I had heard of WeChat and AliPay but didn't know how it worked. It is quite similar to what Walmart does with their Walmart Pay https://www.walmart.com/cp/walmart-pay/3205993 and what a number of retailers tried to do with CurrenctC https://en.wikipedia.org/wiki/Merchant_Customer_Exchange

CurrentctC never made it out of test marketing and I don't think Walmart Pay is taking off.

The difference is that these two are from big retailers and the Chinese versions are from apps or online retailers.