《明史·列传·卷六十六》
东起清水营，西抵花马池，连绵一千七百七十里，凿崖筑墙，又在其下挖濠沟，一直连绵不绝。
东起清水营，西抵花马池，延袤千七百七十里，凿崖筑墙，掘堑其下，连比不绝。
Starting from Qing Shuiying in the east and reaching Huamach池 in the west, it stretched 1,770 miles, chiseled cliffs, built walls, and dug ditches below them, all the way to the end.