Although I haven't tried to find a Chinese mode myself.
That it's targeted at Chinese abroad is just what I saw from Googling it and reading the SCMP (Singapore) article on it.
The company that made it is also from Singapore (even if it's under Bytedance's umbrella).
They seem to be separate from TikTok. The only thing they have in the app store for example, is some chatbot application.
¹: which is dozens of them at this point, open and not.
²: with lots of speakers and training data.
Separately, the fact that they can translate between languages where they have never seen any translation data in their inputs shows that they have internal models of the world and language, that go beyond what one might expect from a statistical parrot.
They do have world understanding - perhaps limited some by the fact that their input data may not cover a lot of everyday things.