['< sod >\'\' death ’ s end\'\' focuses on cheng xin, a rocket scientist who entered hibernation in the crisis era and then is awoken repeatedly in different eras. following the events of\'\' the dark forest\'\', the trisolarans are held at bay by the threat of broadcast by luo ji. luo ji ’ s post is that of the " swordholder ", the person who can threaten the two worlds by revealing the trisolarans home world\'s location. following an election, luo ji\'s responsibilities are transferred to cheng xin, whom the trisolarans knew would be unable to release the broadcast message. the trisolarans destroy humankind ’ s large space fleet, as well as the gravitational broadcast stations. one space ship that escaped the destruction manages to transmit the location of trisolaris, and eventually their homeworld is destroyed in a dark forest attack. humanity spends centuries preparing for a similar attack, only to be destroyed in an attack that collapses the space of the solar system into 2 dimensions. a few humans escape, including cheng xin, in light - speed spacecraft. with the assistance of a trisolaran robot, they are able to enter another universe, only to return to the original universe. < eod > < sod >\'\' death ’ s end\'\' focuses on cheng xin, a rocket scientist who entered hibernation in the crisis era and then is awoken repeatedly in different eras. following the events of\'\' the dark forest\'\', the trisolarans are held at bay by the threat of broadcast by luo ji. luo ji ’ s post is that of the " swordholder ", the person who can threaten the two worlds by revealing the coordinates of trisolaris and earth. following an election, luo ji\'s responsibilities are transferred to cheng xin, whom the trisolarans knew would be unable to release the broadcast message. the trisolarans destroy humankind\'s large space fleet, as well as the gravitational broadcast stations. one space ship that escaped the destruction manages to transmit the location of trisolaris, and eventually their home world is destroyed in a dark forest attack. humanity spends centuries preparing for a similar attack, only to be destroyed in an attack that collapses the space of the solar system into 2 dimensions. a very few humans escape, including cheng xin, in light - speed spacecraft. with the assistance of a trisolaran robot, they are able to enter another universe, only to return to the original universe. < eod >']