It’s the end of the world, and they really think they know it. More than 500 people were detained in China Tuesday for spreading rumors that the world is about to end. The doomsday enthusiasts reportedly belong to a fringe Christian group called Almighty God, and sometimes go by the name Eastern Lightning. Police seized pamphlets, video discs, books, and other materials as they made arrests across eight provinces. Famously, the group— labeled a cult by state media—also believes that Jesus reappeared as a woman in central China.