Apocalypse: I built the Supreme Sanctuary a year in advance

The wasteland era has arrived. Fortunately, Xu Zhengyang obtained the doomsday survival system a year in advance and built a supreme shelter from scratch in his basement!
resident Evil!
Radiant wasteland!
Ice Age!
……
No matter what kind of natural disasters occur in the outside world.
The temperature in Xu Zhengyang's shelter is always kept constant, making it spring-like all year round.
Starch manufacturing plants use carbon dioxide to make starch all the time;
There are always endless fresh fruits and vegetables in the vertical farm;
The AI-automated workshop never stops, producing engineering robots, power armor, and swarm drones 24 hours a day...
Starting from scratch, build a supreme shelter that can withstand any natural disasters and man-made disasters;
Then upgrade step by step, and eventually build the shelter into a planetary fortress that can sail in the sea of stars, and rush into the endless galaxy!
[Tags: no heroine, lone wolf, apocalypse, shelter, upgrade]

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