《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.
<s>[INST] Translate the following Classical Chinese text into modern Chinese: 永昌、腾冲二城在缅国、金齿间，摧圮不可御敌，敕修之。 [/INST] 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。</s>
Translate the following Classical Chinese text into modern Chinese: 永昌、腾冲二城在缅国、金齿间，摧圮不可御敌，敕修之。
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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。
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