Underground Flames Burn Bright: Reborn Before the Apocalypse, I Build an Underground City

[Post-Apocalyptic Rebirth] [Hardcore Infrastructure Building] [Underground Survival] [Ensemble Cast Teamwork]

In his previous life, Zhou Yuan died 720 meters underground. When he opens his eyes again, he has returned to 2031, seven years and five months before the Dark Day.

Seven years later, a veil of dust will block out ninety percent of the sunlight, and blizzards will swallow the cities. He sells his company and properties, then stakes everything on an abandoned mine in Huai Mountain: drilling geothermal wells, stockpiling food, moving in machine tools and cultures, and building an underground city that can breathe, feed its people, and keep producing.

But when the steel doors close, the danger doesn't stay outside. Ventilation, food, seals, bearings: if any one link fails, an entire city could die.

This time, he wants to leave behind more than a shelter. He wants to leave humanity a way to live again.