Nothing much that I can think of... I'm currently in Texas (deep red state) and as a US citizen China won't even take me back. Before the whole COVID thing I used to think well can always go to Canada, New Zealand, etc if things get bad enough, but that's not an option anymore with all the China hatred in the 5eyes nations...
There are two threats that I can see, different types of threats for the Chinese American living in USA. The first is institutionalized threat of government decree. If US goes to war with China, Trump has the power to declare an EO and round up all the Chinese Americans... not much anyone can do about it. My guess is they would start by first freezing the bank accounts of all Chinese Americans or Chinese living in America... so unless you have some cash on hand you are literally SOL. Next is by then TikTok and WeChat will be banned, so its much harder to communicate with Chinese folks back in China or even other Chinese folks in the USA without being spied on and worse, when WeChat is not an option anymore you are forced to use the likes of fb, gmail, etc and believe me if the US gov ordered these companies to freeze or lock the accounts of all Chinese Americans on account of hot war, they won't bat an eye...
So without money, without means of communication, it would be hard to do anything. You can't fly anywhere, borders are closed and then the government can simply reclaim your car title, house , passport, license, etc its all digital and electronic these days, they can do this literally overnight and all Chinese American's wake up to the horrible news the next morning... people will be waking up and realizing they cannot log into their company VPN anymore because their Active Directory account got canned because the US government told their employer that you were labeled as enemy combatant. Without a job, with your bank account frozen, 401k forfeitured, well you get the point.
The other threat is the local threat by people in the population... your every day Americans (esp white guys) out of a job, maybe their grandma died of COVID, they see their great leader Trumps MAGA 2020 relection hopes going up in smokes, and its all because of the Invisible China Virus... some of these people will lose it and go postal and kill a bunch of Asain Americans... its almost bound to happen. This threat one can only mitigate by going out of the house as little as possible, being in public places as little as possible... Buying a rifle and handgun for self protection...
Rent is due for many Americans, the rent freeze is ended, in next coming weeks a good portion of Americas will be evicted and on the streets.. people wont' be able to afford food, the unemployment benefits are ending... its gonna get wild... this is not even taking into account many experts see there is a real chance the US dollar could suddenly collapse this year, if that happens all bets are off... If US attacks China in the SCS all bets are off...
I hope I'm wrong about all of this, but if in the beginning of the year people were told it was gonna get this bad by July, most people would have dismissed it as conspiracy theory or doomer thinking....