一成不变一成不變

yī chéng bù biàn

HSK level: HSK 7–9

Meaning

(idiom) immutable; impervious to change; set in stone

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Characters

一yīone; a, an; alone 成chéngto accomplish; to become; to complete, to finish; to succeed丁戈不bùno, not, un-; negative prefix一变biànto change, to transform, to alter; rebel亦又