The first part discusses the strategic status of Yongji in the Sui Dynasty by dissecting the rebellion of Liang Shi-yan and the rebellion of Yangliang.
英
美
- 正文由三部分组成，第一部分主要通过分析梁士彦蒲州之乱和杨谅之乱，论述永济在隋朝的战略地位；
