Equipment: Xiaomi 10S
System: MIUI 12. 1.4.0
Software: Meituan11.11.403.
1. First enter the homepage of Meituan, and click the plus sign at the top right.
2. Find the invoice option to enter in the small box.
3. Then click the page to add the head-up option.
4. According to the page prompts, edit and save correctly.
5. After the information is saved, you can show the QR code to the merchant when invoicing.