鼎新革故

Explanation: Old refers to the affairs of state changes or regime change. Now refers to get rid of the old, established boxing. 　　Usage: Joint type; as the predicate attribute; describe the new channels 　　Source: "Book of Changes hexagram miscellaneous": "reform, to it also; Ding, for new people." 　　Examples: Speed stick rain to go to the heart of evil Reformed; not guilty of Thunder, when the effect ~ of meaning. (Ming Shinai "Tales of" eighty-back) Thesaurus:  In addition to the old update, In addition to the old see the New Year in, Di it updated, Old seek new homes, Self For it, change of dynasties Antonym Group:  An often learn it, Always keep it safe