300 Years ago, there was a heavy rain in the world that seemed to never stop.
At the beginning, life was as usual. The cold rain trapped people in wet rooms. People lived as usual, but their moods became moist and melancholy.
But the rain lasted for twenty years, day and night.
Continuous heavy rainfall has caused water levels to rise, flooding a large amount of farmland, leading to a sharp decline in global food production and the outbreak of large-scale famine.
Raging floods, like out-of-control beasts, have submerged most of the world, paralyzing urban functions, rampant epidemics, and collapse of social order.
After fifty years of ups and downs and struggles, the leaders of the great alliance of survivors established a new city in the highlands.
There is some unknown radiation element hidden in the rain that accelerates the changes in the world. Along with the disaster, countless monsters appear. Human survival suddenly becomes extremely difficult, and the global population drops sharply.
Some humans have produced antibodies against radiation in their bodies, and their bodies are covered with a transparent oil film. These people are called the first generation of evolvers, and this year is called the first year of evolution.
The area under federal rule is called a safe zone, and only here can people live an orderly and safe life.
In this polluted world, there is always light under the Federation.
——This is what the federal history book says
Purpose: Give full play to subjective initiative and build a better world
