Hu should be moved to another place and closely guarded, and then nothing will go wrong, and that's the best course of action.