《元史·本纪·卷十三》
永昌、腾冲二城在缅国和金齿之间，城垣毁坏坍塌，无法抵御敌人，皇帝敕命修整。
永昌、腾冲二城在缅国、金齿间，摧圮不可御敌，敕修之。
Yongchang and Tengchong are located between Burma and Jinsi. Their city walls were destroyed and collapsed, making them vulnerable to enemies. The emperor ordered them to be repaired.