"Your extreme sports club, what does it do? Is it a biker gang?"

"Uh, what you're talking about isn't considered an extreme sport. The main categories of extreme sports include military, outdoor adventure, hunting, and powered flight. My club is mainly focused on military and powered flight activities."

"Sounds high-end, what exactly do you play?"

"The military category includes live ammunition shooting, tank driving, and fighter jet flying, while the powered flight category includes paragliding, high-altitude skydiving, manned balloons, and wingsuit flying."

"These are for rich people, right? How does a student like Lu Junchen afford extreme sports?"

"It's not as expensive as you think. The high-end projects of the club range from 100,000 to 500,000 per person per time. Lu Junchen's family is well-off, and the flight projects he plays aren't that expensive. For example, wingsuit flying and manned balloons only cost about 30,000 to 40,000 per session."

I thought about my own salary and ended this topic in a bit of a huff.

"Why go to Shen Guochang's house? What kind of grudge do you have with them?"

Chen Jiafei looked up in confusion, stared into my eyes, and after a moment, he laughed silently.

"It seems you really don't know. The person in charge of the 927 case doesn't even know what happened in the 926 case?"

"926 is... is 927. Just answer the question, what were you doing at Shen Guochang's house?"

"First of all, I didn't know it was Shen Guochang's house. I was just going for a hike in the countryside. Secondly, since you're in charge of the 927 case, you must understand the 926 case from two years ago because it might be connected."

I glanced at Sun Lili, who avoided my gaze.

"Alright, tell me what you know about the 926 case." I looked a bit uneasy as I glanced at the surveillance camera.

Chen Jiafei looked straight at me and then nodded: "I only know the first half, and it's not complete."

Chen Jiafei had an older sister, Chen Jiayi, a music teacher, who had a child out of wedlock and was living with her daughter Chen Xiaoya. Two years ago, Chen Jiayi brought Xiaoya back from the provincial capital to live in Binhai City where her parents resided. Unexpectedly, the familiar Binhai City became a living hell for the mother and daughter.

Xiaoya was attending Class 707 at the Nineteenth Middle School at the time, she was pretty, obedient, and did well in her studies, dubbed the "child of others" by parents. September 17, 2016, was a fine and sunny day, but it became Chen Xiaoya's everlasting nightmare. On that day, her grandmother fell and got hurt while picking her up, and when Chen Jiayi hurriedly arrived at the school gate, she couldn't find Xiaoya. Because, 40 minutes earlier, Xiaoya had been forcibly dragged into an electric tricycle by five 13-year-old boys: Zhao Dabao, Xiao Delong, Xiao Dehu, Shen Guochang, and Cai Yifan, and taken to Zhao Dabao's house. According to Zhao Dabao, they only found Xiaoya pretty and wanted to tease her, but after closing the door, an evil fire slowly ignited under the five of them.

In that chaotic house, Xiaoya's carefree days completely ended, as she endured two hours of extreme darkness. When the boys were done, they kicked her out of the room. With great effort, Xiaoya walked back home where Chen Jiayi couldn't even recognize her daughter—bruised and swollen face, eyes full of blood, disheveled clothes, bleeding from her lower body, lifeless gaze, and missing teeth.

The police quickly apprehended the five boys but since they were all under 14 and thus not criminally responsible, the officers sternly reprimanded them, ordering their parents to strictly supervise them, and compensated Chen Jiayi with medical and lost wages fees totaling 9021 yuan.

Listening, I clenched my fists. Next to me, Sun Lili's face turned pale with anger, trembling as she said, "Too cruel, these little monsters!"

"Cruel?" Chen Jiafei laughed, "If it could end like that, how nice would it be..."

On the day of the parents' meeting, the "Five Brats" reluctantly apologized while shaking their heads and rolling their eyes after repeated urging from the police. In a burst of rage, Chen Jiafei kicked the "Five Brats" a few times, and Chen Jiayi couldn't contain herself and slapped Zhao Dabao hard. Unexpectedly, this slap cost her life.

"We investigated what happened next for a long time without success. Could Captain Cao tell us?"

"Kexin? What's Lin Kexin's relationship with you all?"

"Kexin is Jiayi's best friend."

I finally understood Lin Kexin's unusual behavior lately.

At this point, Sun Lili wiped the corner of her eye: "I'll tell the rest, I was there on the day of the incident."

Chen Jiafei and I both turned our heads, looking at Sun Lili in surprise.