3 Body Problem

The trilogy is known as “Remembrance of Earth’s Past”. The individual books are as follows:

1. **The Three-Body Problem:** The first book of the trilogy introduces the reader to an alternate history where first contact with an alien civilization, the Trisolarans, takes place against the backdrop of China’s Cultural Revolution.

2. **The Dark Forest:** The second book develops the storyline revolving around the impending Trisolaran invasion, unveiling Liu Cixin’s unique take on the Fermi Paradox and the concept of “Cosmic Sociology”.

3. **Death’s End:** The final book of the trilogy spans a broad timeline, exploring deep time and the futures that await both the human and Trisolaran civilizations.

The Netflix Series centers around the “Oxford 5” who are headquartered in the US, whereas the Novels take place mostly in China and internationally. 

Sophons are high-dimensional, intellect particles created by the Trisolarans.

The first Sophon is a proton that the Trisolarans, a technologically advanced alien race, manipulate at the quantum level to unfold into two dimensions where they etch circuits that essentially transform the proton into an incredibly powerful quantum computer.

So while not referred to as AI, the Sophons are sentient, have self-awareness, can communicate, and carry out tasks which one can argue makes them a kind of advanced artificial intelligence system.

In the story, the Trisolarans use the Sophon to spy on humanity and disrupt our technological progress, mainly by creating chaos in the field of particle physics, making our progression towards a similar level of technology impossible. This introduction of the Sophon reinforces the themes of the trilogy around advanced civilizations, high-concept science, and the potential risks and benefits of technological progress.

Individuals tasked with designing strategic deterrents against an impending alien invasion. Wallfacers play a central role in humanity’s strategy against the Trisolarans.