At 4:30 in the early morning, the sky was at its darkest.
Xu Shu left the Star Tower and walked alongside the Supervision Bureau.
Raising his head, he saw the safety zones still scattered with non-extinguishing lights, resembling a "bustling" metropolis.
——For over a decade, this had always been Xu Shu's perception.
He knew that mankind currently had a total of 361 safety zones, distributed in a rather orderly fashion across different locations on Earth Star, aiding and watching over each other.
However, it was only today that he learned the truth, discovering that safety zones were differentiated not only by location but by rank as well.
From low to high, there were four levels: third-class, second-class, first-class, and the highest grade, the special-class safe zone.
There were only five special-class safe zones.
They were located at the very center, "Tianyuan District," and at four strategic points on the "grid," namely D9, N9, X9, B9.
