no it doesn't.

that would be equivalent to shooting themselves in the ocean.

for now, they are still under the thumb of the american navy. how else would they ship out all the consumer goods? and to whom? USA is their biggest buyer.

OK: PRC blockades Taiwan leads to american navy blockading PRC

Nobody wants that.

If the US only put a partial blockade for Chinese bound ships in the Strait of Malacca, that would be enough. China is starved for oil too. They're trying to mitigate the Strait issue with the oil pipelines through Xinjiang and into the Caspian, but those are years away still.