Reborn in the Cataclysm: A Two-Dimensional Foil Threatens the World from the Start

【Nation First + Technology Gap + Climbing the Tech Tree + Exploring the Universe + All Kinds of Civilizations】 Monsters, the insectoid race, alien civilizations, natural disasters: every calamity descends upon Earth. Qin Chuan returns to the time before the cataclysm and immediately warns every country. “My name is Qin Chuan. I come from the future! Three years from now, the world will change beyond recognition. I call on every country to cooperate immediately. The thing in my hand is a two-dimensional foil. It can turn the entire Milky Way into a painting. I’ll give you three days. If even one country’s representative is missing when the time is up, I’ll deploy the two-dimensional foil and take the whole world down with me!”