You will be spending inordinate amounts of time in the Documentation Archive reading still applicable (and well written) docs, on S/O reading the ~3 threads that relate to your issue, blog posts from ~2010 and a whole lot of time searching specific APIs w/ GH code search to see how a repo from 2014 used it. And you’ll be alone in time and space if you’re not at a co while doing it.
Web developers are far more common, far cheaper, and far better supported by the ecosystem, you can literally just plug and play them entirely unlike eg iOS developers -> AppKit.
If this is a personal thing, have fun it’s very rewarding. If this is business/career, either learn Mandarin or turn around now, there is no hope or future here.