In Liu Cixin's science fiction novel," The Three-Body Problem," in addition to the Earth Civilization, the Three-Body Civilization, the Singer Civilization, and the Zero Civilization, there was also a civilization called the " Dark Forest Civilization." The Dark Forest Civilization was a highly intelligent and highly evolved civilization. They hid in the darkness of the universe to observe other civilizations and creatures as their main mission. Due to the restrictions of the Dark Forest, they could not establish contact with external civilizations, so they could not understand the situation of other civilizations and could not counterattack. In the novel, the Dark Forest civilization was described as a cold, heartless, and greedy existence. Not only did they strive to destroy other civilizations, but they also tried to control and rule other civilizations through various means. Due to the existence of the Dark Forest Civilization, other civilizations had no choice but to adopt corresponding strategies to protect themselves from attacks and threats.