《资治通鉴·隋纪·隋纪六》
东海人李子通，有勇有力，他先依附长白山贼帅左才相，群盗都很残忍，只有李子通宽厚仁慈，于是很多人都去归附他。不到半年，李子通就拥有部众一万人。
东海李子通，有勇力，先依长白山贼帅左才相，群盗皆残忍，而子通独宽仁，由是人多归之，未半岁，有众万人。
Li Zhitong from the East Sea was brave and strong. At first he allied himself with the rebel leader Zuo Caixiang from Changbai Mountain. The rebels were all extremely cruel but Li Zhitong was lenient and benevolent and so many people came and surrendered to him. In less than six months Li Zhitong had over ten thousand followers.