China Will Build the Tallest Building In the World in Just 90 Days (Updated) <Pre-fab magic They will be able to achieve this impossibly fast construction rate by using a prefabricated modular technology developed by Broad Sustainable Building, a company that has built 20 tall structures in China so far, including the that 30-story hotel.> I don't say it cannot be done. They managed to produce the Olympics---how they managed to do that --I have heard some 'bad' things. Would I want to visit or live/work in such a building? No. By contrast--it has taken a decade already to rebuild the World Trade Center/Twin Towers. I don't think Chinese engineers could be superior to Western engineers. The principles of engineering would seemingly be fixed/constant?