The contact of human beings with the advanced intellectual beings in the outer on over 100，000years ago.Many humanoid beings from the outer space have set up many scientific labs and aviation bases in which dozens of scientists from the earth are working now.This can be proved without any dispute by so many facts throughout the ages.
在同外星高级智能生物的第四类接触中，地球人如梦方醒：原来，月球并非地球的天然卫星，它是10多万年前地外文明建造的一个人造天体，许多来自地外文明的类人生物早已在月球上建起科学实验室和航天基地，地球上的几十名科学家正在其中的某些实验室里工作，古往今来的大量事实已无可辩驳地证明了这一点。
