Well, it really depends on the specific novel. Different novels have different famous first lines. For example, 'It was the best of times, it was the worst of times' is a well-known one from 'A Tale of Two Cities'.
The famous first line of a novel can vary greatly. Take 'Call me Ishmael' from 'Moby-Dick' as an instance. But there are many others that have become iconic in their own right.
The determination of a famous first line of a novel is subjective. Some might consider 'All children, except one, grow up' from 'Peter Pan' as famous. It often depends on the popularity and cultural impact of the book.
Chapter 100, "Ominous, there might be a bloody disaster!", is the clearest early answer because it turns Animal World's situation into a concrete plot event. The chapter gives readers a real answer by opening on The barrage was about to die of laughter.
Chapter 187, "I Really Need an Apology", is the clearest early answer because it turns Miss Su's situation into a concrete plot event. A useful checkpoint is the way the scene starts with During the competition, she passed by him numerous times, unfazed by...
Chapter 348, "Schemes and Counter-Schemes, the Five of East Ridge, Zhu Yang's Threat, and the Dust Settles", is the clearest early answer because it turns Zhu Tong's situation into a concrete plot event. Early on, Leader Zhu, what a clever move!" Lu Yang seemed to finally come to.... By the end, Five days ago, Dean Gu was transferred to the Bai Mu District..
Chapter 341, "Whose Child Is Jiang Cheng Really?", is the clearest early answer because it turns Miss Jiang's situation into a concrete plot event. It opens with Wei Dong glanced at his wife who had followed closely behind and...
Chapter 37, "Major Changes in Xia City, the Wealthiest Person in Great Xia (Part 2)", is the clearest early answer because it pushes Hong Yu into a new phase or setting. It opens with Excluding the overlapping positions, the total is 153. and closes on Recent changes in Xia City are more than just this city wall." He....
Chapter 400, "Arriving at Yan City", is the clearest early answer because it pushes Jiang Ye into a new phase or setting. The chapter gives readers a real answer by opening on What Jiang Zhao Yuan didn't expect was that, once Jiang Lili and...
Chapter 346, "Elite Warriors, One vs Three, Reason Behind the Beast Tide [10,000-Word Chapter, Continued Tomorrow]", is the clearest early answer because the buildup finally cashes out in a real clash. The setup is Kill them!" As Xia Chuan's voice echoed, the six thousand soldiers of..., but the pressure keeps building through On the battlefield, roaring is naturally to boost one's own morale,....
Chapter 227, "There's Something Wrong with This Stepmother", is the clearest early answer because it turns Yin Stars's situation into a concrete plot event.
Chapter 332, "Chen Ying's New Discovery, Xia Yuning, Good News Abounds", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The setup is Li Xuanling was about to speak when Xia Hong's voice suddenly came..., but the pressure keeps building through It really is like having one's wishes fulfilled..