《资治通鉴·唐纪·唐纪三》
乙卯，窦建德又领兵马开赴相州，淮安王李神通闻讯，率领各路兵马到黎阳投靠李世。
乙卯，引兵趣相州，淮安王神通闻之。帅诸军就李世勣于黎阳。
In Yimao, Dou Jiande led his troops to Xiangzhou again. Upon hearing the news, Li Shentong, the King of Huainan, led troops from various routes to Liyang to join Li Shi.