The moment the blade touched his skin, Rezai Peruzzi heard the sound of wind—not the wind of the knife, but the sound of a golden contract slowly unfolding in his mind. He was the son of a blacksmith from a village in the southern part of the Sassanid Empire. He was raped and sent to the Second Cannon Fodder Battalion of the Persian Bastion. He was currently kneeling on the execution ground, waiting to be beheaded. Behind him were piles of corpses of his colleagues, and in front of him was the blood-stained scimitar of the prison officer. [Awakening of the Trade System of All Worlds] A suspended contract appeared in his consciousness: the objects of the transaction - the Han Dynasty field soldiers, the remnants of Rome, and the Turkic tribes of the steppe who came here; the currency of the transaction - knowledge, skills, and loyalty; the rules of the transaction - for every successful trade, you can obtain the unique resources of the other civilization: iron, grain, horses, lost smelting techniques, and even living craftsmen and warriors. But when signing a contract for the first time, one thing needs to be sacrificed - his memory. Rezai bit his finger and signed his name in the void. The Land of Ten Thousand Dynasties is a continent torn apart by rifts in time and space. Every three to five years, civilizations from different historical dimensions arrive. Gunpowder failed, electricity failed to operate, and only cold weapons and basic handicrafts could survive. The Qin Dynasty cavalry and the Roman legions appeared at the same time, and the Mongolian cavalry and the Japanese warships faced off on the same plain. All descendants stay permanently, fighting, trading, and merging with each other. And Rezai, the son of a blacksmith abandoned by fate, will use a contract to build a Persian trade throne in this bloody gap. But what he doesn't know is that every trade is awakening some kind of sleeping existence...