Open the mobile phone WeChat and enter the payment interface. In the interface that appears, click on the QR code to collect money, then click on the customer message and enter the required text, and then click on the submit completion message. The specific operation method is as follows:

1. Open the mobile phone WeChat, click the plus sign in the upper right corner and select the payment button to enter.

2. After entering the collection and payment interface, click the QR code collection button to enter.

3. After the page jumps, click the small collection ledger button to enter.

4. After entering the small account interface, click the collection record to enter.

5. You can see the content of customer payment in the payment record interface that appears. Enter the content to leave a message at the bottom of the page, and click Submit.

6. At this point, after the page jumps, you can see the message submitted to the customer.