《魏书·列传·卷二十九》
外援已经降服，然后再攻打姑臧这座孤城，占领它真是易如反掌。 世祖说： 很好。 
外援既服，然后攻其孤城，拔之如反掌耳。 世祖曰： 善。 
If these reinforcements are subdued, then we can attack the isolated city of Guxang, and capturing it will be as easy as flipping our hands. Shizu said: Very good.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 外援既服，然后攻其孤城，拔之如反掌耳。 世祖曰： 善。  [/INST] If these reinforcements are subdued, then we can attack the isolated city of Guxang, and capturing it will be as easy as flipping our hands. Shizu said: Very good.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 外援既服，然后攻其孤城，拔之如反掌耳。 世祖曰： 善。
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If these reinforcements are subdued, then we can attack the isolated city of Guxang, and capturing it will be as easy as flipping our hands. Shizu said: Very good.
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