prefab

In Japan, they have buildings called purihabu(prefabricated).

Well, I've been seeing a lot of trucks like this one in our area.

Attached to it is a prefab room.

The truck drives up to the construction site, a crane lifts the room off the truck.

And like "Lego" they building apartment buildings by stacking these "blocks" onto each other then securing them.

I've seen some “blocks” with closets, others with bathtubs....

Cool, yeah?!