hate the wicked and point out only the evil which one has done
Chinese idiom, Pinyin is w ù w ù C ó ngdu ǎ n, which means that people do bad things, not very harsh. It comes from the biography of Gongyang, the 20th year of Zhaogong.
The idiom comes from the biography of Gongyang in the 20th year of Zhaogong: "the good and good of a gentleman are long, the evil and the evil are short, the evil and the evil stop his body, and the good and the good reach his descendants."
hate the wicked and point out only the evil which one has done
Hold one's grudge and shed one's shame - bào yuàn xuě chǐ