Traveling Through the Apocalypse, Exchanging Cookies for Gold at the Beginning

Apocalyptic dual wear + storage space + decisive killing + single female protagonist + stocking up + steel torrent Xu Yun, an unemployed young man, thought his life had reached a low point, until he was hit by a meteorite. He had no system, no mission, and only one ability: a mysterious device that can open the subspace passage to the doomsday world! While others were struggling to survive in the apocalypse, Xu Yun was "buying and selling" between the apocalypse and reality: he could pick up the gold in the bank occupied by the zombies, and take the black technology in the omnic ruins... Relying on the ability to travel between two worlds, using cheap food as a bargaining chip, he quietly accumulated gold and lost technology in the wasteland world. From a "lone wolf" adventuring alone, he gradually established a survivor alliance that gathered engineers and warriors. As his power grew and the world deepened, he discovered the interstellar conspiracy behind the meteorite arrival transmission device...