If you have no existing reach or point of contact in that market, I'd say it's rather difficult to the point of being questionable whether it's worth the trouble. It's not closed to foreigners, so you can certainly build an audience there, but the language, cultural and platform hurdles, along with actually connecting with your target demographic, make it a lot more complex than simply growing on a platform you're already familiar with. If you have a good reason to target that market, though, then by all means.