Global Cataclysm: Invincible, My Shelter

The protagonist awakens to the shelter system at the beginning, and there is still one month left before a global disaster! Meteorites falling, global warming, ice age... Steel shelter → Tungsten steel shelter → Vibranium shelter... Machine gun turret→Multi-barreled machine gun bunker→Heavy artillery bunker→Light prism fortress... Large RV→Armed RV→Heavy Tank Vehicle→Super Time Chariot This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.