Facts about the Chinese slowdown

Why then is China slowing so sharply? Simple, real estate investment has hit a wall. After growing at 20% y/y for a long time, real estate investment stalled – with a y/y growth rate of around 0% (Figure 5). That means that China is in turn producing more steel and cement than it needs, and producers of steel and cement are cutting back. That in turns hurts iron ore exporters…

This though is very much a result of China’s own policy choices. Rather than allowing the real exchange rate to appreciate back when China was truly booming (05-late 07/ early 08), China’s policy makers opted to rely on administrative curbs on credit growth. That left China more exposed to global slump in demand – as it kept exports up by limiting real appreciation even as it credit curbs limited the amount of froth in the real estate market back when China was booming and real interest rates were negative. China invested a lot in real estate, but it is no Dubai. But China’s policy makers still look to have slammed the brakes on a bit too hard. Rather than slowing gradually, real estate investment fell off a cliff

That's a Brad Setser summary of work from the World Bank.  Here is much more, very interesting throughout, although I doubt if there was a much smoother path than what was chosen.  It is also argued that the low price of oil means China will have no problem keeping up its purchases of U.S. Treasury securities.

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