The barrier is broken, and human civilization has been broken for 50 million years. There are no ruins here, only evolved ferocious beasts and wild nature. Mi Tian, a top student in science and engineering, leads a team of four to defend the "City in the Sky", using knowledge as salary to rekindle the fire of civilization. From pulling trees with bare hands to making iron in blast furnaces, from hunting and gathering to the roar of steam. Kill carbon turtles to make armor, kill sickle bugs to make saws, and induce turbulence to generate electricity. When the roar of industry echoes in the virgin forest, this hard-core farming that spans time and space has just begun!
