China has an issue and that is NK and Russia getting so close. Even if Russia continues to fall apart over the invasion they can depend on each other to just barely keep going. Its been shown it is pushing China out and is believed to be one of the reasons why Chinese banks have started to shut down operations with Russia. They are using the idea of scared of sanctions but really its punishment for Russia going to NK and influencing them away from China.

China after all does want land returned by Russia