They are running in startup mode. Things can be done very quickly as long as red tape doesn't hinder the speed of development. With having experience building

They are running in startup mode. Things can be done very quickly as long as red tape doesn't hinder the speed of development. With having experience building everything for everyone, it's not surprising that they can build very quickly. They have ridiculous manpower at their factories working 24/7 to make billions of phones, utilizing that type of experience to fabricate couple hundreds of thousands of chips to build a super computer can probably take a couple of months. Assembly is probably another couple months and getting the software in order is probably another couple of months. Now if it was a US gov't contract, it would probably take a decade...