Half an hour later, the laboratory results came out. The substance Tu Zhongxin found in the colon of the deceased was indeed a capsule made of resistant starch, and its structure had not been completely destroyed by fermentation.

Su Ping immediately picked up the walkie-talkie and relayed the discovery to the criminal police.

Although this discovery does not seem to have much practical significance and cannot be used as an important directional clue, it is still a huge breakthrough to determine the murderer's modus operandi.

At least, they have a relatively more specific understanding of the murderer - even though Su Ping and Tu Zhongxin both slapped Qi Yuan in the face, ordinary people really don't understand the common sense that resistant starch is not easily digested and destroyed.

I have studied in junior high school and returned to school, but many people have forgotten this knowledge point. They may feel enlightened when others mention it, but no one mentions it, so it is difficult to remember it.

It is even rarer to use it in a murder plan, such as using mosquito coils and cigarette butts to create a simple delay device. The principle is very simple, but few can think of it and put it into practice.

Therefore, Su Ping quickly held a walkie-talkie meeting and asked the investigation team to add a condition when screening targets - at least one person in the suspect group must be thoughtful, flexible and knowledgeable. People, and can be roughly screened and judged based on the suspect’s occupation.

Generally speaking, occupations that require a lot of repetitive, mechanical labor are relatively rigid in thinking. But jobs that are relatively free and flexible will also be much more flexible in this regard.

After what happened last night, he returned to his office, and Qi Yuan still followed him.

Su Ping raised his head and glanced at him, sighed softly, then shook his head and said softly: "No wonder no matter how we discussed it before, the logic was difficult to reconcile. It turned out to be because we speculated in the wrong direction from the beginning."

"Yes." Qi Yuan sat opposite Su Ping and also said, "Who would have thought that they didn't intend to let Cao Mingyang go at all, but to further anger us..."

Su Ping was startled for a moment, then asked: "Tell me, what is the purpose of these guys designing this? To provoke us? To anger us?"

"If this is the motive, then he has a deep hatred for us." Qi Yuan turned away and looked out the window.

At this moment, Xun Mu suddenly ran into Su Ping's office and said excitedly: "Old Su, maybe our previous investigation was in the wrong direction. The target of the murderer is probably not Chu Xunliang and my brother-in-law, but ' police'.

The two of them were just unlucky and were kidnapped by the murderer, but at that time and in that place, no matter who they met, as long as they were wearing police uniforms, they would probably be captured and killed."

Su Ping raised his eyebrows: "Have you been eavesdropping outside?"

"What does eavesdropping mean?" Xun Mu rolled his eyes: "I want to know why eavesdropping is necessary?"

"Let's not talk about it for now." Su Ping stood up, walked to the bed, opened the window, then pulled off his mask, lit a cigarette, turned his back to the two of them, and asked: "I want to ask you a question. Your cousin is leaving. Married, right?"

"Well, that's right." Xun Mu nodded lightly, and agreed directly without denying it.

"The reason for divorce was domestic violence?"

"Yes," Xun Mu walked to another window, also pulled off his mask, lit a cigarette, and said, "It happened more than ten or twenty years ago. I don't remember the specific time very clearly. I had just graduated from school at that time. You have been working as a police officer for three or four years and have gone to a grassroots police station to gain experience. You know this."

"Tell me more specifically?"

"There's nothing to say." Xun Mu shook his head and said, "As for the matter itself, I'm quite impressed.

I was working the night shift at the time, and suddenly I received a call from my sister, asking if it was inconvenient for me. She was still crying there. I immediately became anxious and asked her what was wrong, and then told her that I was at the police station and asked her to come over - she

I didn't live very far at that time, so I took a taxi and came here.

When I arrived at the police station, I saw that her face was covered with bruises, the corner of her mouth was broken, and one side of her face was swollen. I was so angry that I asked her what was going on and who had beaten her. She was crying.

Said he was brother-in-law.

I forced myself to calm down, asked a colleague to help file the case, and immediately rushed to my brother-in-law's house and arrested the bastard.

That was the first time I used my connections to find many people I could find, and then convicted him of intentional injury, and then persuaded my sister to divorce him. This is probably what happened."

Su Ping hummed, and then asked: "What happened next? Do you still have an impression of him? His name, height, body, and general appearance."

"I vaguely remember something." Xun Mu thought for a moment and said, "I'm not tall, maybe about 1.75 meters tall. I'm not strong either. I'm a bit cowardly. I can only bully and bully him."

If a woman who is not dominant behaves like this, she is a loser in my opinion."

Su Ping nodded and then asked, "Do you still remember your name?"

"I have to think about this... My name is... Wei. There seems to be a "hao" in the name, but I can't remember which one." Xun Mu said, then shrugged: "You can dig out the case files from that year and check.

Wouldn't that be great? My sister's name is Xun Jingchu, you can look for her according to the person involved."

"The workload is too heavy." Su Ping rolled his eyes: "Many of the case files from twenty years ago have not been entered into the electronic database. They cannot be searched using keywords. They can only be searched manually. Who knows how long it will take."

"But the court trial records, at least the criminal case files, have been electronically stored." Xun Mu said, "You might as well apply for colleagues over there to assist in the investigation."

"That's right." Su Ping put out the cigarette butt, exhaled the last puff of smoke, then put on the mask, nodded slightly and looked at Qi Yuan: "Xiao Qi, I'll leave this matter to you."

"Ah? Oh, okay!" Qi Yuan nodded quickly.

Su Ping looked at Xun Mu again and said softly: "Why, did you regain your senses and come out?"

Xun Mu did not answer directly and looked into the distance.

After a moment of silence, he said: "Yes, people were killed. Things have happened. Apart from being a little hard to accept and a little confused at the beginning, they slowly got over it. What's left is endless...

anger……"

"Yeah, angry." Su Ping hummed and said, "If you're not angry about killing someone in front of us, then you can just take off your police uniform and go home and be a rice bug."

Xun Mu didn't answer.

After a short while, he asked: "Why, do you suspect my cousin's ex-husband?"

"I discussed it with Xiao Qi." Su Ping said: "He thinks that although this person may have committed the crime, his motive is far-fetched. I think so too. But there are no clues around at the moment, so why not give it a try and try your luck.

"
Chapter completed!