Generally, it is not necessary. According to Article 24 of the Law on the Protection of Consumers' Rights and Interests, if the goods or services provided by operators do not meet the quality requirements, consumers may return them in accordance with the provisions of the state and the agreement of the parties concerned, or require operators to fulfill the obligation of replacement and repair. If there is no state regulation and agreement between the parties, consumers can return the goods within seven days from the date of receipt. If the goods meet the statutory conditions for termination of the contract within seven days, consumers can return them in time. If the commodity does not meet the statutory conditions for terminating the contract, the operator may be required to fulfill the obligation of replacement and repair. (This kind of gold shop generally doesn't smash its own signboard because of a manual fee. )