That was the Third Reich's plan, and since the US saved 10k Nazis from ever facing trial and put Heusinger into power in NATO, I can believe the US would want that. But China would never agree to enslave Ukraine. It's not in their interests.

Lolwut?

Here's how it ends

The Russians take everything east of the Dnieper and also Odessa

If the Europeans know what's good for them they discover the concept of indivisible security

Western Ukraine is balkanized, all the Banderites get concentrated into a micro rump state around Lviv

Like every other major deal the Chinese have quietly facilitated lately they don't get directly involved other than as being a forum for mediation