Read Edit View history 苦工夫 kǔgōngfu painstaking effort Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 苦工夫 kǔgōngfu painstaking effort strenuous work or great effort put into a task Edit Delete References Add reference variant 苦功夫/苦功夫 → 苦工夫/苦工夫 Edit Delete