After falling more than 40 percent from June to August on worries of an economic slowdown, China's Shanghai Composite is up over 20 percent from its lows on speculation of government stimulus and hopes the economy may recover.
This China rally has helped lift the U.S. stock market back to near all-time highs.
Not so fast. A plunge in commodity prices and the latest sales numbers from construction machine maker Caterpillar may portend a further slowdown in the world's second-largest economy.
Here is what Goldman Sachs and a leading Wall Street Caterpillar analyst said...