用心 yòngxīn HSK6 diligent Origin Definitions Defs Strokes Stroke Words Sentences Sents yòngxīn diligent 用 yòng verb to use To use; to employ; to apply or make use of something to achieve a purpose.心 xīn noun mind thought; intellect; the organ of thinkingyòngxīn motive 用 yòng verb to use To use; to employ; to apply or make use of something to achieve a purpose.心 xīn noun intention purpose; motive; moral character or disposition