《明史·列传·卷一百二十六》
因为城堡坚固，攻克不下，加上李成梁和蓟镇部队也集合了，土蛮于是引兵离去。
以城堡坚，不可克，而成梁及蓟镇兵亦集，乃引去。
Due to the strong fortress, they were unable to conquer it. Additionally, Li Chengliang and the Ji Garrison’s troops had gathered, so the Tuman retreated.
<s>[INST] Translate the following Classical Chinese text into modern Chinese: 以城堡坚，不可克，而成梁及蓟镇兵亦集，乃引去。 [/INST] 因为城堡坚固，攻克不下，加上李成梁和蓟镇部队也集合了，土蛮于是引兵离去。</s>
Translate the following Classical Chinese text into modern Chinese: 以城堡坚，不可克，而成梁及蓟镇兵亦集，乃引去。
user
因为城堡坚固，攻克不下，加上李成梁和蓟镇部队也集合了，土蛮于是引兵离去。
assistant