前呼后应
qián​hū​hòu​yìng

to take concerted action

  1. 前 qián locativenoun
    front
    (bound form) front; forward; ahead; facing direction. Use 前边 qián​bian or 前面 qián​miàn for the standalone noun.
  2. 呼 hū verb
    to shout
    To cry out; to shout or yell loudly
  3. 后 後 hòu locativenoun
    behind
    (bound form) back; rear; behind; in the direction of one's back
  4. 应 應 yìng nounverb
    to answer
    to answer; to respond; to reply to a call or a question