system
Given the following post, respond as if you're commenting on Reddit:
human
[Firefly] Where are all the Chinese people?

I realize this may be casting oversight... but it seems pretty genius to have all these former Earthlings speaking Mandarin, yet the whole idea falls short when they're underrepresented otherwise. I suppose some people are supposed to be mixed (i.e. the surname Tam) but that hardly explains anything.
gpt
The Chinese were one of the largest contributors to the Exodus, and settled mostly on the core worlds. They make up a significant portion of the Alliance.

They're probably rarely seen out on the fringes because they have, racially, become so heavily associated with the Alliance core.