Also, as we see from Russia's invasion of Ukraine, drones and missiles are effective at taking out the world's second largest navy. Taiwan has very accurate and effective homegrown missiles [3]. China would need to amass a ton of ships which would be easily detected, staff them with only sons from families, and try to move them across a 100 mile straits while under the barrage of US/Japan/Taiwan missiles and drones.
Lastly, China is quickly transitioning to state run economy much like Soviet Union [3], which means innovations and growth will be gone forever, especially in tech industries.
[1] https://www.reddit.com/media?url=https%3A%2F%2Fpreview.redd....
[2] https://www.businesstimes.com.sg/international/global/frugal... https://www.scmp.com/economy/economic-indicators/article/325...
[3] https://www.eurasiantimes.com/taiwan-smashes-chinese-warship...
[4] https://asia.nikkei.com/Business/Markets/China-s-favored-sta...