According to the information, after this incident happened, his fellow villager Wang Ping stayed with him and comforted him. Later, there was no food or drink in the house. Wang Ping was gone for a while. He was alone and probably couldn't vent his pent-up emotions, so he chose to end his own life.

According to the 2013 National Health Statistics Yearbook, the suicide rate in cities was 0.0048% and in rural areas was 0.0086% in 2012, with the number of suicides between 80,000 and 90,000 in 2012. Of course, this number is decreasing year by year, with the number in 2010 being 1.3 times this number and twice this number ten years ago.

However, the problem is still quite serious, because the suicide rate among college students and other young people has remained high in recent years. The specific reasons are multifaceted.

Bai Song had previously worked on two suicide cases, such as Sun’s suicide to defraud insurance and Shi’s suicide…

…

"There are still some strange things about this case." On the way, everyone had nothing to do, so they started discussing the case, said Captain Qin.

"Well," Bai Song asked, "Team Qin, we've been walking for a day, do we have any clues to the source?"

"There are still no good clues. Geng Nan is still not cooperating. This thing is hard to check. It may not be a local product. After all, the biscuits are made very roughly. A production line can be built with tens of thousands of dollars." Qin said, "We still need to make a breakthrough from Geng Nan. However, as the investigation speeds up, it is only a matter of time."

"Captain Qin, there is something I can't figure out," Bai Song said bluntly, "You said, after Xiao Yue died, Geng Nan was a little panicked and scared, and Tang Tianyu committed suicide in pain, so why did her best friend who sold her weight loss biscuits suddenly become so calm?"

"Yes," Ren Xu also said, "Didn't they say that this situation could lead to the death penalty?"

"It's not as serious as you think," explained Captain Qin. "Although it caused a death, Jia Zhu was a bit silly. The existing evidence basically shows that she didn't fully understand the harm. And coincidentally, the weight loss cookies she sold to Xiao Yue were not profitable. Besides, she actively confessed and took the initiative to report her superior Geng Nan, which is considered meritorious service. In addition, it was a first-time offender with little subjective malice, so she won't be sentenced severely in the end."

Bai Song knew that what Captain Qin said was right, but how many years Jia Zhu was sentenced to had nothing to do with him. He still felt a little uneasy about considering this case as one of selling toxic and harmful food.

"Captain Bai," Director Fan said, seeing Bai Song frowning in the passenger seat, "If you have this suspicion, then investigate further. But it is also possible that Jia Zhu, whom you are talking about, has triggered a psychological mechanism of self-protection. Sometimes when people are suddenly faced with something they cannot accept, they become very selfish and want to protect themselves."

"Is there such a situation?" Bai Song looked puzzled. Is this also considered a stress response in psychology?

"It's hard to say. Human nature is very complicated," Director Fan said with a smile, "but this kind of self-protection usually won't last too long. If it continues for a long time, then there will be a problem."

Director Fan has been working in the department since the beginning of his career. I can’t say that he has much experience in handling cases, but his understanding of human nature is beyond Bai Song’s reach.

"Director Fan, I have indeed learned a lot from today's events, and I also know the questions I asked today. Thank you for coming here to help today." Bai Song said sincerely.

Although Director Fan is the director of the bureau office, this matter is not actually his job. Coming to help is definitely to give face to Captain Qin and Bai Song.

It is appropriate to thank someone in person.

Director Fan was sitting in the back row, and Bai Song couldn't see the smile on his face, but he still smiled and accepted Bai Song's thanks: "Let's talk about it. Outside, we are all a team, and inside, we can say whatever we want. Captain Bai, this matter today is not a big deal, don't worry too much."

"I will study more." Bai Song said.

In fact, he knew that if he were a police officer handling the case, he would inevitably be scolded, but he was a cadre, and no matter whether Captain Qin was there or not, he would not criticize cadres from other units casually.

…

After talking about the case for a while, Bai Song planned to go to the detention center to interrogate Jia Zhu again after returning to the unit.

Most detention centers are reluctant to conduct interrogations at night, but with the Qin Detachment here, it is not a difficult task.

…

11:30 pm, Jiuhe District Detention Center.

"Officer, what... do you want to talk to me about?" Jia Zhu had just fallen asleep when he was brought out by the prison guard and taken to the interrogation room.

"Tang Tianyu committed suicide by jumping off a building." Bai Song said, "This afternoon."

Xiao Yue, Jia Zhu, Tang Tianyu, Wang Ping and another subordinate of Geng Nan, Chen Xiaoli, are all students of the same university.

Jia Zhu was already somewhat panicked and in a bad state, but when she heard this, she stared at Bai Song with a look of surprise: "He committed suicide?"

After saying this, Jia Zhu's expression became very strange, as if he had heard something particularly incredible: "Dead?"

"Yeah." Bai Song had been observing Jia Zhu's expression.

"This... little..." Jia Zhu hesitated for words and finally uttered one word: "It's what you deserve."

"Who are you talking about deserves it?" Bai Song asked.

"Tell me..." Jia Zhu paused for a few seconds and said, "Tell me about myself."

"Jia Zhu, do you know that it was the things you sold that killed Xiao Yue? Your life is basically ruined because of this." Bai Song said directly, trying to provoke Jia Zhu.

"It wasn't me who killed Xiaoyue, it was the person who committed suicide out of fear of punishment. As for the diet biscuits, if I didn't give them to Xiaoyue, she would find someone else to buy them. I'm not the only one selling them among my classmates," Jia Zhu said. "Besides, I only bought them for Xiaoyue, I didn't seek any profit at all."

"What makes you so rational now and not mind the death of your best friend at all?" Bai Song said it very directly. Jia Zhu was too calm, so calm that it was difficult to understand.

Jia Zhu never thought that Bai Song would ask this. Bai Song clearly felt that her emotions were fluctuating greatly. It could be seen that she was not really that calm, but she was very conflicted.

Bai Song has come into contact with many smart people, whether it is Wang Qianyi, Deng Wenxi, or Feng Yiling, in terms of IQ or EQ, they are all at a very high level.

If someone said that someone was smarter than Bai Song, he would be willing to believe it, after all, he knew that he was still very young. But if a student who had just graduated could keep Bai Song in social experience and speech, he must be a genius.

Bai Song could feel that Jia Zhu's current situation was that she seemed to acknowledge that what she was doing was the right thing!