A 57-story building has been recently completed in Hunan, using "Lego-style" i.e. stacking up like lego bricks and consuming only 19 days.

Called "Little Heavenly City," the building has a height of over 200 meters and an area of 180,000 square meters, including 3.6 kilometer pedestrian street and 19 10-meter-high halls, which can accommodate 4,000 people in the workplace and 800 homes.