《明史·列传·卷一百五十八》
舟山，也就是宋朝称为昌国城的地方，位于大海之中，有七十二个小岛，是浙江的战略要地。
舟山，宋昌国城也，居海中，有七十二墺，为浙东要害。
Zhoushan, the place that the Song dynasty called Changguo City, is located in the middle of the ocean with seventy-two small islands; it is a strategically important place in Zhejiang.