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崤函，中国古地名，指崤山与函谷关，两者都在今天河南省，大致在灵宝市、陕县范围。战国时代，崤函以东，称为山东，与西方的秦国相对。
崤函并称，主要因此处地势险要、函谷关“一夫当关，万夫莫开”，是中国古代军事争夺的焦点之一。
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