鹬蚌相持，渔人得利

Explanation: Metaphor of the two sides at loggerheads, leaving from a third party benefit. 　　Source: "Warring Yan policy II," recorded in the clam shell open sun, sandpipers to peck at it, the mouth is clamped clam shells, the two areas are not to give way. Fisherman came, the two are caught. 　　Examples: This really is called the '~'. Following the intention of good honest if Ni, brother harmony, would be willing to equality of furniture, which thousands of taels of gold, all the five hundred and twenty brothers, how to get Teng Tai Yin of the hand? ★ "Ancient and Modern Fiction Ghost broken furniture Teng Tai Yin"