Here are a couple of pieces of information from the InvestmentU newsletter. I can't vouch for the accuracy of the numbers but I believe the trends implied in the numbers.
- 80% of the world's cranes are now in China for all the skyscrapers being built
- Shangai has more than 4000 skyscrapers, twice the number in Manhattan, with another 2000 on the way
- There are more than 170 cities with more than 1 million people
- They are building, throughout the country, the equivalent to a city the size of Houston every month