When 28-year-old programmer Lin Yu was selected by a mysterious system called [Civilization Fire] late at night during an ordinary overtime job, he thought it was just an absurd dream.
Until the system coldly informed: In five years, an alien civilization named "Reapers" will arrive in the solar system. According to one million simulations, the survival probability of human civilization is only 0.03%.
Facing this destined "civilization assessment", personal power is as small as dust. Lin Yu made the only choice that could change his destiny - handing over the system and future to the motherland he trusted most.
From then on, the wheel of history suddenly turned.
The "Pangu" base hidden under the desert rises from the ground, controllable nuclear fusion lights up the underground sun, the "Nantianmen" aerial platform builds a star ring defense line, and the "Guanghan Palace" on the back of the moon becomes an eye staring into the deep space. A technological explosion involving a nationwide effort and a race against time has quietly begun.
But this is not just China's battle. As mysterious early warnings save thousands of lives and disruptive technologies are gradually applied, the world's attention turns from suspicion to shock. Lin Yu and his team, side by side with iron-blooded generals, academicians, and international partners, struggled to weave a line of defense for a community with a shared future for mankind in the undercurrent of global competition.
However, when the countdown reached zero and the Reaper fleet arrived as scheduled, they discovered that the most cruel test did not come from the stars...
