《后汉书·列传·儒林列传下》
过了几个月，诸生上言张玄兼说《严氏》、《冥氏》，不应当专做《颜氏》博士。
居数月，诸生上言玄廉说《严氏》、《冥氏》，不宜专为《颜氏》博士。
A few months later, all the scholars said that Zhang Xuan was also talking about "Yan family" and "Ming family", and that he should not be a special "Yan family" doctor.