祸福倚伏

Explanation: Bad and good metaphor interdependence. 　　Usage: The main predicate; as object; bad and good metaphor interdependence 　　Source: Qin Li Er, "I": "Misfortune relied upon by Fu, Fu Xi disaster by V." 　　Examples: Heart intimacy, then ~ to infinity, although not the defense have Divine Perception. (Song Chenliang "Q & A on") Thesaurus:  Good and bad fortune be interdependent