After I Was Dumped, I Became the Lord of the Earth by Selling Scraps.

Ye Xiu, who was struggling to survive in the Rust Belt, was publicly humiliated by his girlfriend: "You are like trash, you only deserve to stink in the ditch!" He turned around and fell into the arms of a rich second generation. That night, a meteorite fell from the sky and bound the [Star Dome Cornerstone]! Waste products can be turned into black technology in seconds, and endless energy can be extracted from the garbage heap! My ex-girlfriend and the rich second generation still want to step on me? Use alien technology to teach them how to behave! Air purifiers are just the beginning, soil conditioners, individual mechas... My technology empire makes global giants tremble. While others are still fighting for the market, I have set my sights on the stars. The interstellar fleet circled the blue star, and the alien civilization surrendered. Yesterday you were indifferent to me, but today I have made it impossible for you to reach high!