Not to mention these are originally ROC / Taiwanese claims passed down to PRC when UN recognition formally switched, i.e. technically PRC didn't make these clai

Not to mention these are originally ROC / Taiwanese claims passed down to PRC when UN recognition formally switched, i.e. technically PRC didn't make these claims, but doing the geopolitically responsible / prudent thing of protecting them. Claims which btw predates other parties in the region, or UNCLOS formation, who does not rule on soverignty which makes PRC historic claims absurd and but also as legally valid as any other claims at UN (which does not recognize PCA "ruling" / kangaroo court).