I wonder what kind of competitive advantage China will have by being able to build infrastructure more effectively than the US. For example, China already has

I wonder what kind of competitive advantage China will have by being able to build infrastructure more effectively than the US. For example, China already has 18,000 miles of high-speed rail. They’ll have another 7,000 miles in 6 years. I imagine there are many other examples where they are more effective. Subways, airports, roads, etc?