《资治通鉴·汉纪·汉纪八》
齐王后悔通谋叛乱，违背与吴楚的盟约，依据城池进行抵御。
齐王后悔，背约城守。
The King of Qi regretted having colluded in the rebellion and violated the alliance with Wu and Chu. Based on his walled cities, he defended against them.
<s>[INST] Rewrite the following English passage in the style of Classical Chinese: The King of Qi regretted having colluded in the rebellion and violated the alliance with Wu and Chu. Based on his walled cities, he defended against them. [/INST] 齐王后悔，背约城守。</s>
Rewrite the following English passage in the style of Classical Chinese: The King of Qi regretted having colluded in the rebellion and violated the alliance with Wu and Chu. Based on his walled cities, he defended against them.
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齐王后悔，背约城守。
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