Energy Crisis? Build a Dyson Sphere Right from the Start!

When he was in college in his previous life, he became obsessed with a game called Rise of Interstellar Civilizations. He played it for a full 2,000 hours and was more interested in it than eating and sleeping. At that time, in the early stages of the game, in order to upgrade his civilization level and meet energy needs, he built dozens of Dyson spheres and even absorbed the energy of black holes. As a result, he accidentally traveled to this parallel world. A world that is highly similar to Earth, with similar civilization, culture, and technology. The only difference is that the world's energy resources are extremely scarce. As soon as He Yifan traveled through time, he inherited the factory left by his parents. In just five years, this small workshop and factory became a world-famous savior of mankind! …