《史记·七十列传·张仪列传》
 假如秦国出动军队攻占魏国国都阳晋，必然像锁住天下的胸膛一样断绝天下的交通要道。
 秦下甲攻卫阳晋，必大关天下之匈。
If the State of Qin send troops to capture the capital of the State of Wei at Yangjin, it will inevitably cut off the vital communications channel of the world as if locking up the chest of the world.
<s>[INST] Convert the following English text into Classical Chinese: If the State of Qin send troops to capture the capital of the State of Wei at Yangjin, it will inevitably cut off the vital communications channel of the world as if locking up the chest of the world. [/INST]  秦下甲攻卫阳晋，必大关天下之匈。</s>
Convert the following English text into Classical Chinese: If the State of Qin send troops to capture the capital of the State of Wei at Yangjin, it will inevitably cut off the vital communications channel of the world as if locking up the chest of the world.
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秦下甲攻卫阳晋，必大关天下之匈。
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