Merchant Across Time and Space

In a desperate situation, a contract popped up in front of Lin Ye's eyes. Party A: Civilizations of all heavens and realms. Party B: Lin Ye. Trade items: everything. From then on, he became a "catcher" walking in the cracks of civilization. Deliver food to ancient times in exchange for dusty history. Send energy to the magical world in exchange for mysterious chapters. Convey knowledge to primitive tribes in exchange for pious faith. What he was selling were ordinary things from another world. What he brought back were the shining crystallizations of civilizations. When the balance of the two worlds tilts in his hands, Lin Ye discovered that he was trading not only goods, It's fate.