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Open the tool →优昙一现 (yōu tán yī xiàn) is a Chinese idiom (chengyu) meaning “a fleeting phenomenon”.
优昙一现 is pronounced yōu tán yī xiàn in Mandarin Chinese.
Literally, 优昙一现 means “Uḍumbara flower appears once”. It is used to mean “a fleeting phenomenon”.
优昙钵花如莲花十二瓣,一开即敛。比喻事物或景象稍现即逝,难得见到。