On January 1, 2022, doomsday came to the earth, and the whole world would be exterminated.
Jack was accidentally reborn three months ago.
Knowing that the end of the world was coming, he immediately began to build a refuge.
He also activated the Doomsday Survival System, which could help him constantly upgrade his refuge.
The bulky iron door had been upgraded to a titanium alloy fire-resistant insulated door!
The brick concrete walls had been upgraded to special space metal walls!
The power system, pipeline system, material storage system, and active defense system had all been upgraded.
Jack's refuge was as complete and elaborate as a space station!
When the other survivors were still struggling to survive in the ruins of the apocalypse, they suddenly saw a huge refuge.

When Doomsday Comes, I Can Upgrade My Refuge Infinitely

Jack was still observing the situation in space with an astronomical telescope when Jera spread the rumor that Jack was an alien in the Union meeting hall.


The three satellites that had been rotating for a long time were completely hidden in the dark night. Only Jack with his visualization glasses could see them.


This was the effect of the system on the three satellites. They were not only invisible but also completely concealed in the signal source.


The data of the invisible system was updated every second on the three satellites, so they could still adapt to the environment of the universe.


In this way, they could completely guarantee that they would not be attacked by any aliens.


After settling down the whole environment, Jack called the members of the hunting squads to have a discussion.


"Is there anyone who can help me to explore space? I will reward those who have made great contributions!"


Chapter 151 Prepared to Invent a Spaceship to Surprise Boss