《后汉书·列传·南蛮西南夷列传》
第二年春天，朝廷派伏波将军马援、中郎将刘匡、马武、孙永等人，率军队到临沅，打败了相单程。
明年春，遣伏波将军马援、中郎将刘匡、马武、孙永等，将兵至临沅，击破之。
In the spring of the following year, the imperial court sent Fubo General Ma Yuan, Zhonglang General Liu Kuang, Ma Wu, Sun Yong and others to lead troops to Linyuan and defeat Xiang Dancheng.
<s>[INST] Kindly elucidate the central themes in this passage in English: 明年春，遣伏波将军马援、中郎将刘匡、马武、孙永等，将兵至临沅，击破之。 [/INST] In the spring of the following year, the imperial court sent Fubo General Ma Yuan, Zhonglang General Liu Kuang, Ma Wu, Sun Yong and others to lead troops to Linyuan and defeat Xiang Dancheng.</s>
Kindly elucidate the central themes in this passage in English: 明年春，遣伏波将军马援、中郎将刘匡、马武、孙永等，将兵至临沅，击破之。
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In the spring of the following year, the imperial court sent Fubo General Ma Yuan, Zhonglang General Liu Kuang, Ma Wu, Sun Yong and others to lead troops to Linyuan and defeat Xiang Dancheng.
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