[Apocalypse + natural disaster + shelter + stocking up of supplies + upgrade flow] [the sun goes out + the extremely cold night + the global freeze]
The solar neutrino flux is abnormally attenuated by 17%.
Monitoring station technician Shen Tuo looked at the blue curve and confirmed a truth that could subvert human civilization - the sun is extinguishing.
When the golden finger called the "Doomsday Survival System" was activated, his shelter changed from an underground fortification to a fortress, and from a fortress to a dungeon...
