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This article mainly talks about the trivial things encountered in the growth process of the sister Li Sa, who is gentle on the outside and rebellious on the inside, and the sister Li Xiang, who is completely opposite to her. From the perspective of the post-00 generation, looking at the changes around them in the context of the times, people can pay more attention to the cultivation of the next generation of successors to the motherland. Write our youth with pen.

At the end of the 21st century, the earth's civilization has further developed and resources are in crisis. In the end, due to water resources problems, two developed countries used nuclear weapons, leading to the demise of more than half of the world's humanity and the expansion of nuclear pollution around the world. The earth was finally overwhelmed, and a series of chain reactions caused by nuclear pollution fell on mankind one after another. In the end, biological mutation caused by a strange "blood rain" once again brought crisis to people. Is it survival or destruction? Where should humans go?