30-floor hotel built in 15 days! Where...?

China does it again, they built this 30-floor hotel in Changsha in just 15 days.
How could they?
The truth is this; walls and floor panels, they call it "Flatpack system", were bulit in a factory prior the rising of the building.
The electrics, plumbing, air conditioning and flooring will be installed within the panels before they are being transported to the construction site and put together.
This technique reduces the cost to build by impressing two-thirds!
And because less cement is used the greenhouse emissions are reduced.
A 15 cm thermal insulation will also boost the buildings green status.

And now!
Read this:
This flatpack system with it´s factory-built technique will soon be used in the same city of Changsha, when the worlds tallest building will be constructed.
A 220-storey Sky City project is on it´s way.
In will be completed in just 90 days!!
BSB stands for Broad Sustainable Building, never ever under-estimate the will among the Chinese builders to be as environmentaly friendly as possible.
The cost will be cut in just about half compared to the previous world´s tallest building, the Burj Kahlifa in Dubai which took 5 years to build, compared to 90 days in Changsha.
The cost to build Sky City is likely to be US$ 620m.

The Sky City will stand 838 metres tall and will feature a hospital, schools, offices and leisure facilities for its 17 000 residents.

China does it.