Since the Kiev regime (whose SBU is tightly interconnected with the Azov nationalists) directly funds and provides with weaponry such as 152/155mm artillery and shells (including cluster munitions) to their organized right wing nationalist groups who persistently conduct warcrime after warcrime for the regime, they lost any legitimate claim to the Donbass. The Azovs have shelled civilans in Dontesk for now nearly a decade and on a daily to weekly basis.

Imagine if China funded and armed right wing nationalist groups, who build forts on artificial islands near Taiwan and shelled Taipei weekly for nine years straight to "punish" seperatist citizens of the Repubic of China.

If that happened, you can be pretty sure China would loose any legitimate claim to Taiwan that it once had.