《宋史·列传·卷四十三》
唐代有大内，又有大明宫，大明宫在大内的东北，世人称之为东内，唐高宗以后，天子多住在东内。
唐有大内，又有大明宫，宫在大内之东北，世谓之东内，高宗以后，天子多在。
During the Tang Dynasty, there was the “inner palace” as well as the Daming Palace. The Daming Palace was in the northeast of the inner palace, and people called it the “eastern inner palace.” After Emperor Gaozong, most emperors preferred to reside in the “eastern inner palace.”