We knew this was going to happen.  China builds big Navy and Air Force.  Flexes muscles and starts pushing Taiwan over it's One China policy.  China continually pushes the envelope until either 1 of 2 things happens.

An armed conflict or the total reunification of China.  China insists and has always insisted that Taiwan is part of China.  China isn't just building up that Navy to match off against the US.  They are far away from that.  

But they certainly can raise tensions and intimidate their neighbours.

Taiwan has already said over and over again that the sovereign country will remain one.  If Taiwan fights, the US fights.