What is the main principle expressed in the book Three-Body Problem?

What "The Three-Body Problem" ultimately wants to tell people: Even if fate is like this, we still have the right to resist. This resistance is our "destiny", and this resistance is worth our while. Give a lifetime. So death is not scary. What is scary is that we numbly accept this death and leave in a muddle.

If death is the inevitable fate of all things, then the existence of struggle from the time this thing comes to this world to the time it leaves this world is the most powerful resistance to this fate, even if we cannot stay in the end. No matter what, we still have to strive to create more now!

Introduction to "The Three-Body Problem"

Ye Wenjie used the sun as a loudspeaker to send a signal to the universe, which was received by a Trisolaran man. The said Three-Body Man is an alien. people. Because their home star has three suns. For some reason, these three suns are unstable and will collapse at every turn. The Trisolaran people are preparing to immigrate to the stars, but the universe is so big that at a glance, there is darkness everywhere. Not knowing where to move, Trisolaris set up thousands of space stations to monitor signals to see if there was any signal they could connect to.

Because the signal sent by Ye Wenjie was received by the Trisolarans, the Trisolarans planned to invade the earth, which led to a life-and-death struggle between human civilization and the Trisolaran civilization and the rise and fall of the two civilizations in the universe.