If the Americans actually cared about their soldiers, veteran benefits wouldn't be the meme that it is. All the stats regarding chronic injuries and illnesses, homelessness, suicide for current and former service members suggest that the MIC sees them as nothing but fodder.As I see it, it's very overblown for Chinese in America to worry about being put in concentration camps during war anyways.
If they do that, they leave themselves with no way to deescalate and immediately set the stage that the war will be a war of total annihilation with no mercy possible.
The nature of the conflict means that there will invariably be a lot of American and America friendly civilian and PoWs in China's hands. A fair bit of Chinese have some relatives in US, and a fair bit among those are in the PLA or will end up in PLA from mobilisation. What do you think happens when PLA officers and grunts alike who had their children/uncles/parents/friends Holocausted by US whenever they stumble on some pro-American civvies or captured US forces?
So rather what I guess will happen (and the same applies to NATO civilians in China) is that they will just all have their visas cancelled and hurried back to their home country.
It's to the point where I'd guess the US government would deploy security units to mitigate overly nationalist Americans from doing pogroms until all the Chinese have left, because giving PLA frontline more license to believe it's a racial war of annihilation absolutely does not benefit US/US vassal frontline.
Not like it's 1930 anymore and it would take a long time to discover a genocide just by word of mouth from escapees.
If they don't give a shit about their own soldiers, you think they will care about Chinese Americans or Chinese nationals?