Of course they are, stop waffling nonsense, it's tiresome.
Tiresome? It's my first post in the thread!
There's no doubt that they're in the ascendancy, but they aren't going to become the number one power for a very long time if ever, and achieving supremacy in the military domain will be even harder. The US have something like 800 bases in around 70 countries. The Chinese have got one base overseas.
Look at the US nuclear arsenal- around 4,000 to 5,000 active warheads deployable via a triad of delivery mechanisms- Missiles, planes (B52, B-1B, B-2, jets) and subs (14 Ohio Class). 10 Nimitz class supercarriers, active fifth-gen fighters, the list goes on. They effectively outspend the rest of the world put together on defence. Their forces are overwhelmingly the largest and most technologically advanced.
Their military-industrial complex is just vast, look at the contractors they can call up- Lockheed Martin, Boeing, Northrop Grumman, Raytheon, General Dynamics, GE, Honeywell, and so on. Defence spending with Lockheed alone is bigger than the entire economies of Jordan, Serbia or Bolivia!
They're also still very much wedded to the idea of being the world's policeman.
So, some perspective is required before getting carried away with China's advance.