一成不变

Traditional form:

一成不變

Pinyin (reading):

yīchéng-bùbiàn

Definitions:

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

Characters:

• 一 - one; a, an; alone
• 成 - to accomplish; to become; to complete, to finish; to succeed
• 不 - no, not, un-; negative prefix
• 变 - to change, to transform, to alter; rebel

Traditional characters:

• 一 - one; a, an; alone
• 成 - to accomplish; to become; to complete, to finish; to succeed
• 不 - no, not, un-; negative prefix
• 變 - to change, to transform, to alter; rebel