《水经注·卷十四》
战国时，卫满在朝鲜称王，建都在王险城，国土几千里。王位传到他的子孙右渠。
战国时，满乃王之，都王险城，地方数千里，至其孙右渠。
During the Warring States Period, Wei Man became king in Korea, and built his capital in Wangxian City, covering a territory of thousands of miles. The throne passed to his son, Youqu.