In the Underground World, illuminated by distant magma, everything was bright and warm.
People from the surface would occasionally come down to the Underground World to take a look and relax.
This place looked remarkably like the surface world back when the sun still existed.
For those who had followed Earth on its long wandering journey, this was the first time they had truly experienced what the surface had been like when there was still sunlight.
Living in the Underground World year-round was inevitably somewhat oppressive. Being able to come here and unwind was an immense pleasure for many people.
Li Mu Chuan sat in a tree, watching footage transmitted from Earth's satellites.
In the footage, a massive snow-white planet could clearly be seen sailing through the vast universe.
Without the sun, the entire Earth had turned completely white.
"According to the Scientific Research Department's latest invention, an advanced technology called the Nano Wall will soon be introduced. Once the Nano Wall is developed, it will be able to cover Earth's surface, allowing us to live above ground."
As Li Mu Chuan watched the footage, a notification popped up.
It was a video announcement sent to everyone by the Command Center above.
Li Mu Chuan tapped into it when he saw the notification.
Only then did he realize that they had already fully mastered the Nano Wall technology and had begun attempting to develop it.
Once the Nano Wall was put into use, it could be used to build surface shelters. At that point, people would be able to continue living above ground.
That would greatly ease a series of problems underground, including cramped living space, resource shortages, and more.
Especially after hundreds of years of wandering, many Underground Shelters had undergone several major rounds of repairs, yet the damage