I came from the future and traveled to Qin with the elixir of immortality. I became friends with Qin Shihuang, made him immortal, and told him about the development process of China. Qin Shihuang used his own wisdom to unify China and eventually the world. From then on, people all over the world lived happily in the global village. However, the long-term peace brought about the explosion of earth's technology.
