一成不变 yī chéng bù biàn

DEFINITIONS

  1. nothing much changes (idiom); always the same
  2. stuck in a rut

CHARACTERS

一 yī
HSK 1
one; a, an; alone
成 chéng
HSK 3
completed, finished, fixed
不 bù
HSK 1
no, not; un-; negative prefix
变 biàn
HSK 3
change, transform, alter; rebel