高不成，低不就
gāo​bù​chéng​dī​bù​jiù

hard to please

  1. 高 gāo adjective
    high
    high; tall; above average in height, level, or degree
  2. 不成 bù​chéng
    to fail
    (bound form) to fail to happen; to not become something; to have no success or achievement
  3. ， dī
    non-Chinese
  4. 低 dī adjective
    low
    close to the ground or bottom; of short height
  5. 不 bù adverb
    not
    Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
  6. 就 jiù particle
    to accomplish
    (bound form) To complete; to achieve; to finish.