1969年5月18日凌晨,一架没有任何标志的神秘飞机闯入我西北某核试验基地上空。在空投下两个笨重的大箱子后,这架行踪诡秘的飞机也悄然离去。大箱子落地后,伴随着一阵噼噼啪啪的连环爆炸,系在箱子上的降落伞被炸得粉碎,一阵狂风刮来,碎片被吹得上下飞舞,瞬间便无影无踪。在萧瑟的戈壁滩上,只留下两个印着“中国科学院设立,请勿乱动”字样的木箱孤零零地躺在那里,任凭风沙肆虐…… On the early morning of May 18, 1969, a mysterious plane without any sign broke into a nuclear test base in northwest China. In the air dropped two bulky big box, the mysterious flight of the plane also quietly leave. After the big box landed, accompanied by a burst of crackling burst of explosions, tied to the box on the parachute was crushed smash, a gust of wind blowing, fragments were blown up and down, instantly disappeared. On the deserted Gobi Desert, only two wooden boxes with the words “Chinese Academy of Sciences set up, please do not move” are left alone, despite the indiscriminate sandstorms.