任劳任怨
rèn​láo​rèn​yuàn

to work hard and endure criticism

  1. 任 rèn verbnoun
    to bear
    To undertake, assume, or be in charge of a task or responsibility
  2. 劳 勞 láo nounadjective
    to work
    (bound form) to work hard; to toil or labor; also refers to laborers or the working class
  3. 任 rèn verbnoun
    to bear
    To undertake, assume, or be in charge of a task or responsibility
  4. 怨 yuàn nounverb
    resentment
    (bound form) Resentment, hatred, or a grudge; often used in words like 抱怨 bào​yuàn and 怨恨 yuàn​hèn