《周书·列传·卷五十》
魏废帝元年正月，土门出兵进攻茹茹，于怀荒北面大破之。
魏废帝元年正月，土门发兵击茹茹，大破之于怀荒北。
In the first month of the first year of the Emperor Wei Fei, Tumen dispatched troops to attack the Rouran and defeated them at Huaihuang Bei.
<s>[INST] Kindly elucidate the central themes in this passage in English: 魏废帝元年正月，土门发兵击茹茹，大破之于怀荒北。 [/INST] In the first month of the first year of the Emperor Wei Fei, Tumen dispatched troops to attack the Rouran and defeated them at Huaihuang Bei.</s>
Kindly elucidate the central themes in this passage in English: 魏废帝元年正月，土门发兵击茹茹，大破之于怀荒北。
user
In the first month of the first year of the Emperor Wei Fei, Tumen dispatched troops to attack the Rouran and defeated them at Huaihuang Bei.
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