‘Guǐ mén guān’ literally means ‘the Gate of Ghosts’ — a mythical entrance to the underworld in traditional Chinese folklore. It symbolizes the boundary between life and death, and is used metaphorically to describe an extremely perilous situation where survival is uncertain, such as a critical medical crisis, a near-fatal accident, or a severe illness that pushes someone to the brink of death.

The three characters combine to reinforce this imagery: 鬼 (guǐ) means ‘ghost’ or ‘spirit’, 门 (mén) means ‘gate’ or ‘door’, and 关 (guān) means ‘pass’ or ‘checkpoint’ — together evoking a guarded, ominous threshold one must cross to enter the afterlife. While rooted in superstition, the term is widely used today in modern Chinese, especially in medical, journalistic, and literary contexts, to emphasize how narrowly someone escaped death or overcame overwhelming danger.