Transmigration: the post-apocalyptic future + ordinary people of the modern world + an ancient charlatan (transmigration + science fiction + fantasy + war)
A story spanning the future, the present, and ancient times.
Earth is invaded by aliens. In middle age, the male protagonist inadvertently brings the world to the brink of destruction and dies consumed by regret. His old friend, Dr. Bai, discovers a hole in time and space and pulls the protagonist from his youth into the future to take part in a plan to save the world. From then on, the protagonist travels between different eras in parallel worlds, gathering the resources Dr. Bai needs while making a fortune along the way.
