Rebirth 78, the beginning of the marriage was broken off by the female educated youth

In less than five minutes, Li Xiangnan brought Wang Defa and Song Zimo to the prison management area.

After going up to the second floor and arriving at the interrogation area, Wei Jingfei was smoking outside the innermost interrogation room. When he saw a few people coming, he hurried over to greet them.

"Advisor Li!"

Li Xiangnan stretched out his hand to suppress it and asked softly, "Have you caught the murderer?"

Wei Jingfei's voice immediately dropped. He nodded and whispered, "Over the past few days, Captain Guo and Dean Fei have questioned all 290 prison guards and support staff. They've identified 21 people who recently visited the solitary confinement area! They're also logistics staff who frequently work at the farm's granary! After a focused investigation, Hu Erliu is the most likely suspect!"

Nodding, Li Xiangnan calmly walked to the door of another observation room next to the interrogation room and looked inside through the glass.

Guo Qian and Wen Xianping were cooperating in interrogating Hu Erliu, and Fei Yiqing was standing in front of the glass watching.

In the interrogation room, an old man in his fifties with a crew cut and gray hair was sitting upright in an iron chair, talking to Guo Qian.

He was dressed very simply, with patches of varying degrees embroidered on his sleeves and collar.

What surprised Li Xiangnan was that Hu Erliu did not show any nervousness or fear, but was very stable instead.

This state of being interrogated, which was different from that of most suspects, made Li Xiangnan feel nervous.

A bad feeling suddenly came over me.

This person is most likely not the murderer!

"Have you found out about Hu Erliu's movements on the 25th?" Li Xiangnan asked with a frown, his eyes still fixed on Hu Erliu.

"Captain Guo is asking, this person was brought here this morning!" Wei Jingfei replied immediately.

"Advisor Li!"

Hearing some noise at the door, Chief Prosecutor Fei Yiqing, who had been observing the movements in the interrogation room, spotted Li Xiangnan and walked over to greet him.

"Dean Fei! What do you think of this Hu Erliu?"

Li Xiangnan did not rush into the interrogation room, nor did he rush to communicate with Guo Qian. Instead, he asked Fei Yiqing's opinion first. This was intentional.

He was the one who accompanied me when I went to the single-building prison building a few days ago.

After brainstorming and reconstructing the course of the poisoning case, Dean Fei must have formed his own picture of the murderer.

From a professional perspective, his perspective as the director of the procuratorate is of great reference value.

really!

After hearing Li Xiangnan's question, Fei Yiqing walked back, picked up his notebook from the table next to the tea cabinet, walked out the door, came to the corridor, and motioned Li Xiangnan and others to sit down.

He opened his notebook and found a space to write and draw.

Li Xiangnan noticed that there were a lot of words and various sketches before the paper he wrote on, which probably reflected his understanding and guess about the case. He looked up at Fei Yiqing inadvertently.

The director of the Yanjing City Procuratorate is only in his forties, but his temples are already gray and there are deep dark circles around his eyes, which are signs of not getting a good night's sleep for many years.

He bears the distinct symbol of the years of hard work of judicial personnel.

"Advisor Li, this is the single prison building we approached that day. There are sixteen of them..."

Fei Yiqing's words interrupted Li Xiangnan's observation. He looked down and saw that he had already drawn sixteen small houses on the paper with a pen. He nodded slightly.

"To the west is the prison building. This row of windows on the east side is the high-level prison ward's exhaust vents, fifteen meters apart, separated by a concrete and lawn space, leaving no room for anyone passing through! To the north is the playground for the ordinary prison ward, blocked off by a thick, breathable wire mesh fence..."

This was the basic scene when Li Xiangnan was recognized by An Youting that day.

What Li Xiangnan cared about was what Fei Yiqing wanted to express by drawing this floor plan.

Wang Defa and Song Zimo, including Wei Jingfei and the other police officers handling the case, all lowered their heads and followed Fei Yiqing's instructions to watch.

"Because this place is close to a high-ranking and important prison building, not everyone can enter this area! There are usually only about forty-six people who need to clean and maintain this area. They will carry out the work near the prison building!"

"I suggest pushing the 25th forward by a week, and focusing on checking everyone who entered this area during that week..."

Li Xiangnan nodded and asked, "Why only push it forward one week?"

"Because there was another heavy rain here on the 18th a week ago! According to your reasoning, if there was zinc phosphide rat poison on Shen Yujing's air vent at that time, then Shen Yujing must have been poisoned at that time!" Fei Yiqing's thinking was extremely clear.

"So that's how it is!" Song Zimo's eyes lit up, and he felt that Dean Fei Yiqing was also quite capable.

"Dean Fei is so thoughtful!"

Li Xiangnan knew about this rainstorm. He learned this detail in advance when he was chatting with Dr. Hao. When he heard Fei Yiqing mention it again, he had a concrete understanding of his ability to handle the case.

"After sorting through the forty-six people and excluding those who stayed briefly, the prison guards in the sentry tower confirmed that they had been active near the solitary confinement building for a long time. Only twenty-one people remain!"

Wang Defa asked doubtfully, "What about this Hu Erliu?"

Fei Yiqing tapped his pen near the cell block and explained, "Two days before the incident on the 23rd, in cell block 14, directly across from Shen Yujing's air vent, a biogas tank exploded. Hu Erliu was assigned to come here with the other four to repair it. A prison guard noticed him lingering near the air vent while smoking!"

Li Xiangnan narrowed his eyes, stared at the No. 14 prison building, frowned, and asked, "Is there a biogas tank in each prison building? Or is there only one in total?"

"Just this one!" Fei Yiqing replied.

"Then why is it built in front of prison building No. 14? Not No. 16 or No. 1? This location is neither in the front nor in the back?" Li Xiangnan immediately raised the question.

"Do you suspect someone deliberately sabotaged the biogas tank to give Hu Erliu access to Shen Yujing's exhaust vent?"

Li Xiangnan did not deny it, but he did not nod either.

Fei Yiqing looked at him, somewhat impressed by his constant vigilance, "Because prison buildings No. 15 and No. 16 were built a few years ago, but the biogas tank is from the past!"

"..." Li Xiangnan twitched his lips and said, "So that's the reason!"

It was approaching summer and the temperature was too high. This prison had been built for twenty years and the biogas tank had been there for many years. The design was not very reasonable and the cement did crack after being roasted at high temperatures.

Based on this speculation, Hu Erliu is indeed the most likely person to poison Shen Yujing.

But Li Xiangnan still had doubts.

Because of the direction of the criminal portrait, Hu Erliu, a man in his fifties, does not meet the characteristics of a high-IQ criminal.

Fei Yiqing noticed the solemn look on Li Xiangnan's face and asked intently, "Do you think Hu Erliu is not the murderer?"

"It's not likely, or it's hard to find evidence to convince me of the current trend!" Li Xiangnan stood up.

Squeak!

At this time, the door of the interrogation room opened, and Guo Qian and Wen Xianping came out from inside, both of them with solemn and surprised expressions.

"Captain Guo! What happened?" Li Xiangnan walked up to him and asked.

Guo Qian simply shook his head.

"The murderer is someone else!"

"..."

As soon as these words were spoken, Fei Yiqing, Wang Defa and Song Zimo all frowned.

Li Xiangnan grabbed his arm and asked, "Captain Guo, what's the matter? You're rarely so sure!"