The NumbersToNative extension has a single action (also a function), NumberToNative (without the plural s 😁). It has two input parameters:
The action returns a single parameter, NativeNumber (Text), which is the representation of the specified number in the specified locale.
Note that conversion to Chinese is experimental, I didn't extensively check it against examples of actual Chinese numbers.
Also note there's no formatting available for the number (like in English 12345678 as 12,345,678), mainly because I have no knowledge about number formatting in other scripts than latin. If so desired, I can add it later, just let me know.