活动，一个远古时代就已展开的课题。在活动中，人类的步伐逐渐向前迈进。有巢氏构木为巢，使人类躲避了猛兽，保障了安全；燧人氏钻木取火，使人类告别了蛮荒，走向了文明；神农氏勇尝百草，为人类开创了农业，发明了医药；史官仓颉创造汉字，使人类从结绳记事走向造字记事… Activities, an issue that began in ancient times. In the activity, the pace of humanity is gradually moving forward. There are nests of wood for the nest, so that humans escaped the beasts and ensured their safety. The Qiang people drilled wood and took fire to make humans bid farewell to wilderness and to civilization; Shennong tried every herb to create agriculture for humans and invented medicine; Historian Cang Yi creates Chinese characters, making humans move from knot-knotted notes to word-making notes...