Still they need to find mariner to man them, they are cutting ships in the fleet for the rest to sail.
Presently the US Navy is a snake eating his tail. Smaller ship need less crew, Constellation class would have helped in number in that case.
We can see a difference of more than 50 crew members between 052d and 055, about 15% minimum.
Dont know if China run in the same problems. We can look also where these ships are build, keeping busy multiple shipyards bring larger production and competances.