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The Day the World Ended: A Tale of Hope and Survival

On the brink of catastrophe, architects, scientists, and engineers gathered in secret, their minds racing with concern for the fate of mankind. The world they knew was crumbling around them, and within their grasp lay the only key to humanity's survival — a small metal box. Their plan was audacious yet necessary: to construct an underground city designed to protect its inhabitants for generations. This was the last hope, a lifeline they intended to secure for 200 years so that future generations might grow up without sorrow, ignorant of the world above that was succumbing to darkness.