It refers to a physics problem involving the motion of three celestial bodies under mutual gravitational attraction, which is chaotic and unpredictable. In the story, the alien civilization Trisolaris lives in such a system.

She is an astrophysicist who, disillusioned by humanity during the Cultural Revolution, sends a message inviting the Trisolarans to conquer Earth, acting as the catalyst for the series.

A solution to the Fermi Paradox suggesting the universe is a dark forest where every civilization is a hunter. To survive, one must remain silent; if discovered, they will be eliminated by others.

Protons unfolded into lower dimensions by Trisolarans to create supercomputers. They are sent to Earth to halt scientific progress and spy on humanity.

Four individuals granted unlimited resources to develop secret strategies against Trisolaris, as Sophons cannot read human minds.

A small Trisolaran space probe made of strong interaction material. It is nearly indestructible and capable of destroying entire human fleets.

There are three books in the 'Remembrance of Earth's Past' trilogy: 'The Three-Body Problem', 'The Dark Forest', and 'Death's End'.

It is 'hard sci-fi', grounding its speculation in real physics (like the three-body problem, nanomaterials, and quantum entanglement), though it takes creative liberties.

The Tencent version is a faithful, slower-paced adaptation of the first book set in China. The Netflix version internationalizes the cast, speeds up the plot, and blends elements from all three books.

A message sent by Trisolarans to Earth via Sophons, intended to demoralize humanity by comparing their technological inferiority to that of insects.