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His personality development was defective when he was a child. He lost his parents when he grew up. After recognizing the value of his own survival, the protagonist who has become a writer eventually suffered from schizophrenia due to depression and personality development. Although he sought medical treatment from Dr. Li, his condition worsened due to lack of follow-up consultation, and he eventually committed suicide, leaving only a notebook recording his monologue. The notes record what the parents, relatives, friends, elder brother, younger brother, strangers, and the "four selves" thought, saw, and heard about the surroundings, their opinions, knowledge, perceptions, and opinions. In fact, all this is just the protagonist's delusion.

This is a work that combines serious philosophy, literature, knowledge, science fiction, suspense, humor and fun. The story tells about the Earth about a hundred years later. Technology has become more and more advanced. Artificial intelligence, quantum computers, and Mars immigration have become a reality. However, war has never stopped and has become increasingly severe. One day, a group of aliens with human appearances came to the earth and brought extremely high technology to threaten mankind to unify the earth into a country called the "Earth Republic." Due to the disparity in technology, mankind finally accepted its fate. Not only did the aliens not harm anyone, they helped humans solve many problems and generously shared their technology. Their background, origin, origin, culture, knowledge, as well as the reason and truth of coming to Earth are a mystery.