滴水穿石 [ㄉㄧ ㄕㄨㄟˇ ㄔㄨㄢ ㄕˊ; di1 shui3 chuan1 shi2] dripping water penetrates the stone (idiom); constant perseverance yields success You can achieve your aim if you try hard without giving up. Persistent effort overcomes any difficulty. ◄ ►