可乘之隙

Explanation: Gap loopholes and opportunities. Other weaknesses that can be used, the gap. 　　Usage: Partial official; as object; containing derogatory 　　Source: Song Chao make the "chicken _set_" when is the time, there are multiplicative of the gap, while China is not desirable. " 　　Examples: Xiao Pei of the original non-locality of the land. This Xuzhou both ~, do not take this loss, too late. ★ Ming Luo, "Three Kingdoms" back to the fourteenth Thesaurus:  handle, Watchful waiting Erdong, haft, fact that may be taken advantage of