Is this China bullying in international waters or are they supporting North Korea against UN Security Council sanctions which Members unanimously voted for?

If NK is still shipping munitions to Russia then this could be China helping Russia while pretending it is about water territorial rights.

Member state… authorized to:

Inspect North Korea cargo on land, air, and sea, if the state has reason to believe that it contains prohibited items and seize any prohibited materials or technologies

https://www.armscontrol.org/factsheets/UN-Security-Council-Resolutions-on-North-Korea

Russia and China always do this shit, it’s going to be very problematic when one of their poorly trained pilots screws up and kills a bunch of people and themselves.

Shanghai Daily columnist Andy Boreham pointed out… “the area they claim the incident happened is within China’s EEZ… Innocent passage is allowed but military aircraft do NOT constitute 'innocent passage”

Kind of like the many Chinese military incursions in the airspace of the Taiwanese EEZ, eh Andy?

Also known as operation “stop hitting yourself”.