鼎鱼幕燕

Explanation: Like a tripod in the swimming fish, birds nesting on the curtain. Analogy is a very dangerous situation for people or things. 　　Usage: Joint type; as predicate, object; extremely dangerous metaphor 　　Source: Southern Liang Xiao "FU Qiu later <and Mr and Mrs book>": "and general fish swim in the boiling tripod among the top screen Yanchao Yu Fei, almost did not have doubts." 　　Examples: ~, Died in the overnight. ("History of Yuan Dynasty barbarian Biography")