1999, My Era of Technology Crushing

An accident caused Jiang Yang, who was reborn into an interstellar civilization, to return to 1999 with a light-speed spacecraft. This year, functional phones are still the mainstream, the Internet has just knocked on the door of public life, new energy is still in the conceptual stage, and global technology is at the critical point of alternation between the old and the new. At that time, no one could foresee what kind of storm this "returner" with starship technology would set off...