强人所难
qiǎng​rén​suǒ​nán

to force someone to do the impossible

  1. 强 強 qiǎng verb
    to force
    to force; to compel; to coerce
  2. 人 rén nounpronoun
    other people
    other people; others; another person
  3. 所 suǒ particle
    [relative]
    Used before a verb to form a noun-like phrase representing the object of the action, meaning "that which" or "what".
  4. 难 難 nán adjectiveverb
    to challenge
    to make things difficult for someone; to pose a challenge or difficulty