《资治通鉴·唐纪·唐纪六十六》
南诏留下二万人的军队，让杨思缙据守交趾城，周围山洞里的夷人獠人不管是远是近都归降于杨思缙。
留兵二万，使思缙据交趾城。谿洞夷獠无远近皆降之。
Nanzhao left 20,000 soldiers for Yang Sijian to defend Jiaozhi City and all the barbarians and Yao people in the surrounding mountains near and far surrendered to Yang Sijian.