Civilization reincarnation + no system + technology time travel
"We are not the beginning and we will not be the end."
A seemingly developed civilization is locked in a cage where the speed of light does not change, and the trapped beasts still fight;
A seemingly huge empire has reached a critical point of survival;
A simple and honest boy who was born at the bottom of the empire had a dream that seemed both real and illusory;
A civilization relic, a bold guess, a crazy plan, just to find variables from the established cause and effect.
The fire of salary should shine on the stars...
