I Sold Immortality in the Kingdom of the Queen Mother of the West, and Got Exposed

Mu An arrived on Blue Star by accident, and no one knew he had lived here for a full 5.8 billion years! It wasn't until the modern era that his contract wife reported him for tomb raiding. His memories were uploaded to a brain-computer interface, and he was put on trial before the whole world. But once people watched, they were completely dumbfounded! “You saved your wife? And she stayed by your side for tens of thousands of years, only to betray you in this life?” That wasn't even the most shocking part. The scenes that followed left netizens staring in disbelief! “You taught the Human Emperor how to rule the world? And helped Hou Yi wipe out the ancient Golden Crow clan!?” “Qin Shi Huang was switched at birth with a civet cat, and you led the Ancestral Dragon into the imperial city, where you were made a king before the battle!?” “Laozi, Sunzi, Gauss, Einstein, Newton, and so many others were all clients of your Longevity Club!?” As the memories grew more and more outrageous, the whole world was left stunned, then filled with endless doubts. Mu An hadn't wanted to explain, but just then, the System, dormant for ten thousand years, suddenly came back to life! [Ding! Failed to locate the coordinates of the home planet. Only a final message from the home planet was found.] Regret? Anger? Helplessness? No, no, no. Quite the opposite! As the whole world looked on in disbelief, Mu An smiled, turned around, and stepped into the river of time. He had only two things to do. First: Find his friends... and make up for his regrets. Second: See who's been putting on an act. Netizens: Holy crap! I saw the First Emperor on the pedestrian street, and he invited me to tour the Great Qin Empire! I'm terrified!!!