Since the title mentions 'rich boys', they are likely to be the main characters. There may also be other supporting characters like their friends, family members who might visit the island, or locals on the island with whom they interact. Maybe there's a caretaker on the island property they stay at, or a girl who catches their eye and becomes an important part of the story.
The main characters are presumably the rich boys. However, in a novel like this, there could be other significant characters as well. For example, there might be an older mentor - like figure who tries to guide the boys during their summer on the island. There could also be a group of local kids who befriend or oppose the rich boys, adding some conflict and depth to the story. And of course, there could be female characters, whether they are love interests or just friends, who play important roles in the boys' summer adventures on the island.
The best chapter pointer here is Chapter 166, "Daniu Gets Jealous!". It opens with Only after everyone in the small courtyard had left, did Zhao Lang stride... and closes on However, after interviewing the villagers, no one has gone missing, so we....
Chapter 167 is the strongest chapter-level answer because it starts from By the experimental field, Qi Tianyu was quite helpless as he watched Wen... and follows through on Even when getting into the car, Qi Tianyu was still savoring the moment in....
Chapter 179 is the strongest chapter-level answer because it starts from Everyone originally had no expectations for the gifts that Su Yinwan... and follows through on I've been craving one for a long time!" Fans: ?.
A practical answer is Chapter 167, because it turns the idea into a concrete scene. The chapter opens with By the experimental field, Qi Tianyu was quite helpless as he watched Wen..., adds pressure through I'm not familiar with the others;
Chapter 169 is the strongest chapter-level answer because it starts from Everyone: "What?!" Seeing the shocked and bewildered expressions on their... and follows through on Wen Jiaojiao, as if to prove herself to Jiang Li, rolled up her sleeves....
If you want the clearest chapter reference, go to Chapter 192. Early on, Jiang Shixu had never imagined that Jiang Cheng, who had been so arrogant...; later, the chapter leans on On the other end of the phone, Jiang Li was also silent for a moment....
A practical answer is Chapter 186, because it turns the idea into a concrete scene. The chapter opens with Seeing Wen Jiaojiao bravely entering the pigsty, Jiang Yan couldn't stay..., adds pressure through Thinking this, he subconsciously looked towards the front of the crowd..., and ends on And.
A practical answer is Chapter 163, because it turns the idea into a concrete scene. The chapter opens with Su Yinwan entered a small room, guided by a staff member., adds pressure through Shang Shaojing slightly clenched his fists, his expression growing even..., and ends on Moreover, by doing so.
A practical answer is Chapter 174, because it turns the idea into a concrete scene. The chapter opens with Does Young Master Jiang really care why I would come here?, adds pressure through My clothes were soaked, and I was too uncomfortable if I didn't change., and ends on She knows the camera is.