When you use the online payment service of China UnionPay Express for the first time in Cai Huasheng Live APP, you can use the product functions of China UnionPay Express Online Payment Platform through Cai Huasheng Live APP (users don't need to register the account of China UnionPay Express APP), just select at least one synchronization card (the payment code below the scan code box on the "Sweep" page in the APP) on the authorized component, check the agreement and click OK to upgrade. If you have bound your card with your real name in China UnionPay Express APP, the system will synchronize the card paid through China UnionPay Express APP to the online payment platform in China UnionPay Express APP by default, and the newly bound bank card in China UnionPay Express App will also be synchronized in real time.