What is the three-body talking about?

"Three-body" tells the history of mutual communication, mutual hostility and life-and-death struggle between the earth civilization and the three-body planet, and also shows the hard course of three-body civilization struggling to survive in the harsh environment of the universe.

Specific outline:

Ye Wenjie used the sun as a megaphone to send a signal to the universe, which was received by a three-person man. Three-body people are aliens because their home planet has three suns. For some reason, these three suns are unstable and easy to collapse. Three people are preparing for interstellar migration, but the universe is so big that at first glance, it is dark everywhere, and I don't know where to immigrate.

So the three-body got thousands of space stations to monitor the signal and see if there is any signal to connect. Because the signal sent by Ye Wenjie was received by Santi, Santi planned to invade the earth, which led to the life-and-death struggle between human civilization and Santi civilization and the rise and fall of the two civilizations in the universe.

The meaning behind the three-body

Liu's Three-body tells people that to be or not to be is always our own problem. Ye in the book pinned the future of human civilization on Santi people, hoping to "create a brand-new, bright and perfect human civilization" through the power of this higher civilization. However, the threesome didn't intend to care about human civilization at all. All they want is the "perfect world" of the earth.

The scariest conjecture about alien civilization. It is possible that only human beings are intelligent creatures in the vast universe, and there are several galaxies similar to the Milky Way. The reason why we didn't find aliens is more likely that all intelligent civilizations remain silent and don't contact with other civilizations.