The front of kuznetsov's hanger abuts the SS-N-19 grant launch tubes. Why would Liaoning and 001A's hanger be exactly the same size if neither of the Chinese ships needed space for those tubes?
They did not take those tubes and structur out on the Liaoning...so it is easy to understand why it would be the same sixe.
I believe on 0-01A they probably did redesign that area since they are not using thise missile tubes so am hoping that they made the hanger larger.
Also, the decision to appearently copy the Kuznetsov design so closely is odd if the next, totally indigenous Chinese carrier is supposedly already under construction. Clearly the Chinese didn't need the practice of faithfully replicating the kuznetsovs since the replica is not even finished let alone having time to convey any hidden lessons learned, and the Chinese already feel secure and confident enough to proceed With a follow on design.
Having two of that "class" or design helps the PLAN as a stop gap to a new, more risky indigenous design. They are helped logistically because they use the same types of parts, fuel, replacements, etc. They are helped with personnel because they are trained the same.
I believe that is why the second Chinese carrier, and their first indigenous one is basically an improved Chinese version of the Liaoning.
They they will move on to a CATOBAR design which will be brand new to them...and probably one of at least 80,000 tons. I expect they will build two of those as well.
Finally, after that, they will have had the experience and time to prepare for and build what will amount to thier "super carriers," which will be CATOBAR design that they will build on, and standardize on probably until the first four carriers are replaced. This will probably be a 90,000 or 100,000 ton vessel.
Two to begin with, followed by an improved version a few year later when they replace the Liaoning and CV-001A. Maintaining a six carrier fleet.
Anyhow, those are my thoughts.