The one child policy and the nightmare that will cause is not just a social policy.

And yes, China's infrastructure is very very impressive, however it's also true that when everything has been built in the past 30 years, it's inevitably going to be a lot more efficient and modern than a country that has a lot of legacy baggage. A prime example of that is probably the UK, who are still trying to keep Victorian-era rail infrastructure working. Tearing out old stuff and replacing it is time consuming, complex, and expensive.