Set against the backdrop of China's Cultural Revolution, a secret military project sends signals into space to establish contact with aliens. An alien civilization on the brink of destruction captures the signal and plans to invade Earth.

The story is set in China during the Cultural Revolution and follows the experiences of various characters as they confront the reality of an imminent alien invasion. The series explores themes such as the consequences of humanity's actions on a cosmic scale, the relationship between science and society, and the limits of human knowledge.

With its intricate plot, complex characters, and philosophical musings, The Three-Body Problem series has become a popular and critically acclaimed work of science fiction, winning numerous awards and drawing praise from readers and critics alike.