And they're flippant allies.

They are not allies. They are trade peer. You don't need to like or be liked with trade peer.

They're probably just sell Russia out again.

When they did it first, to do it again? For the millenias of trade with China all we had was only small border clashes, nothing serious at all.

We perfectly traded with China when nobody know that America exists (including vikings), not even talking about USA. At the same time, western states periodically tried to invade Russia, I think it is a long enough history to make some conclusions.

And they're flippant allies.

They are not allies. They are trade peer. You don't need to like or be liked with trade peer.

They're probably just sell Russia out again.

When they did it first, to do it again? For the millenias of trade with China all we had was only small border clashes, nothing serious at all.