Global Ice: Doomsday Catastrophic Era

Catastrophe strikes: Abnormal solar activity causes the Earth's magnetic field to become disrupted. The global temperature plummets to minus 70 degrees within three days, and then begins a decade-long era of "absolute zero". 99% Of humanity died out due to cold and hunger in the first year, civilization collapsed, and order was lost. Evolutionary sequence: Extreme cold is followed by extreme heat, acid rain and biological mutation. A very small number of surviving humans have awakened the "gene lock" and evolved by swallowing the crystal nuclei of mutant beasts, gaining abilities such as fire control, strengthening, and space.