| 函 |
Hán gǔ Guān | 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) |
| 函 |
hán | envelope / case / letter |
| 函 |
hán | variant of 函 |
| 谷 |
gǔ | grain / corn |
| 谷 |
Gǔ | surname Gu |
| 谷 |
gǔ | valley |
| 关 |
Guān | surname Guan |
| 关 |
guān | mountain pass / to close; to shut; to turn off / to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc) / to concern; to involve |