Domestic catering chain enterprises use collective collection. Aggregation payment code integrates various payment channels such as WeChat and Alipay into a two-dimensional code containing payment links. When the user scans the code, the QR code will automatically identify the application type of the QR code. If it is Alipay, it will automatically jump to Alipay's payment page interface. If it is WeChat, it will jump to the interface of WeChat and complete the payment process. In short, the collection code is a collection of various payment methods.