Many people say that Liu's "Three-body" is not only a science fiction novel, but also a human novel, because although this novel is about science fiction, all the contents are conceived and conceived based on the evil side of human nature. On the surface, this novel is about the crisis brought to human civilization by aliens invading the earth, but after reading it, we will find that it is still about human nature in the face of the earth crisis. Because this novel is about real death and all human civilizations, in this case, both leaders and ordinary people will face their own choices, and this choice will go beyond morality and the bottom line, which is also a very obvious side of human nature, so it boils down to the fact that human nature is selfish after all, which is also human nature.

"Three-body" mainly tells the story of a man named Ye who accidentally came into contact with an alien civilization because of his disappointment with human nature, hoping that the alien civilization would come to the earth to save and purify it. However, three-body alien civilization, their idea is actually to occupy the earth and destroy human civilization, and in this case, the earth people also fought against alien civilization.

The reason why this novel can be appreciated by so many people is that there are far more sci-fi elements in this novel than many sci-fi works, and many details also promote the development of the plot. Moreover, this novel is also a multi-line narrative way, and the scientific design of this novel is also very realistic, and it is easy for the audience to feel a sense of identity after reading it.

Finally, what Bian Xiao wants to say is that the basic core of any good novel is the description of human nature, so there must be a reason why this novel can be recognized by readers, and the themes displayed, including the significance, are also very profound.