Earth history

Why do UFOs frequently appear in the sky does the alien kidnapping really exist Yu Zifeng discovered the truth after being kidnapped by aliens: it turns out that aliens are stationed on the back of the moon, the earth is experiencing unknown history and struggle how will an ordinary white-collar company solve these layers of fog, lead mankind to break through the cage of higher civilization and participate in the StarCraft competition... is the end of science really theology come on, open this book of classics and history. you may find a different earth this book is also known as the unsolved mystery and the random guess of the Roswell agreement [parallel world, another earth, all plots are brain holes, please don't take it seriously]