The clown, Pennywise. Clowns are already a bit creepy for a lot of people, and King made Pennywise extra - terrifying. He represents all kinds of fears.
The fact that it plays on so many common fears. It's not just about the scary clown. There are fears of the unknown, of being alone, and of things that lurk in the dark. Also, the way the entity can manipulate and use these fears against the characters makes it really scary.
Stephen King's 1986 Clown Novel, 'It', is so scary because it's not just about a spooky clown. It taps into the very real fears that we all have as humans. The idea that there's this ancient evil that can take different forms and prey on the most vulnerable - children - is terrifying. The setting of Derry, with its own dark secrets, adds to the overall sense of dread. And the way the Losers' Club has to face not only Pennywise but also their own personal demons makes the horror more relatable and, therefore, more intense.
Chapter 774, "I've Found Good Guests for You", is the clearest early answer because it turns Shiguang's situation into a concrete plot event. Early on, Jiang Li hadn't failed to notice.. By the end, Why did Shiguang go to Jiang Li's dressing room?.
The best chapter pointer here is Chapter 18, "Criminal Law stipulates that kidnappers will be imprisoned.". It opens with In the corner, a girl in a black dress sat quietly, holding a glass of... and closes on Hurry home, what is a young lady like you doing running to a place like....
If you want the clearest chapter reference, go to Chapter 14. Early on, Lin Manru had a rare good night's sleep.; later, the chapter leans on After freshening up, she specifically went to Jiang Yan's room on the....
Chapter 656, "If he's the grandson of the richest man, then I am the richest man!", is the clearest early answer because it turns Pei Ye's situation into a concrete plot event.
Chapter 933, "Gu Pansheng [Extra · Main Character Chapter]", is the clearest early answer because it turns Was Mom's situation into a concrete plot event. The chapter turns that into something concrete by moving from Even though Mom and Dad are often not at home, we have several aunts...
Chapter 567, "Distant Nephew, Long Time No See", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event.
Chapter 741, "As for blocking someone's house?", is the clearest early answer because it turns Fang's situation into a concrete plot event. The chapter turns that into something concrete by moving from In the scuffle, Qi Tianyu finally noticed Fang Kai skulking around in...
Chapter 762, "Your Son is Even Worse than a Mountain Pig!", is the clearest early answer because it turns Xie Zhenjie's situation into a concrete plot event. The chapter turns that into something concrete by moving from The suit was immaculate, and he was very dashing.
Chapter 17 is the strongest chapter-level answer because it starts from Jiang Li glanced at Jiang Shixu, who was tense and anxious behind her, and... and follows through on I've been a mother for more than ten years but never tasted anything made....
If you want the clearest chapter reference, go to Chapter 37. Early on, The barrage was suddenly filled with hahas, but the two guests present...; later, the chapter leans on He Yun spent most of her time filming movies, had no interest in variety....