"that territory"

you mean chinese territory that the fascist losers of a still unresolved civil war against communists fled towards and the only reason they were allowed to exist and not lose completely was foreign intervention and imperialism by the US. If without imperial intervention and medling Taiwan ,a part of China before the revolution, would have been no different in being liberated and part of the PRC as any other part of China then it is its existance that is a historical lie and a colonial remnant