I Can Upgrade My Shelter

When a ten-kilometer asteroid strikes Earth, humanity's last hope dies with the sun. Dust chokes the sky, plunging the world into an endless frozen night where temperatures plummet to deadly lows. Armed with nothing but a hand-dug shelter and a mysterious upgrade system, Chen Xin must transform his meager refuge into a bastion of survival. As civilization crumbles and resources dwindle, can one man's ingenuity rekindle the spark of hope? In this brutal new ice age, humanity faces the same question that doomed the dinosaurs—adapt or perish.