I mean those 1st party integrations directly listed in WeChat services page are probably good examples of services that "feel" nice to interact, because they are used by millions of people everyday and they are need to optimized and polished to be able to serve millions of users.
Here's a screenshot of the list, if you want to Google and check out some of them: https://imgur.com/a/KKEdliE
There's a pretty big difference in what UX "feels nice" to East Asian audiences vs Western audiences. This video provides some insight into why this might be:
https://www.youtube.com/watch?v=WSMFnJnY7EA
We're in a thread talking about a technology that purports to make creating "native mobile apps, as easy as creating a website"; and the parent claimed that the Alipay/WeChats mini-app stacks are similar.
I don't think asking for examples of this resulting in an experience that's pleasant is unreasonable?
Well, do those WeChat services have competition? That's where I've seen the push for better UX: it's a signal to users that your product is overall higher quality. So not so much 'pretty power company technicians' and more 'Is the lobby of the hotel clean?'.
