Anyone from kuo chuan presbyterian remember an episode of mass hysteria back in 2000s? Reading on the recent malaysia mass hysteria case reminded me of an incident happened at Kuo Chuan Presbyterian High School. if i remember correctly, many students(mostly girls i think) from a class(ground floor) got an image of a female ghost when they closed their eyes. it caused them unable to study and somewhat hysteria about it. the rumors of it spread like wildfire and caused unrest among the school.