《资治通鉴·唐纪·唐纪五十七》
刘悟向来和李文会相好，当初攻克郓州后，曾派人到登州去请李文会。
悟素与李文会善，既得郓州，使召之，未至。
Liu Wu had always been on good terms with Li Wenhui. After he captured Yuzhou at the start, he sent someone to Dengzhou to invite Li Wenhui.