I'm Picking up Trash in the Universe, and My Country's Science and Technology Points Are All Full

[National flow + black technology + interstellar exploration] Lin Yuan, a debt-ridden small owner of a scrap collection station, accidentally awakened the "Deep Space Salvage System" while cutting scrap metal. He can plunge his consciousness into a dead dark space of the universe - a graveyard of countless interstellar civilizations, with floating battleship wreckage, planet fragments and lost super technology. However, salvage is accompanied by fatal dangers, as terrifying creatures called "Void Eaters" roam the dark realm. Lin Yuan almost died during the first salvage, but he brought back a piece of battleship armor that could not be cut. He immediately understood that this thing couldn't be played by himself, and it would destroy the entire planet if he was not careful! "After much thought, the only person who can catch this baby is the father of the country!" He decisively dialed a mysterious phone number. From then on, Daxia's technology tree began to climb at an incredible speed. While Yingjiang was still showing off his sixth-generation aircraft, Daxia's "Nantianmen Project" had been silently launched, and space-based kinetic energy weapons covered the world. When the advance fleet of the alien civilization arrived in the solar system and prepared to "clean up" this primitive planet, what greeted them was the ready-made Daxia Star Fleet armed with countless scavenging technologies!