Here's an excerpt:
When net exports collapsed in 2008-2009 from 11% of GDP to 5%, China’s leader reacted by further increasing the fixed-investment share of GDP from 42% to 47%.
Thus, China did not suffer a severe recession – as occurred in Japan, Germany, and elsewhere in emerging Asia in 2009 – only because fixed investment exploded. And the fixed-investment share of GDP has increased further in 2010-2011, to almost 50%.
The problem, of course, is that no country can be productive enough to reinvest 50% of GDP in new capital stock without eventually facing immense overcapacity and a staggering non-performing loan problem.