Technology Is Portable: an Alien Factory

At the beginning, you inherit a black technology factory, and it's still on a different planet! There are mountains, water, minerals, ruins of civilization, and mutated monsters here. Meng Tianhe built a mining factory on the alien planet to upgrade his technology, and brought these black technologies back to Blue Star. He is a pioneer leading the times! Several years later, when humans finally left the solar system, they discovered that what greeted them was not aliens, but Meng Tianhe's interstellar factory!