功 ㄍㄨㄥ gōng 亏 ㄎㄨㄟ kuī 一 ㄧ yī 篑 ㄎㄨㄟ ˋ kuì 功 ㄍㄨㄥ gōng 虧 ㄎㄨㄟ kuī 一 ㄧ yī 簣 ㄎㄨㄟ ˋ kuì lit. to ruin the enterprise for the sake of one basketful to fail through lack of a final effort to spoil the ship for a ha'penny worth of tar (idiom)