Keep in mind... the US and, more generally, the West need China a LOT less than China needs them. The West, and especially the US, have every resource (save a few rare earth metals) that it needs to have a functional and thriving economies, especially if western nations trade fairly amongst themselves.
Additionally, Chinese demographics are a ticking time bomb. The West, while not a breeding society per se, has much better demographics via southern immigration.
To add insult to injury, China has basically destroyed their environment to have the manufacturing economy they have today. What are the health and wealth implications of that over time? Not good!
Lastly, China has been all about making people rich on the backs on cheap labor. That labor isn’t cheap anymore, and it’s only going to get worse as demographic realities set in. Perhaps China can pivot to a service economy, but I wouldn’t bet on it.
The best is past for the Mainland. All that is left is to figure out how to utilize their vast riches accumulated over the last few decades. By the looks of things, it’s going to be totalitarian oppression and military expansionism. That won’t end well for them. History shows us that.