Although Taiwanese call themselves yams and call mainlanders taros, in fact neither yams nor taros are native Plants to this soil. It's only that both of them have grown in this earth so they have become common plants here.
雖然台灣人愛以蕃薯自稱，以芋仔稱呼外省人，但其實蕃薯、芋仔都不是本土植物，只不過它們都生在這塊土地，所以成了土地上常見的植物。