Anyone could build a carrier 'lookylikey' in 3 years so long as they had enough resource. It's just that it will be a pile of dog poo when compared to the proper article and more akin to use in a theme park as a kids plaything than used as a war fighting platform with integrated aviation capability. (Haven't they already got a Nimitz size mock-up in a naval theme park?)
Hat's off to their ambition, but I expect it's basic propaganda to feed the general feeling in the west that China is going to be a Superpower.
As if......