《魏书·列传·卷四十七》
萧衍将领垣孟孙、张僧副等率水军三千人，渡过淮河，北攻统军吕叵。
衍将垣孟孙、张僧副等水军三千，渡淮，北攻统军吕叵。
Xiao Yan's generals Yuan Mengsun and Zhang Sengfu led 3,000 navy men to cross the Huaihe River and attacked the commander Lu Po to the north.
<s>[INST] Translate the following Classical Chinese text into English: 衍将垣孟孙、张僧副等水军三千，渡淮，北攻统军吕叵。 [/INST] Xiao Yan's generals Yuan Mengsun and Zhang Sengfu led 3,000 navy men to cross the Huaihe River and attacked the commander Lu Po to the north.</s>
Translate the following Classical Chinese text into English: 衍将垣孟孙、张僧副等水军三千，渡淮，北攻统军吕叵。
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Xiao Yan's generals Yuan Mengsun and Zhang Sengfu led 3,000 navy men to cross the Huaihe River and attacked the commander Lu Po to the north.
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