Xian Min Zhang sent us the latest time-lapse video of the construction of his latest building: A 57-floor 2-million-square-foot (180,000-square-meter) skyscraper fully built with energy-efficient, factory-produced Lego-like blocks. He claims that they are now building these at a record three floors per day! The company keeps increasing their building speed and size of these buildings at an impressive rate. It is still not the 220-story skyscraper they claimed they were going to build, but it is amazing nonetheless. via Gizmodo.