《资治通鉴·汉纪·汉纪二十一》
土城之外，还有由两层木樯构成的重木城。匈奴人由木城射击，使汉朝远征军多有伤亡。
土城外有重木城，从木城中射，颇杀伤外人。
Beyond the earthen city, there was a double-layered wooden-palisaded heavy city. The Xiongnu attacked with arrows from the wooden city and inflicted heavy casualties on the Han expeditionary force.