Jiang Kexin agreed to help me find someone. I was about to explain the whole story to her while she was sober, but Ke Yingying stopped me. She was very cautious, or rather, she trusted no one. Ke Yingying made an excuse, saying we should talk at home, and that Lin Han would be relieved if I went home. On the way home, Ke Yingying found an excuse to send Shi Ying back.
Shi Ying was a bit unhappy, but Jiang Kexin also said that it was better for Shi Ying not to get involved in this matter, so she was forcibly sent home. Before that, she dropped us off near the courtyard house.
As we walked back together, Jiang Kexin was swaying without my support. As soon as I entered the courtyard, Tang Yi ran over, hugged me, and cried, "Daddy, I thought you were trapped in a black hole by a big monster again."
Hearing Tang Yi say this, I was helpless and could only dryly explain, "Daddy had something to do."
"What?"
I was suddenly stumped and looked at Lin Han for help. Lin Han secretly handed me a lollipop. I gave the lollipop to Tang Yi and said with a smile, "Daddy went to buy you a lollipop, but it was a bit far, so I came back late."
Seeing the lollipop, Tang Yi's face was full of disgust: "I don't want it. My teeth are not good. Grandma said eating candy is bad for my teeth. If Mom gives me candy, it's Mom's fault. If Dad gives me candy, it's also Dad's fault."
"Grandma?"
"I had a video call with my mom. Tomorrow, I'll take Tang Yi back to Xi'an to visit Grandma."
This application of psychological techniques by Jiang Kexin was Master Wang Ren's skill. It was quite different from what Master Wang Ren learned from old Mr. Wen De back then. The methods Jiang Kexin used were more scientific and modern.
"Can we create a criminal profile based solely on the three words 'Heart Eater'?"
"No, I'm not basing it on the words 'Heart Eater.' My criminal profiling is based on the scheme he set up."
"That miraculous?"
"Let's try it. I've never done this before, so this is the first time."
In fact, finding Jiang Kexin was like a shot in the dark. To put it bluntly, it was a last resort. However, the situation developed beyond my imagination. When Jiang Kexin said, "Let's try it," most people would think she lacked confidence if they didn't know her well. But the truth proved that this was just Jiang Kexin's modest way of speaking. Her low-key demeanor often led to high-profile results, accomplishing things that would make people's jaws drop.
"Murder and dismemberment, even if the perpetrator designed the whole thing with computer-like precision, it exposes one fact: this 'Heart Eater' belongs to the highly aggressive type."
"Murder and dismemberment was just a method, to better hide it in the freezer."
Hearing the word "freezer," Jiang Kexin was reminded of Hu Xiaoyu, who had been dismembered, and her face turned pained. Seeing Jiang Kexin's expression, I wanted to change the subject, but Jiang Kexin stopped me by raising her hand: "No need. Pain is sometimes a good medicine. It can stimulate humans' potential abilities."
"There are many ways to hide a corpse. The easiest is to hide it in the ceiling or in the bathroom. Since the body was going to be discovered sooner or later, where it was placed wasn't that important. Therefore, dismembering and hiding it in a freezer reveals the psychological characteristics of this 'Heart Eater'."
"And then?"
"Highly aggressive individuals generally have two different types of aggressive personalities: one is the 'lack of control' type, and the other is the 'excessive control' type. Among these two types, the 'lack of control' type rarely suppresses their violent behavior. Not only can they not suppress it, but their violent behavior becomes a habitual response pattern."
"You mean that the 'lack of control' type generally chooses violence to solve problems?"
"Correct. Criminals with this personality are emotionally unstable and often end up at the police station for minor altercations. Moreover, people with this personality are simpler in mind, so they are not suitable to be schemers. The 'Heart Eater' we are looking for is the second type, the 'excessive control' type of violent personality."
"If that's the case, when would the 'excessive control' type exhibit violent behavior?"
"Disappointment and provocation can also cause the 'excessive control' type of violent personality to lose control. Xiaoyu's murder should have happened under such circumstances. She knew my brother and respected him. Imagine how Xiaoyu felt when she discovered that my brother was the perpetrator. She must have been very disappointed. Xiaoyu, who usually wasn't good at managing her emotions, must have looked down on my brother's decision at that time, which completely enraged my brother, leading to her murder."
After speaking, Jiang Kexin ran her hands through her hair and lowered her head.