ㄏㄢˊhánㄍㄨˇㄍㄨㄢguān

  1. 位於河南省西南關口崤山西地形險要戰國秦關」。

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)​