５０万年以前，人类还在“沉睡”，而地球正焕发着勃勃生机。北京周口店，在古人类占据主宰地位之前，大型哺乳动物是那里的主人。然而，随着第四纪冰川运动进入间冰期，动物们无法适应环境，只好逐渐由北往南迁移，找寻更舒适的栖居之地。２０世纪６０年代末，考古学家在台湾? Half a million years ago, mankind was still “asleep”, and the earth was full of vitality. Beijing Zhoukoudian, before the ancient human dominance, large mammals where the owner. However, as the Quaternary glacial movement entered the interglacial period, animals were unable to adapt to the environment and had to migrate gradually from north to south in search of more comfortable dwelling places. In the late 1960s, archeologists in Taiwan?