That's why China will need to act on Taiwan and South China Sea before too late. The longer time China waits, the more the US will fortify Taiwan and South China Sea, then it will become too costly for China to engage in military conflicts and the window of opportunity will close. It's also quite possible as many US puppets as possible will send their warships to South China Sea, then China will have to deal with too many countries. And stop wishful thinking that China's economic/technological success or Taiwan's economic downhill will make Taiwan surrender to China.
I disagree.
Time favours China.
1. It is China which continues to fortify the South China Seas. The USA has no bases, whilst China keeps building.
2. You also have to consider how China is converting its economic power into hard power.
For example, China is building over 350 nuclear missile silos. Once these are completed and filled, this will scare any other country from going to war against China.
Also, the Australian government projects China will have an economy 2x the size of the USA by 2030. All things being equal, China should have 2x as much stuff as the USA.
3. Taiwan is being left to its own resources. Their military and economy are mature and slow-growing.