Year 2031.
The sun ages rapidly and global temperatures plummet.
The southern hemisphere was frozen by extreme cold, the population dropped sharply, and the earth entered the end of the world.
Liu Ming came through time and obtained the magic pen system.
Under the premise that there is no hope in the whole world, he!
He promoted the nuclear fusion of heavy elements, turned stone into a powerful new energy source, and created an unprecedented underground city.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
