函ㄏㄢˊhán谷ㄍㄨˇgǔ關ㄍㄨㄢguān

  1. 位於河南省靈寶縣西南的關口。東起崤山，西至潼津，地形至為險要。戰國時為秦所建，故也稱為「秦關」。

英Hangu Pass in modern day Henan Province, strategic pass forming the eastern gate of the Qin State during the Warring States Period (770-221 BC)​