The thing I keep coming back to with China is that it's (mostly) mono-ethnic and that ethnicity is rapidly aging, such as South Korea and Japan. The birth rate is tragic, and soon they're going to have a lot of infrastructure and old people and no one around to support it.

The other shoe that is waiting to drop is the amount of spending and shadowy debts that to prop up the real estate industry. The vast majority of Chinese have invested their life savings into what looks like a mirage.

Thirdly, they've become the world's factory. But now now they've priced themselves out and it's moving to places like Vietnam and India. So now what's left? Consumer spending? High tech? It looks like they need to reinvent themselves again.