New to 3 Body Problem? Here's what you need to know about the ...

Undeterred, Ye Wenjie tells them to come anyway: after her experiences with the Cultural Revolution, she believes that humans are incapable of making the world a better place by themselves. Aided by an American called Mike Evans, she sets up the Earth-Trisolaris Organisation: essentially, it’s a doomsday cult, designed to prepare humanity for the eventual alien invasion (450 years down the line, which is how long it’s going to take them to travel to Earth from their corner of the universe).