they are not natural allies because Russia is a European orientation.So now you at least admit that Sino-Russian relations have almost always been confrontational. While the past is never a safe guide it is a guide.
But Putin is opportunistic -as is Xi -and they cooperate where their interests lie.
The problem is we are forcing Putin more and more into the Sino sphere -as European sanctions take hold
and generalized Russiaphobia disturbs trust building