A Chinese construction company is claiming to be the world’s fastest builder after erecting a 57-storey skyscraper in 19 working days in central China.

Broad Sustainable Building, a prefab construction firm, put up the rectangular, glass and steel Mini Sky City in the Hunan provincial capital of Changsha, assembling three floors a day using a modular method [...].

The company now has ambitions to assemble the world’s tallest skyscraper, at 220 floors, in only three months. — The Guardian

What can you accomplish in 360 hours?
The Chinese sustainable building company, Broad Group, has yet attempted another impossible feat, building a 30-story tall hotel prototype in 360 hours, after building a 15-story building in a week earlier in 2011. — youtube.com