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 way. so the style of the constructed language is restricted to history as it has evolved in our world, and not the fictional world the author builds.
to push even further, how would one imagine an alien language where the organisms do not speak through mouth-like organs? what if they made noises through all their pores in their skin? or non-auditory communication like colour coded messages in their eyes? what if aliens had no mouth or eyes in the first place? or skin? what if aliens spoke in methods that did not require passage of time... i.e. the entire message flash out in a single packet of information? I guess these methods of communication wouldn't allow a story to be told in a way that is familiar to typical human story telling and would thus be uninteresting. but would be nice to imagine regardless.