After credit card installment, the remaining handling fee will be cleared at one time, and no additional interest will be charged. According to Article 7 of the Measures for the Supervision and Administration of Credit Card Business of Commercial Banks, credit cards refer to all kinds of media that record the relevant information of cardholders' accounts, have the functions of bank credit line and overdraft, and provide relevant banking services for cardholders. China's relevant laws ("NPC Standing Committee on