《汉书·传·张骞李广利传》
又过了两年，汉朝击退匈奴单于并赶往漠北。
后二年，汉击走单于于幕北。
Two years later, the Han dynasty repelled the Chanyu of the Huns and drove him to the north of the Gobi Desert.
<s>[INST] Take each pair of old and new sentences and unite them into a single translation that captures the core meaning: Archaic: 后二年，汉击走单于于幕北。 Updated: 又过了两年，汉朝击退匈奴单于并赶往漠北。 [/INST] Two years later, the Han dynasty repelled the Chanyu of the Huns and drove him to the north of the Gobi Desert.</s>
Take each pair of old and new sentences and unite them into a single translation that captures the core meaning: Archaic: 后二年，汉击走单于于幕北。 Updated: 又过了两年，汉朝击退匈奴单于并赶往漠北。
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Two years later, the Han dynasty repelled the Chanyu of the Huns and drove him to the north of the Gobi Desert.
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