以夷制夷

Explanation: Yi alien. Between the use of alien and foreign internal contradictions, its conflict with each other, reducing its strength. 　　Usage: Partial official; as attribute; with compliment 　　Source: Southern Song Fan Ye, "Biography of the Later Han Deng," proposed by Ham-phase attack by Qiang Hu, magistrate of the benefit to cutting Yi Yi, should not ban protection. " 　　Examples: I remember last year when many people in China, crying blindly, when the League of Nations, Japan's newspapers tend to be ridiculed, saying that this is an old ancestral ~ means. ★ Lu Xun's "pseudo-free book ~" Thesaurus:  2 Peach 3 persons, Second, killing three persons Peach, stab sb. in the back, murder by means of another's aword, Yiyizhiyi, Yiyifayi