如水投石
      Explanation: As the water splashed rocks, did not join. Turn a deaf ear or metaphor made no effect.
      Source: When Yang Song, "Kameyama Quotations" when Xie was said also. Xie honest, but not as Mr. Wu Cong. Therefore, every word Yangjun Cong Ming Ming, Xie Jun water testing the waters, and then call it good also not a bad idea. "