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

After giving the order, Jack entered the treatment room which was almost forgotten by him.


He checked the specific information of the treatment room first.


"Equipment: two intelligent mechanical doctors, a particle transplant machine, and absolute disinfectant!"


Jack was not satisfied with the configuration.


Now the treatment room was completely out of standard, so Jack used tens of thousands of survival points to upgrade the treatment room.


After upgrading, the current treatment room was able to perform perfect internal surgery.


In this way, if his friends had any special situation, they could be saved here.


Of course, Jack was confident that they wouldn't get hurt.


There was only one purpose, which was to be well prepared.


After doing a lot of things, Jack moved a deck chair and walked out of the doomsday refuge.


He closed his eyes and was about to go to sleep.


Chapter 264 Take all the Defensive Measures in Advance