tiě​shù​kāi​huā

extremely rare event

铁树开花 鐵樹開花 tiě​shù​kāi​huā
extremely rare event
something highly improbable or extremely rare; an event that is almost impossible to see happen. Literally means "the iron tree (cycad) blooms", referring to how these plants bloom very infrequently outside of their native tropical environment.

Frequency

Movie subtitles
0.060 per million appears in 0% of films
Written text
0.083 per million

Cross-References

See

Sources