The explosion of a solar flare caused the earth to enter an "extreme cold era". The global temperature dropped to minus 60 degrees within 72 hours, and 90% of all living things were extinct. "Ice crystal life" was born in the extreme cold, and humans were forced to go underground or burn "life fire" to stay warm.
Goldfinger: The protagonist Lin Yuan awakens the "Fire System" 72 hours before the end of the world - he can swallow mutant beast crystal cores to upgrade the level of fire. Fire can not only heat and evolve physical fitness, but can also materialize weapons and build mobile fortresses.
Theme: In a frozen world of despair, the warmth of humanity is more precious than fire; when civilization collapses, true strength is not to conquer others, but the ability to protect the ones you love.
