Global Destruction, Choose Controllable Nuclear Fusion at the Start

The sunspots are abnormal, mankind will usher in an ice age, and shelters will be built around the world. However, what everyone does not know is that in forty years, the sun will erupt in a helium flash and the world will be destroyed. All underground shelters were destroyed. Isei was reborn from the future and chose controllable nuclear fusion at the beginning, ushering in the era of interstellar navigation. Everyone thought Issei was crazy because this was simply impossible with current technology. "Long Guo is also crazy. He actually agreed?" "In order to escape the Ice Age, you started the age of interstellar navigation?" However, when Yi Cheng came up with controllable nuclear fusion technology, the whole country immediately became a sensation. With the development of technologies such as Star Destroyers, Star Battleships, Curvature Engines, and Space Jumps. The era of interstellar navigation has officially begun, causing a sensation all over the world! "Dragon Kingdom, take us with you!" "I regret it! I shouldn't have fled the Dragon Kingdom in the first place! I want to come back!" "The sun is going to die! Mr. Issei, we know we were wrong, don't abandon us!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.