The thing to note is just how much cooperation there has been between the Chinese and the Russians on the electronics for these, and new stuff like the new Russian Command and Control aircraft, or the TU-160 upgrades.
The Russians design the Hardware, and the Chinese are providing the electronics.
~The Russians design the Hardware, and the Chinese are providing the electronics.~
You might be kidding, right?
And as for a topic I think an idea of extensive naval build-up there isn’t really smart. 80 ships in a Black Sea would make it resemble a shopping mall parking.
And let’s remember a choking point in Bosphorus.