Yen Yun-nien is not a widely known hero, but a look at Taiwan's economy during the Japanese era will lead you to the Chiufen Gold Mines and this mining giant.
顏雲年不是家喻戶曉的英雄人物，但若提起日據時代的台灣經濟、九份金礦，就一定會追溯到這位礦業鉅子。