Another challenge to this list: for long the Chinese high growth rate has been fueled by foreign investments (basically foreign companies outsourcing their production to China). This reduced a lot with the financial crisis (and outsourcing of factories is mostly done, now if anything automation is reversing that movement) and China compensated by a massive increase in debt which fueled a real estate bubble and as you mentioned worrying high level of debt. Now that has to stop at one point, and then what?