The God of War from another world was seriously injured and traveled across time, becoming a cowardly and spurned son-in-law in the apocalypse. Awakening the ability to "exchange all things", exchange a wedding ring for a box of cans, and open the only supermarket in the apocalypse. Use a pack of cigarettes to make the fierce mercenary captain a gatekeeper, and use a bottle of Laoganma to form an alliance with the Iron City State. When zombies besieged the city and powerful enemies coveted his warehouse, he pushed open the back door of the supermarket, and behind him was an army of undead from another world lined up neatly. "The rules of survival in the apocalypse? No, I only talk about equal exchange here."
