PRC has affirmative action points on gaokao for "underperforming" minorities, well it's been phased out to economically disadvantaged minorities last few years to mitigate privilege stacking. So system not incompatible with affirmative action, but even then tier2 PRC schools the affirmative action floor is still like 95th percentile tier1 closer to 99.9 percentile, i.e. not something that can be gamed like in US by 75th percentile SAT scores, athletics, donors, personality scores, diversity.