Different Kind of Real Estate Crash

Here are some images Bill Hopen, my sculptor friend sent me regarding a real estate crash in China.

Yes, It's a 12 story building lying flat on the ground.

LINK TO ORIGINAL

Interesting piece of news about China and/or architecture. But it is also interesting to mentally compare the photo of this building to the three pulverized WTC buildings of 9/11. Why did those buildings, each of which sustained asymmetrical damage different from the others, all pulverize with near perfect symmetry and with such great speed? ABN