Event Description
After the Doomsday Battle, humanity plunged into unprecedented despair. The space fleet was nearly annihilated, Droplets blockaded the sun, and humanity lost the ability to transmit signals to the universe. The Trisolaran fleet continued its advance toward the solar system, and humanity appeared to have reached its end.
At this darkest moment, Luo Ji — the Wallfacer everyone had considered the most incompetent — revealed his ultimate plan. He had previously used the sun to broadcast the coordinates of a star (187J3X1) to the universe, and that star had been destroyed by unknown forces in the cosmos, confirming the reality of the Dark Forest principle. In a graveyard, Luo Ji set up a dead man's switch system — if his vital signs disappeared, nuclear weapons would destroy a communication satellite array orbiting the sun, and the scattered debris would form a specific pattern broadcasting the Trisolaran star system's coordinates to the universe. Facing the Trisolaran civilization, Luo Ji declared: either cease the attack, or face mutual destruction. The Trisolaran civilization was forced to yield — Droplets lifted the blockade, and the fleet decelerated. Subsequently, a more sophisticated gravitational wave broadcast system was established, Luo Ji formally became the Swordholder, and humanity and the Trisolaran civilization entered an era of peaceful coexistence based on the threat of mutual destruction.