Having embassies, recognizing the other side's sovereignty and not considering them a rebellious province of your own state sounds very different from the China

Having embassies, recognizing the other side's sovereignty and not considering them a rebellious province of your own state sounds very different from the China/Taiwan situation to me. Germany's two halves treated each other as neighbors and did not consider the other side an opponent in a war that's temporarily paused (after the initial conflict, but that was mostly the Soviets trying to take Berlin by starving the population). In case you're wondering: the Berlin Wall does not suggest differently, it was meant to stop people from fleeing the socialist East Germany ("Republikflucht", literally flight from the republic, was a crime in the GDR, and they killed quite a few that sought freedom from the "worker's paradise"), it was never meant to keep invaders out.