I'd disagree that the PRC's claim to Taiwan is "imperialist". Taiwan has historically been a part of the Chinese nation and the reason that Taiwan and mainland China are separate countries today is that each one ended up under the control of rival parties during the Chinese civil war. Neither the PRC's claim to Taiwan nor the ROC's claim to the mainland is imperialist in nature; both claims stem from the fact that the historical Chinese nation (which includes both the mainland and Formosa) is still, to this day, divided under two governments as a result of an unresolved civil war. Each government's claim represents a desire to conclude the Chinese civil war in their favor, rather than any sort of imperialism.

Sorry, kind of a tangent, but I felt it had to be said.