Solar radiation increased sharply without warning, and the surface temperature soared to 70 or 80 degrees. The earth instantly became a high-temperature purgatory, and humans faced the desperate situation of being roasted to death. The survivors hid in underground bomb shelters, where physics researcher Lin Chen and doctor Su Qing led everyone to survive as limited cooling equipment and resources were gradually exhausted, and they relentlessly searched for ways to lower the earth's temperature, just to continue the human fire.
