一成不变
yìchéng-búbiànTraditional 一成不變
unchanging; set in stone
Every meaning
yīchéng-bùbiàn
- unchanging; set in stone
Its characters
Words with 一
Words with 成
Meanings are from Mandarin The Wild’s own dictionary. Levels follow the official HSK word list (the exam’s 2025 syllabus, levels 7–9 shown together).