Background: In 2034, the sun suddenly entered a period of extremely low activity. The earth's surface temperature plummeted by 60 degrees within three months, and the world entered an ice age. The order of human society collapsed, and survivors turned to underground cities and thermal insulation strongholds to survive. Extreme cold not only brings death, but also triggers the "ice transformation phenomenon" - some humans awaken special abilities (ice control, thermal energy induction, space folding, etc.); Temperature becomes a currency unit, and heat is wealth; the major survivor bases are divided, forming an apocalyptic law of the jungle and the strong.
