You're smart, I like you. What your saying is absolutely correct which is exactly why China by and large doesn't build the large sea crafts and instead focuses on littoral patrol ships. Even the US had noticed it.
The US states it's because the Chinese navy is focused on power at home and not power projection. I say it's for sales purposes.
Now, China also makes the large super ships. But those are made in small numbers. They have their type 55 destroyer that has been compared to the Agies which I think there are 8 and their 3 aircraft carriers. But those ships are basically marketing brochures. They catch the attention of the media and not much else. These you hear talked about all the time, and China sails them everywhere for photo ops.
I know it's weird, but it actually is easier to think of China as a corporation that's gone off the rails rather than a country.
True, while a lot of it is clearly for business purposes. I may have been flippant stating their blue water navy stuff, that absolutely won't sell, is just marketing material. In truth, their blue water Navy moves which only began like 10 years ago or so is in fairness quite impressive. They've created large destroyers that the US is saying is on par with Ageis and aircraft carriers that have shown similar sortie rates to UK's carriers. If it really was just for show as I'm trying to say, it would have probably been more like Russian equipment. What with their sole aircraft carrier constantly catching fire and their stealth fighter jet that they're scared to put into the front line. The fact that China can demonstrate the equipment working on a fairly consistent basis in different weather conditions should tell me they're much more serious about all this than I give them credit for.
That said, this shift is too new to know what they're really thinking. Plus, they absolutely have been parading around the Type 55 to future prospective buyers of their equipment. Yet there's also clearly some movement towards actually being able to use this stuff. For example about 4 years ago, India showed off to the world that they could operate both of their aircraft carriers simultaneously. Something that at the time at least China was unable to do. However, last month they sailed all three of their carriers out simultaneously. Clearly this is an attempted signal that we do have enough trained officers and we're not just building equipment without training soldiers.
China's just done the this stuff is for sales for so long it's honestly hard for me to see it any other way. On top of them actually doing the training starting so recently that it's hard for me to say this is a permanent shift and not just a way to throw off the comments from India mocking their training.
All in all, this IMO is why China was befriending Russia to begin with. They have powerful technology, but ironically they don't have the bodies to put behind them. The one child policy has basically made every parent in China refuse to let their kids become soldiers. Russia on the other hand seemed to have a limitless supply of bodies to throw at a problem as they're doing in Ukraine. With China's best friends constantly facing off with terrorists, Pakistan, Myanmar, Saudi Arabi, UAE, Egypt and many more I think it made perfect sense China wanted access to Wagner to deal with this. Then, uh... Well Russia PROVED they have the bodies to throw in the grinder because they threw the bodies into the grinder.