Catty Catty Catty

As disaster was about to strike, a group of survivors transmigrated into a desolated world and were challenged to a game of survival. From terrifying acid rains, to endless natural disasters, the heavens burn while the earth scorches, radiation is rampant, and nobody is spared from the dangers of this hellscape. The only way one survives is by building a shelter and slowly upgrading it in hopes of surviving another day. 
Luckily, Su Mo awoke a Doomsday Survival System that allowed him to infinitely level up and upgrade his shelter! The main shelter wooden door can be upgraded into a metal door, which in turn upgrades into a composite gate; the wooden spears can be upgraded into bronze spears, which eventually upgrade all the way into electromagnetic spears... While everyone struggled to survive, Su Mo was fully loaded, and well equipped to dominate the post-apocalyptic world. 
"While some of us are lighting oil lamps, he's been using refrigerators!" 
"The walls in his shelter alone are tens of meters thick, it's the safest place on this planet."
"Before I die, I wish to spend one day in his shelter..."

EndlessFantasy Translation 

My Post-Apocalyptic Shelter Levels Up Infinitely!

LambSheepMutton

Doomsday Calendar Month 3, Day 5. Wasteland time 3.02 am. The third day since the tsunami struck.

On the first night after Su Mo returned to Hope One from the title promotion mission in the group ruins, he…

After Hope One was upgraded, its "comfortable" special ability ensured that 95% of the ship's pitching and rolling was negated, despite the ocean raging outside.

However, when Su Mo lay in bed, the thought of the tsunami disaster that was about to completely erupt soon occupied his mind. His sleepiness disappeared and all sorts of ideas filled his mind, one after the other.

The group ruins had closed four hours ago. His sister was also teleported back to Tundra One.

The good thing was that Tundra One had now assembled twenty large ships and also gathered close to one hundred and fifty smaller sand ships into its fleet.

Dire Situation, A Glimmer of Hope at a Dead End