From a Russian perspective, China is a distant potential threat, whereas the West is an immediate and present threat.
I don’t see China forward-deploying troops towards Russia, supporting insurgency and treasonous elements to subvert the Russian political system, and imposing economic measures to impoverish Russia. The West does it for 30 years.
“I don’t see China forward-deploying troops towards Russia…”
They don’t need to. Chinese economic power alone is making China very attractive to people in Eastern Russia.