面目全非

miànmùquánfēi
nothing remains the same (idiom); change beyond recognition

CEDICT

Entry Composition

1 面目 miànmù
  1. appearance
  2. facial features
  3. look
2 全 quán
  1. all
  2. whole
  3. entire
  4. every
  5. complete
3 非 fēi
  1. to not be; not
  2. wrong; incorrect
  3. non-; un-; in-; de-
  4. to reproach; to blame
  5. (coll.) to insist on; simply must