《新唐书·列传·卷七十四》
杨炎一心要罗织他的罪状，知道庾准和刘晏有旧仇，就提升他任荆南节度使。
炎必欲傅其罪，知庾准与晏素憾，乃擢为荆南节度使。
Yang Yan was determined to put together charges against him and knew that Yu Zhun and Liu Yan bore an old grudge, so he promoted him to be Ji'nan Jiedushi.