陵谷沧桑

Explanation: Ling: hills; Valley: the valley. Hills become valleys and valleys become hills. Metaphor changes things giant 　　Usage: The main predicate; as object; metaphor change things giant 　　Source: Qing Zhao Yi "Oubei Poetry Wu Meicun Psalm": "another former self-care in survivors, a sense of the vicissitudes through Neunggok to cover its a two surnames ashamed, the person is no longer enough concept." Thesaurus:  the swift changes of the world, Reply to earthshaking, Jiedixiantian