《隋书·列传·卷三十》
此前，李景府中的井里的上，生长出莲花状的花朵，并有龙出现，时时变为铁马甲士。
先是，景府内井中甃上生花如莲，并有龙见，时变为铁马甲士。
Previously, in the well in Li Jing's residence, a lotus shaped flower had grown and a dragon had appeared, transforming from time to time into an army of men in iron armor.