Reading through my daily blogroll I came across "these stats on China.":http://randomroger.blogspot.com/2006/04/china-factoids.html I won't vouch for their accuracy, but here they are anyway...
* 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 Chinese cities with more than 1 million people
* They are building, throughout the country, the equivalent to a city the size of Houston every month.