I don't read a lot of books with invented languages, but a number that I've seen seem somewhat European. I don't remember very many Sinitic constructed languages. I think that would be nice, but the nature of the language conveys information about the culture and the society that speaks it. a reader would naturally see a Sinitic language and picture a culture that is Sinitic, even if the author did not intend it that…
I've read SF works in which light-based and even scent-based languages are posited. Authors don't always use this as anything other than background color in their universe, though.