In the middle of the last century, the Kendora Experiment broke out in New Sun. This experiment involves a genetic mutation, and the physical body has undergone tremendous changes. For a very long time, life was worse than death.
The expansion of the experimental area forced the people to relocate...
[Pollution progress 1%…50%…]
"If the progress is full..."
"Then the earth will no longer exist in the future"
Select, monitor...
[No logic, please do not regard the timeline as real]
Concept: a crazy spreading environment