The Three-Body Problem (Chinese: 三体; lit. 'Three-Body') is a science fiction novel written by the Chinese writer Liu Cixin. The title refers to the three-body problem in orbital mechanics. It is the first novel of the Remembrance of Earth's Past (Chinese: 地球往事) trilogy, but the whole series is often referred to as Three-Body. The trilogy's second and third novels are The Dark Forest and Death's End, respectively.
The first volume of The Three-Body Problem was originally serialized in Science Fiction World in 2006 and published as a standalone book in 2008, becoming one of the most successful Chinese science fiction novels of the last two decades. The novel received the Chinese Science Fiction Yinhe ("Galaxy") Award in 2006 along with many more over the years. By 2015, a Chinese film adaptation of the same name was in production.

The English translation by Ken Liu was published by Tor Books in 2014. Thereafter, it became the first Asian novel ever to win a Hugo Award for Best Novel, and was nominated for the Nebula Award for Best Novel.

The series portrays a fictional past, present and future where, in the first book, Earth encounters an alien civilization in a nearby star system that consists of three solar-type stars orbiting each other in an unstable three-body system.
tell me about the three body problem novel
Three body problem is a breaking through science friction book written by Cixin Liu，a chinese novelist. The book has a macro imagination and profound perspective about human beings, society , nature and the entire universe. It is considered the number one science fiction book in China.