《新五代史·列传·杂传第四十二》
唐明宗是个武人出身的君主，不懂他们的意思，问什么叫改号，回答说： 唐庄宗接受唐的赐姓成为唐的宗族，接续唐昭宗而登位，因而国号为唐。
明宗武君，不晓其说，问何谓改号，对曰： 庄宗受唐锡姓为宗属，继昭宗以立，而号国曰唐。
As Tang Mingzong was an emperor born from a military background, he did not understand their meaning, so he asked what did changing the reign title mean, they replied: Tang Zhuangzong accepted the surname Tang bestowed by Tang, and became the clan of Tang, he succeeded Emperor Zhaozong of Tang and ascended the throne, that's why the title became Tang.