黄雀伺蝉

Explanation: Mantis was about to catch cicadas, I do not know oriole behind it is to eat it. Impending calamity metaphor do not know. 　　Usage: The main predicate; for clauses, attributive; containing derogatory 　　Source: Han Liu Xiang, "said park being admonished": "Mantis committed tarsal Give cicada song, but I do not know oriole, in its waterfront as well. Oriole extension of the neck like pecking mantis, but not a bullet in his next also." Thesaurus:  yellowbird behind, fear of disturbance in the rear