Steps for using the voucher of Meituan Nanjing Supermarket:
1. Open Meituan, click My in the lower right corner and open the personal center.
2. Click on the red envelope card voucher in the personal center, and you can see all the coupons you have received.
3. Find the supermarket voucher and click to use it.
4. Select the goods in the opened interface, and just use the voucher when settling accounts.