After everyone's tireless efforts and the consumption of countless resources, they finally forged Earth into a closed-loop ecological system.
This way, it could be self-sustaining for quite a long stretch of time.
On Li Chen's side, he also used a Restriction Formation to construct an independent, sealed space and stored within it all the energy he had plundered from across the entire Solar System.
These reserve energy supplies were mainly used to feed the consumption of Earth's ecological circulation system, as well as the fuel needed while Earth wandered through the universe.
Once everything was taken care of, Li Chen, Ye Chuxue, Lian Hongshang, the Little Demon Immortal and the others stood atop Heavenly Pool Mountain, hands clasped behind their backs as they gazed up at the sky.
In just three more days, they would be leaving this place. They might never come back in this lifetime to look at the sun again.
