Gradually this three- year rotation could no longer fill the needs of the growing population, and the amount of farmland was continuously expanded. Then industry came and the towns grew, and finally Taiwan's first large reservoir, the Tsengwen Reservoir, was built in southern Taiwan.
逐漸的，三年輪作也不足了，人口繼續成長、農地不斷增加，工業來了，鄉鎮一個個興起，台灣第一大水庫「曾文水庫」終於在南台灣矗立。