《左传·襄公·襄公十五年》
夏季，齐灵公包围成地，这是因为齐国对晋国有了二心的缘故。
夏，齐侯围成，贰于晋故也。
In the summer, Duke Ling of Qi besieged Cheng, because Qi had a second heart towards Jin.
<s>[INST] Convert the following English text into Classical Chinese: In the summer, Duke Ling of Qi besieged Cheng, because Qi had a second heart towards Jin. [/INST] 夏，齐侯围成，贰于晋故也。</s>
Convert the following English text into Classical Chinese: In the summer, Duke Ling of Qi besieged Cheng, because Qi had a second heart towards Jin.
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夏，齐侯围成，贰于晋故也。
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