The title refers to a classical physics problem involving the motion of three bodies in space under gravitational forces, which serves as both a literal plot point and a metaphor for the complex relationships between civilizations in the story.

While the series incorporates complex scientific concepts, Liu presents them in an accessible way that enhances the story without requiring advanced scientific knowledge. The human elements of the story remain central and relatable.

The series brings a distinct Chinese perspective to science fiction, incorporating elements of Chinese history and culture while presenting a uniquely global view of humanity's future. Its approach to alien contact and civilization survival differs significantly from traditional Western first-contact narratives.