One thing to keep in mind is that China as well as in general authoritarian regimes are not innovative societies. They are only able to copy others, in order to build any of this stuff they have had to resort to industrial espionage because they simply don't have the brain power to do it themselves. Authoritarian regimes do not lead to innovation or invention mindsets. They may have a lot of things that look spectacular on the outside but may be all show and no go on the inside. The current state of Russias military bears this out. Just because the claim to have a sub or aircraft carrier that has certain capabilities and looks the part does it mean that they actually have it if you know what I mean.