依然故我

yīrángùwǒ
  1. to be one's old self (idiom)
  2. to be unchanged
  3. (derog.) to be stuck in one's ways

CEDICT

derogatory

Entry Composition

1 依然 yīrán still; as before
2 故我 gùwǒ
  1. one's old self
  2. one's original self
  3. what one has always been