Try the other QR flow once, confirm data is working, then switch to WeChat Pay, cash, or another merchant. Do not turn a small purchase into a long troubleshooting session.
You are at a small shop, stall, or restaurant counter in China. Alipay opens, but the payment code or scan flow fails. People may be waiting behind you.
Do not assume every QR code is a merchant account.
Do not assume setup success covers personal transfers.
Do not assume a small merchant can run a foreign physical card.
Traveler experience
Watch and read real traveler context
These videos and Reddit threads are related to this guide's scenario. Use them
as practical context, not as a guarantee that the same steps will work for every
card, device, passport, hotel, route, or merchant.