My contactless card works nowhere outside my small home country. Meanwhile Chinese tourists are there seamlessly buying food from 7/11 with alipay whole I go through the full pin and card thing.

As the other reply says too, any shop can set this up easily. I challenge you to take contactless payments in your home country, it's nothing like simply getting a qr payment and involves merchant banking.

I've seen tiny remote rural village stores that would never even imagine having a visa PoS terminal with big wechat payment signs out front.