路见不平，拔刀相助 (路見不平，拔刀相助) lù jiàn bù píng, bá dāo xiāngzhù

lù jiàn bù píng, bá dāo xiāngzhù phrase to intervene when one sees an injustice; to rush to the rescue; to play the white knight
Domain: Proverb 谚语
Notes: (CC-CEDICT '路見不平，拔刀相助')