Alien Scavenging: My Technology Is Hundreds of Years Ahead of the Earth's

When the end of the world just erupted. The male protagonist traveled to a highly civilized planet that was baptized by war. Started a journey of scavenging everywhere and collecting a large number of alien weapons. "You have 7 days left to return to Earth, please collect supplies as soon as possible." The hero returned again 7 days later. The earth has been occupied by a large number of zombies and alien species, and a large number of survivors have become food. Just when humans feel desperate. A spaceship appears in the sky. "Humans, don't panic, I just happened to try out the space battleship I picked up." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.