I've been attempting to work with Alipay for my job for a while now. While they are the Paypal equivalent in China, it's very difficult to work with them.

First, they require a ton of documentation to become a registered business with them. Their API is non-existent, and getting answers is difficult because you either need to speak Chinese or use Google Translate. A lot.

While I'm sure it's great, it can be very frustrating.