China's biggest worry, imho, is losing most favored nation status with the U.S. We're their largest market and without us a lot of Chinese workers will be out in the street. Lots of unemployed with no money, no shelter and no food are a recipe for political unrest, something I'm sure the Chinese want to avoid at all costs.
Lot of Chinese entering middle class status as is a few entering millionaire/billionare status. They wont like the rug pulled out from under them because of NK.
