狗咬吕洞宾 gǒuyǎolǚdòngbīn to bite the hand that feeds you Origin Definitions Defs Strokes Stroke Words Sentences Sents 狗咬吕洞宾，不识好人心 gǒuyǎolǚdòngbīnbùshíhǎorénxīn to ill reward kindness a dog biting [[吕洞宾|呂洞賓|lu:3 dong4 bin1]]; to mistreat a person who is trying to help you or show you kindness