振臂一呼 zhèn bì yī hū

DEFINITIONS

  1. to issue a call for action
  2. to raise one's hand and issue a rousing call (idiom)

CHARACTERS

振 zhèn raise, excite, arouse action
臂 bì arm
一 yī one; a, an; alone
呼 hū breathe sigh, exhale; call, shout