Building carriers is probably not going to be cost effective for China... Why? Unmanned submersibles... This technology is still black, but believe me that it is a worst nightmare scenario for a fledgling navy.
Two next generation Mk48 ADCAPs, and a sub-surface launched new generation ship killer missile on a small, fast, super quiet, long endurance, expendable platform that can dive very deep. It will be able to loiter for weeks... It can function autonomously with programming, and/or receive ultra-low frequency data bursts. It'll be 30 years before these things are in service in serious numbers, but they will pose an enormous threat to both surface ships and submarines.