On an ordinary afternoon in 2025, Ye Ling, a retired special forces soldier, inherited his grandfather's humble community supermarket. In an accident, he triggered the ultimate secret hidden in the supermarket-this place is actually the hub connecting thousands of time and space. From then on, a bottle of mineral water can be exchanged for heirloom treasures, a pack of compressed biscuits can reverse the fate of an empire, and a militia manual is enough to rewrite the course of civilization.
This seemingly ordinary supermarket has the entire power of modern civilization on its shelves. Ye Ling takes a mortal body and does the deeds of gods, but he always sticks to his true nature. Facing the desperate situation of Yashan in the Southern Song Dynasty, the tragic situation of thousands of miles of starvation in the late Ming Dynasty, and the survival of his comrades on the interstellar battlefield, he used his wisdom and materials to carry out "dimensionality reduction strikes" one after another. When he was scheming with Qin Shihuang, trading with the Elf Queen, and helping the survivors of the wasteland to rebuild, he seemed to be scheming with evil intentions, but when it came to the interests of his family and country, the patriotic passion in this young man's bones had never changed.
Now, the door to time and space has been opened. Ye Ling will travel through various worlds on the verge of collapse, and while completing transactions, he will explore the ultimate secret behind the system about the fire of Chinese civilization. This road was destined to be extraordinary, and he chose to become the night watchman of civilization.
