《北齐书·列传·卷二十八》
而当朝忽视抛弃造一仪礼，由来已久，将相多娶公主为妻，王侯娶皇后的亲族，所以没有侍妾，习以为常。
而圣朝忽弃此数，由来渐久，将相多尚公主，王侯娶后族，故无妾媵，习以为常。
While the current dynasty has neglected and abandoned the creation of a ritual system, for a long time, many prime ministers and generals have married princesses as wives, and princes and marquises have married relatives of the empress, therefore having no concubines, taking it for granted.