I'm not sure what you're referring to, but my point is that the Chinese cooperation has been minimal after the 90s. They do not endorse transfer of technology even for their own completely indigenous systems.
CX-1 may not be as good as BrahMos, but its land-attack version is extremely potent and dare I say, better than what we have for
'the' intended purpose.
M-20 is the Chinese equivalent of the Russian Iskander. Much better at ABM evasion against all existing systems and planned Indian systems. But Pakistan is also not very far behind in this specific tech.