I’ve been dealing with this at my job too, I’ve been trying to review technical documents “written” by another developer who is 100% using AI to generate the technical docs. I find the docs totally unreadable. I don’t have much in the way of review comments except “can you re-write this part in a more human-readable way”? * 1000. Then the re-writes happen but again it’s clear the prompt was just “AI, re-write this in a more human-readable way” and it’s still just as unreadable just in a different format.
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But then again, I’m always unsure, are we at the point where we aren’t expected to be able to read these docs, and are they just meant to be ingested by a different AI agent to then use them to do something else ?

American here, lived in mainland China for ~17 years. It’s nice, as long as you have a good job with a company that sponsors your work visa. Starting your own company and sponsoring your own work visa is also possible but much more involved.
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Biggest problem I saw/had with living there long-term was that you won’t ever have a green card/PR unless you are rich, make a really big salary, or have some special Phd/awards/patents. And once you hit retirement age, you aren’t eligible for a work visa. Even marrying a local Chinese can be difficult to get your PR, depending on circumstances.
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I had heard rumors of a “retirement visa” being discussed by the govt but nothing concrete as far as I know.