I honestly don’t know why or how people seemed to have formed the consensus that CVNs are inherently offensive weapons and only useful for attacking far away places.
The biggest advantage offered by nuclear propulsion is range and endurance. But for long range combat perseverance, you still need a large network of overseas bases and/or significant UNREP capabilities because no amount of range on your carrier can magic up bombs or missiles for your airwing out of thin air.
For defensive operations, CVNs offer China significant benefits that are seriously worth looking into in the form of enhanced range, speed and endurance, which is very important given the geographical realities facing the PLAN since it takes a lot of time and effort to get a carrier past the first island chain and out into the open waters of the pacific.