《明史·志·卷五十三》
洪武二十年，命令国子生武淳等分别巡行州县，随粮划定区域。
洪武二十年命国子生武淳等分行州县，随粮定区。
In the 20th year of the Hongwu period, Wu Chun, a student at the Imperial Academy, was dispatched to carry out inspections together with others in prefectures and counties, demarcating land areas for tax purposes.