thanks for the discussion. Right now China and Russia are enjoying the best period of strategic partnership between the two giant neighbours in decades because of the need to oppose a powerful common enemy together.Is SCO enough for China to unite the region economically? I doubt it.
What RCEP is for ASEAN region, SCO isn't for Central Asia. Here, China is being blocked by Russia as it considers this region in its sphere of influence.
Probably China will have to sit down with Russia and make concessions in order for it to form a (potential) unified economic block. Dont forget that Russia already has its Eurasian Economic Union (correct name?) for trading with Central Asia.
Its time for China to increased its interests there.
Russia is already punching way way above its weight, severely blocking/stopping China's influence from advancing in Central Asia
If I understand the situation correctly, China is not vying for influence and control over Central Asia against Russian interests. I am sure China and Russia will work out a win-win formula for successful cooperation. As it is, Russia is slowly warming up to BRI, at least not voicing opposition to it openly.
Russia is already stretched quite thin squaring off USA in Europe, Ukraine, Syria, and the Middle East. It can do with some cooperation and support from China at the SCO, especially in the economic and development fields.