Yin Li, a modern agricultural student, accidentally traveled to the war-torn late Northern and Southern Dynasties and possessed a young refugee boy of the same name who fell beside a dry river bed and was about to starve to death. When he was about to die, he held half a moldy plum core in the mud of the river bed in his mouth. While the sour taste filled the air, a memory that did not belong to this world flooded into his mind - it was the long-lost fragment of the "Mountains and Rivers Sheji Tu" that he had seen in a museum in his previous life. What was even more astonishing was that along with the memory, there was a clear vision marked with the nodes of mountains, rivers and earth veins. He was surprised to find that this mold core was actually one of the carriers of the "Thirst Quenching Map" made by the founder of the previous dynasty using secret methods. It was not a treasure map, but an ecological secret book that carried the "dragon vein" of this land (that is, key geography, resources, and climate information).
