Rock Cast Sky

In the year when the sky was burned by fire, the remaining humans hid thousands of meters underground. Two hundred years have passed, radiation has locked the surface of the earth, and rock formations have swallowed civilization. Bandits plundered, mines collapsed, and resources were exhausted. Those who survived turned their lives into a living hell in the eternal darkness. Until Lu Shen, a top geotechnical engineer, woke up in a dilapidated grotto with only 37 people left. There are no systems, no panels, no extraordinary spells. There is only engineering knowledge engraved in the bones and blood, and a pickaxe that can cut through everything. When three hundred thousand people stood in the brightly lit underground royal city, and when all the darkness was trampled under their feet, they finally dared to raise their heads. Up, up, through the rock formations that have been isolated for two hundred years, to touch the sky that has disappeared for too long.