《资治通鉴·唐纪·唐纪十四》
如今我等以高丽兵十多万，望见旌旗即遭溃败，高丽人闻风丧胆，乌骨城首领多老迈无用，很难坚守城池，如果唐军移师临近该城，早晨到晚上即可攻克，其余中途挡道的小城，必定望风溃逃。
今奴以高丽十馀万众，望旗沮溃，国人胆破，乌骨城耨萨老耄，不能坚守，移兵临之，朝至夕克。其馀当道小城，必望风奔溃。
Now with over one hundred thousand of Goguryeo soldiers, we are defeated at the sight of banners. The people of Goguryeo are panicking, and the chiefs of Ubone Castle are mostly old and useless. It is hard to defend the city. If the Tang army moves near to the city, it can be seized from morning to night, and other small cities blocking the way on the road will definitely flee panic-stricken.