《新五代史·列传·唐臣传第十三》
年轻时跟随李罕之，随李罕之投奔晋，任匡卫指挥使。
王建及，许州人也。少事李罕之，从罕之奔晋，为匡卫指挥使。
In his youth he followed Li Han to join Jin, and was appointed as commander of the Kuangwei commandery.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 王建及，许州人也。少事李罕之，从罕之奔晋，为匡卫指挥使。 [/INST] In his youth he followed Li Han to join Jin, and was appointed as commander of the Kuangwei commandery.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 王建及，许州人也。少事李罕之，从罕之奔晋，为匡卫指挥使。
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In his youth he followed Li Han to join Jin, and was appointed as commander of the Kuangwei commandery.
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