有仇不报非君子，有冤不伸枉为人
yǒu chóu bù bào fēi jūn zǐ , yǒu yuān bù shēn wǎng wéi rén

Translation

  • one who doesn't avenge an injustice is not a gentleman, one who doesn't redress a wrong is not a man (idiom)
Chinese Tones