《北史·列传·卷四十七》
保定四年，周军东讨，西部边境空虚，朝廷担心羌、浑等夷族侵扰，便命李贤为河州总管。
四年，王师东讨，西道空虚，虑羌、浑侵扰，乃授贤河州总管。
In the fourth year of Baoding, the Zhou army marched east and the western frontier was left open. Worried that the Qiang and Hun peoples would take advantage of this, the imperial court appointed Li Xian as Governor-General of Heshui.
<s>[INST] Convert the following modern Chinese text into Classical Chinese: 保定四年，周军东讨，西部边境空虚，朝廷担心羌、浑等夷族侵扰，便命李贤为河州总管。 [/INST] 四年，王师东讨，西道空虚，虑羌、浑侵扰，乃授贤河州总管。</s>
Convert the following modern Chinese text into Classical Chinese: 保定四年，周军东讨，西部边境空虚，朝廷担心羌、浑等夷族侵扰，便命李贤为河州总管。
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四年，王师东讨，西道空虚，虑羌、浑侵扰，乃授贤河州总管。
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