In this sequel to The Three-Body Problem, humanity faces an existential threat: the Trisolaran fleet, en route to conquer Earth in four centuries. Unable to hide their strategies from alien sophons that monitor every human communication, the United Nations launches the Wallfacer Project—selecting individuals tasked with devising secret plans known only to themselves. Reluctant astronomer Luo Ji emerges as humanity's unlikely savior when he uncovers the terrifying truth of cosmic civilization: the universe is a dark forest where every exposed world invites destruction. A stunning exploration of survival, strategy, and the chilling logic of first contact.
