not necessarily, HII was awarded a double carrier contract in Jan 2019 to build CVN-80 and CVN-81, the block contract was worth $15.2 billion
block orders reduce cost and increase supply chain throughout the industries
there is no reason why China can't do the same and do a block contract for construction of two carriers simultaneously
The US has been doing this type of thing for a long time.
That way they get the:
USS John F. Kennedy, CVN-79, which will launch in the next year
USS Enterpriae, CVN-80 which will launch in late 2024.
the "Unnamed" USS CVN-81, which will launch around 2029.
They could launch every four years easily enough, but with the complexities of all f the new cutting edge things they are doing with the Ford class, they are willing to add an extra year to each in order to have the time to get it right.
...and they will. These carriers are goiong to be able to launch more aircraft faster and with well over 1000 fewer personnel on each.
Over the life of each, they expect to save 4-6 billion dollars in operating costs, or about 1/2 pf the cost of the carrier itself.
...and I hav no doubt that they will do so.
There is no doubt China can do the same thing.