The protagonist travels to ancient times and becomes a dying man assigned to guard the imperial tomb. He accidentally activates the [All Things Entry Sign-in System]. In the dangerous forbidden area of the imperial mausoleum, he signed in every day, and what he got was not the martial arts elixir, but future technological products such as "Gene Optimization Fluid", "Nano Combat Suit", "Quantum Communicator", "Anti-Gravity Engine Blueprint". He used the system to see through the essence of all things, modify the life script, and quietly established a huge underground technology empire under the imperial mausoleum. A hundred years later, the dynasty is about to fall, foreign enemies are knocking on the door, and the so-called "land gods" are rampant. The protagonist comes out of the mountain with scientific and technological power that can crush the entire era. He acts like a god and performs scientific deeds to reveal to this ancient and ignorant world what the real "miracle" is. He will step by step unravel the science fiction truth behind the spiritual energy, immortality, gods and demons in this world, and lead the entire civilization into the sea of stars.