劳心 láoxīn to work with one's mind Origin Definitions Defs Strokes Stroke Words Sentences Sents 劳心劳力 láoxīnláolì to tax one's mind and body to put in great effort both mentally and physically; to work extremely hard劳心苦思 láoxīnkǔsī to rack one's brains to rack one's brains; to think hard