solarz
Brigadier
Even if the PLA wins a local war, the US can escalate horizontally by shutting off Chinese shipping at distant chokepoints, launch attacks from the sea that China can't respond to, etc. This will severely degrade its economy and destroy its war production. Then there's one of two choices: 1) Surrender and accept terms that make the Unequal Treaties look like paragons of fairness. 2) My preferred option: Launch a nuclear war that ends the US, China, and probably the rest of the planet.
Too many people, especially when considering China's strategic deterrent, have a poverty mentality where they seek "asymmetric" means to counter the US, as if China can be a superpower on the cheap.
Historically, China has always been a land power. I see no reason for China to imitate the United States by trying to become a second global hegemon. The purpose of the BRI is to develop the land-based trade routes into China. Resource-wise, China is both self-sufficient and has secured the support of Russia. Therefore I don't see any US naval blockade to be crippling to Chinese war efforts.
In contrast, the developed world has basically outsourced the production of all consumer goods to China. These production capabilities take years if not decades to build up. By blockading trade with China, Western nations would just be condemning its people to hyperinflation, with all the ensuing social upheavals that come with it. A trade blockade would be far more crippling to them than to China.