New Book of Tang: He captured Liaodong City.; Samguk Sagi: Li Shiji attacked Liaodong fortress day and night for twelve days; Emperor Taizong of Tang…
He captured Liaodong City.
甲申，克遼東城
Location: 新唐書 卷002 太宗 貞觀19年5月
Li Shiji attacked Liaodong fortress day and night for twelve days; Emperor Taizong of Tang joined and took it, making it Yozhou.
李世勣攻遼東城，晝夜不息，旬有二日。
Location: 卷21 寶藏王上 4年
In April 645 (Jiashen day), as the south wind grows strong, the emperor sends elite troops up the siege towers, burns the southwest tower, and the fire spreads into the city; officers and men climb the walls; Goguryeo fights hard but cannot win, the city falls, over 10,000 are killed, and it is made Liaozhou.
甲申，南風急，上遣銳卒登沖竿之末，爇其西南樓，火延燒城中，因麾將士登城，高麗力戰不能敵，遂克之，所殺萬餘人，得勝兵萬餘人，男女四萬口，以其城為遼州。
Location: 권197 645년 항