路见不平，拔刀相助
lù​jiàn​bù​píng​bá​dāo​xiāng​zhù

to rush to the rescue

  1. 路 lù noun
    road
    road; path; way; route
  2. 见 見 jiàn verb
    to see
    to see; to catch sight of; to perceive visually
  3. 不平 bù​píng
    injustice
    an injustice or a grievance; something unfair or unreasonable
  4. ， bá
    non-Chinese
  5. 拔刀相助 bá​dāo​xiāng​zhù
    to help against injustice
    to draw a sword and help when seeing an injustice; to help the weak against a bully or play the white knight