China has vertically integrated the entire construction process, making the machines that, extracting the materials, transporting them, and building the infrastructure all using slave wage labor. Americans would never accept that quality of life.
It's about a bias towards building things and taking action.
Construction in the US bordering on a "Vetocracy". Everyone and their NIMBY uncle can oppose anything being done. So what little gets done happens after many years and at great cost.
~18 workers died and hundreds were injured building the HK bridge to Macau and the Mainland which opened in 2018.