well, China is outright fucked with this for sure. (those arsenic levels basically cripple the population, combined with the soon to occur clean water crisis)
eh, I'd assume they will simply due to how they treat the workers they use in africa, I just get the feeling they will cross a line at some point starting a conflict.
I doubt China would pull out willingly, their whole face based culture would see that as a major loss of face, so they'd do everything to crush resistance instead, probably including war crimes.
yeah, its basically just a matter of time before whoever they send in to do business there offends the wrong person, and suddenly afghanistan is a quagmire for them. (considering how china is treating the locals in africa)