Hard Life in a Post-Apocalyptic Shelter

The end of the world is coming, meteorites, tsunamis, high temperatures, cold snaps A war without noise is about to begin, survival or death The reborn Lin Hai carries the shelter system and will fight for survival Iron door→Three-layer iron door→Alloy iron door→Vibranium iron door Machine gun → Gatling gun → Thunder cannon → Laser cannon This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.