China is still a developing nation. That means that China can invest in infrastructure (roads, trains, airports, education) which have high real return making the increase in debt much less of a problem. This is also the reason why China has grown persistently 7-10% over the past two decades compared to USA which have grown 2-3% in the same period. Per person China's GDP is less than a fifth of the US hinting that th…
http://www.businessinsider.fr/us/china-ghost-cities-satellit...