I'm not too deep in Taiwan as a subject, but I think the Taiwanese government (or rather the government of the Republic of China) isn't too happy with that qual

I'm not too deep in Taiwan as a subject, but I think the Taiwanese government (or rather the government of the Republic of China) isn't too happy with that qualification and wants to stand in their own right, not as a mere province. In many cases this can be circumvented in an even simpler way: Don't ask, if you don't have to. If you have to ask and can use a free text field do that. If you can't use free text due to dependency on a different provider kick the can down to them and give them responsibility ... and in some cases be flexible (Google Maps shows different borders depending on where a user comes from ... lots of effort of course)