《资治通鉴·唐纪·唐纪二十七》
辛未，契丹族首领李失活和奚族首领李大各率部下归顺唐朝。
辛未，契丹李失活、奚李大酺帅所部来降。
On Xinwei (25 September 720), the Khitan chief Li Shihuo and the Xi chief Li Da each led their tribesmen in surrendering to the Tang dynasty.