The Chinese are trying to slow things down, rightly so. They've had inflation. They've had a real estate bubble, you should always try to pop bubbles and you should always try to kill inflation, so I admire what they're doing.
China will have many problems but it's not the end of the world.
The US went through a similar economic rise with rapid growth in the 20th century with the Great Depression in the 1930s.
Jim Rogers started trading the stock market with $600 in 1968.In 1973 he formed the Quantum Fund with the legendary investor George Soros before retiring, a multi millionaire at the age of 37. Rogers and Soros helped steer the fund to a miraculous 4,200% return over the 10 year span of the fund while the S&P 500 returned just 47%.