Carrier itself for Great Power Sea Dominator has been greatly weakened. The survival possibility in a hypothetical full scale Sea Power War is low.
In 2030, the carrier won't deploy forward, but backward, much further from enemy. It will be used to grant a safety zone for other purpose.
In a limited war with mid size country, carrier still the most efficient power projection machine, so China definitely need it, especially when China has much less military base overseas.
The role carrier played in the hypothetical war with another great sea power is very much different from the one with a mid size country.
So China will need both Bomber and Carrier, but 10 is too many for China, not because China can't afford, but not worth it any more.
But Bomber will play the most important role, so you can see there is little to none news on H-20, even though it's importance is higher than anything else.
China lack behind on Bomber, but China has prepared all the technique needed, including engine, frame, Electronic warfare, Optical instruments, radar, materials, aerodynamic experiments, undercarriage, weapons. Those sub systems were widely used or tested on other platforms.
China is well prepared for H-20, if not better prepared than US.