《汉书·传·匈奴传下》
置离的哥哥狐兰支率领部众二千多人，驱赶着牲畜，全国逃亡投降了匈奴，单于接受了。
置离兄狐兰支将人众二千余人，驱畜产，举国亡降匈奴，单于受之。
Xuda’s elder brother Hulanqi led over two thousand of his followers, drove their livestock, and escaped to surrender to the Xiongnu. The Chanyu accepted them.
<s>[INST] Kindly elucidate the central themes in this passage in English: 置离兄狐兰支将人众二千余人，驱畜产，举国亡降匈奴，单于受之。 [/INST] Xuda’s elder brother Hulanqi led over two thousand of his followers, drove their livestock, and escaped to surrender to the Xiongnu. The Chanyu accepted them.</s>
Kindly elucidate the central themes in this passage in English: 置离兄狐兰支将人众二千余人，驱畜产，举国亡降匈奴，单于受之。
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Xuda’s elder brother Hulanqi led over two thousand of his followers, drove their livestock, and escaped to surrender to the Xiongnu. The Chanyu accepted them.
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