The Star-Level Shelter's evolution level had risen to twenty-one stars.
Its total area had expanded to 90 million square kilometers.
At the same time, its maximum population capacity had increased to 45 billion, while its absolute limit could accommodate 60 billion.
Furthermore, unsurprisingly, the shelter's overall defensive capabilities had been comprehensively upgraded.
The armor defense alone was strong enough to withstand bombardment from Energy Cannons with an energy intensity of 350.
Moreover, the amount of time it could endure sustained bombardment had also increased significantly...
It could basically deal with most of the threats ahead.
But that still was not what Li Chen wanted.
Defense alone would not do.
The level of the weapons and equipment had to rise as well.
And the researchable levels of those weapons and equipment
were closely tied to the Star-Level Shelter's own evolution level.
Therefore, Li Chen still had to continue evolving the Star-Level Shelter.
With that in mind, he once again began the Star-Level Shelter's Second Evolution without hesitation.
Ding! Congratulations! You have evolved the Star-Level Shelter Lv22 (Twenty-Two Stars) into the Star-Level Shelter Lv23!
Ding! Congratulations! You have evolved the Star-Level Shelter Lv24 (Twenty-Two Stars) into the Star-Level Shelter Lv25!
Ding! Congratulations...
In one go, Li Chen raised the Star-Level Shelter's level to thirty.
He directly evolved the Star-Level Shelter to Thirty Stars!
At that moment, the Star-Level Shelter
already covered the entire Earth in total area.
In fact, the Star-Level Shelter's area even slightly exceeded Earth's surface area.
Earth's surface area was approximately 510 million square kilometers.
Yet at that moment, the Thirty-Star Star-Level Shelter had already reached a total area of 650 million square kilometers.
If the Star-Level Shelter were unfolded and turned into a planet,
then its current volume would already surpass Earth's.
Of course, it