You’re on drugs. The real Chinese economy is more like 1/3 the size of the US. Maybe 5/8.
Their military is a joke and their navy is mostly kitted out fishing boats.
Also, their population is 3x the size of the US. That means it is 15x less efficient.
It is a basket case that is going through a famine right now. They also have paltry supplies or oil, gas, coal, timber and fresh water.