Still Shengougaolei. Deep trenches and high camp. That a strong defense.
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No. 3
Still Shengougaolei. "Han Qing cloth Biography": "Hanwang income nobility, but also keep Cheng Gao, Ying Yang, Shu Han under the corn, deep groove barriers, sub-Shou Jiao took Serbian Death." See "Shengougaolei."