Dive summary:

• There is no way to know how credible the promise is, but a Chinese firm, Broad Sustainable Building Corporation, says it will be ready to begin later this year to erect a 220-floor, 2,749-foot tower of prefabricated modules that are being manufactured now.
• The whole project, set for the city of Changsha and described in a company video, is supposed to take seventh months – three of them for the actual on-site construction at a rate of five stories per day.
• CEO Zhang Yue says that prefabricating the building's elements cures the "chaotic" aspect of construction and makes unthinkable construction speed possible.

From the article:

“Traditional construction is chaotic,” Yue said in a fascinating "Wired" profile from last year. “We took construction and moved it into the factory.” ...