According to a joke told by geologists, as the years pass and the mountains of the Central Range wear down, the Taiwan Straits will gradually be filled up, joining Taiwan to the Chinese mainland. In this way "national unification" will really be achieved.
地理學界的玩笑是，假以歲月，中央山脈越來越低，台灣海峽被填滿，台灣和大陸連起來，「兩岸」就真的統一了。