Build an Interstellar Civilization Starting from a Battery

Wang Quanyou graduated from elementary school, delivered food for four years, and lived in an unfinished building for three years. That night, he picked up an AI material printer abandoned by an alien civilization on the roof of the building. By adding two kilograms of steel to a waste battery, you can print a super battery that lasts for 31 days; using a waste machine tool and adding a warehouse of steel, you can build a fully automatic industrial machine; when you have lunar mines, fusion energy, and a space dock, you can even build starships. But the integrity of this machine is only 18.4%, And every print is consuming the little remaining energy. In order to prevent it from turning into a silent white box again, Wang Quanyou could only start from a battery, make money, build factories, save energy, build mother machines, and turn an alien waste product into an industrial system that covers the solar system. Many years later, mankind's first interstellar city was completed. In the center of the city museum, there are no starships or weapons, only a worn-out electric car battery. Because mankind is the first step to become an interstellar civilization. It's just a delivery boy who doesn't want to waste another forty minutes changing batteries.