破旧立新

Explanation: Get rid of the old, create a new. 　　Usage: -Linked; as the predicate attribute; with compliment 　　Examples: We want to change the feudal sense ~. Thesaurus:  get rid of the old to make way for the new, rehash, promote what is beneficial and abolish what is harmful, make a fresh start together with the whole nation, And China have a good time together