The Remembrance of Earth's Past

1967: Ye Wenjie witnesses Red Guards beat her father to death during China's Cultural Revolution. This singular event will shape not only the rest of her life but also the future of mankind. Four decades later, Beijing police ask nanotech engineer Wang Miao to infiltrate a secretive cabal of scientists after a spate of inexplicable suicides. Wang's investigation will lead him to a mysterious online game and immerse him in a virtual world ruled by the intractable and unpredictable interaction of its three suns.

Imagine the universe as a forest, patrolled by numberless and nameless predators. In this forest, stealth is survival – any civilisation that reveals its location is prey. Earth has. Now the predators are coming. Crossing light years, the Trisolarians will reach Earth in four centuries' time. But the sophons, their extra-dimensional agents and saboteurs, are already here. Only the individual human mind remains immune to their influence.

Half a century after the Doomsday Battle, the uneasy balance of Dark Forest Deterrence keeps the Trisolaran invaders at bay. Earth enjoys unprecedented prosperity due to the infusion of Trisolaran knowledge, and, with human science advancing and the Trisolarans adopting Earth culture, it seems that the two civilizations can coexist peacefully as equals, without the terrible threat of mutually assured annihilation. But peace has made humanity complacent.

At the end of the fourth year of the Crisis Era, Yun Tianming, riddled with cancer, chose to end his life. But death for Yun Tianming is merely the first step in a journey that will place him on the front line of a war that has raged since the beginning of time. As Yun Tianming lay dying, his brain was extracted from his body, flash frozen, put aboard a spacecraft and launched on a trajectory to intercept the Trisolarian First Fleet. It was a desperate plan. But there was an infinitesimal chance that one day Tianming may, somehow, send valuable information back to Earth.