《容斋随笔·卷四·孟蜀避唐讳》
蜀本石刻《九经》都是后蜀孟昶时刻的，书中遇到 渊、世民 三字都缺一画，这是给唐高祖、唐太宗避讳呀！
蜀本石《九经》皆孟昶时所刻，其书 渊、世民 三字皆缺画，盖为唐高祖、太宗讳也。
The Shu stone carvings of the "Nine Classics" are all engraved during the time of Meng Chang of the Later Shu. The characters "Yuan" and "Shimin" are missing a stroke in the book to avoid taboo for Tang Gaozu and Tang Taizong!