Scenario 1: most likely they are gonna be economically crippled and they will go full NORTH KOREA on their people. We've seen this many times before in China's history of opening up and closing to the world. Also insane oppression will preserve the aristocratic CCP

Scenario 2: Nuclear War, however we can annihilate them world's over , we have many more nukes and our missiles have been known to be reliable. I don't have as much faith in Chinese missiles. Also there will be nothing left for the CCP. So I rule out this scenario for that reason. That being said missile defense over the next two decades could in theory change that. We will see.

Scenario 3: New biological attack. Because the precedent has been set. I find this to be the second most likely scenario after scenario 1. The problem is it would let the cat out of the bag since most the world suspects china being responsible for covid19 anyway. They could in theory go through a proxy nation but I digress. Its risky for them. Plus we could just go nuclear on them as a response.

Scenario 4: Revolution. I think this is about as likely as Nuclear War but we will see.