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

When Li Xiangnan heard that Guo Qian and forensic doctor Wang had made important discoveries, his heart was also moved for a moment.

He walked quickly forward to the bottom of the window sill, looked up, and asked doubtfully, "Captain Guo, what do you mean?"

Guo Qian reached out and grabbed the rope woven from prison uniforms and sheets and said, "Advisor Li, look at the iron fence up there!"

Li Xiangnan narrowed his eyes and looked up in the direction of Guo Qian's finger, which was where the rope touched the iron bars of the window.

The structure of the cell here is similar to that of Shen Yujing's cell, with an air vent designed above the head at a height of one person.

The air vent has no windows, but there is a cement platform about half a meter wide outside to block rain and dust.

It was through this observation that Li Xiangnan saw what Guo Qian wanted him to pay attention to.

After a long period of oxidation, the iron fence will produce peeling bumps on the exposed parts of the steel bars, as if the iron fence has peeled off.

However, except for the smooth steel bar that was used to hang Xu Sheng, the other dozen or so steel bars still had a lot of protruding iron sheets on them.

The one with the hanging rope is noticeably different from the others.

"It's so clean!" Guo Qian said excitedly.

"That's right!" Li Xiangnan had already noticed a large amount of worn-off iron sheets on the windowsill. "This steel bar has been worn down recently. This is to prevent Xu Sheng from struggling. The raised iron sheet might rub against the rope and cause it to break, thus affecting the final suspension effect!"

Forensic Doctor Wang pulled Li Xiangnan up, and the three of them stood at the head of the bed to take a closer look.

He asserted, "It looks like it was sanded with sandpaper, so it should be at least 5000 grit!"

Li Xiangnan nodded. The larger the mesh number of the sandpaper, the more abrasive particles per square inch. The finer the particles, the smoother the polishing effect. There is a clear difference between the effects of 3000, 5000, and 7000!

"Captain Guo, where is that outside? The activity area? Remember to ask Lao Wei to check if anyone has stayed nearby recently. This is a key clue!" He quickly reminded.

"It should!"

After Guo Qian nodded, he called out to Xiaodan, took the evidence bag from him, and scraped some iron filings with tweezers and put them in.

Li Xiangnan jumped down again and looked towards the corner, "Old Wang, you here..."

"Look here!" Forensic Doctor Wang jumped down, squatted in the corner, and pointed at the crack in the cement floor. "If you don't pay attention, you won't notice it. There are some dark brown debris here!"

"What a veteran forensic doctor!" Li Xiangnan took the tweezers, carefully picked up the debris and sniffed it carefully. "It looks like the ashes of some burning plant, but..."

He sniffed several times and looked at Forensic Doctor Wang.

"It has a sweet smell! What we smelled before was the smell emitted by this thing!" Forensic Doctor Wang nodded.

Li Xiangnan hummed, put the debris into the evidence bag, and frowned.

Fireworks are strictly prohibited in prison. Fire sources are strictly controlled for ordinary prisoners and guards. This thing should not appear here.

"It's impossible to bring something of unknown origin into the prison! Strict entry and exit requirements and inspections are in place for both prisoners and guards. This is a direction for investigation."

Guo Qian nodded: "I will have someone investigate carefully!"

Several people exchanged glances and looked everywhere, but there were no valuable clues.

"I'll have Old Wang bring the body back to the team for an autopsy! Notify us immediately of the results!" Guo Qian immediately made arrangements. "The two of us will support each other in the prison and investigate the people here!"

Li Xiangnan didn't say much. This arrangement was the most reasonable one now.

While dissecting the body, they tried to find out the real cause of Xu Sheng's death.

While conducting surprise interrogations of prison guards and prisoners, the case was also advanced simultaneously.

A two-pronged approach achieves optimal efficiency.

"I'll be waiting for your news, Old Wang!" Li Xiangnan greeted Forensic Doctor Wang, who then brought his assistant, put Xu Sheng into a body bag, and began to carry him out.

Wei Jingfei had already begun questioning the guards who had been on duty the previous night, while Liu Yiming was contacting people to collect fingerprints from everyone. Li Xiangnan left the cell and saw Shi Yang pacing anxiously at the office door. He walked over and asked, "Superintendent Shi, District Chief Cheng hasn't arrived yet?"

Cheng Sanmin is the district chief of the serious criminal prison area. He has just received the list.

"Almost there!" Shi Yang checked his watch. "District Chief Cheng doesn't live far away. He'll be here in twenty minutes at most!"

"Okay!" Li Xiangnan nodded, "Please ask Supervisor Shi to take me to the library!"

"This way!" Shi Yang was a little surprised when he heard this.

Li Xiangnan pays so much attention to details when investigating cases that he will not let go of any clue in a book.

"Captain Guo, call Lao Duan and ask him to come here quickly!" Li Xiangnan whispered something to Guo Qian before going to the library.

"I understand!" Guo Qian immediately understood Li Xiangnan's intention and turned around and left without him saying anything.

Under the guidance of Shi Yang, Li Xiangnan asked Song Zimo, who was waiting at the gate of the prison area, to go to the library together.

It is now the half-hour entertainment time before lunch, and many people in the room are reading.

The prisoners sat in their seats, with many guards standing around them.

As soon as the two came in, the library administrator stood up nervously.

"Warden!"

"Consultant Li wants to check out the library, don't be nervous!" Shi Yang comforted his subordinates.

"Yes!"

Li Xiangnan walked around the room and asked the housekeeper standing by the bookshelf for information: "If I were a prisoner and wanted to read a book, could I read all the books here?"

"Sure!" the supervisor replied nervously.

"Then can I start writing notes in the book?" Li Xiangnan asked.

"You are only allowed to use pencils, and you can erase them at any time!" the supervisor replied.

"Are there many people writing here?" Li Xiangnan suddenly asked, "I don't see any prisoners holding pens."

"No prisoners usually take notes, so not many use pens. Except for those who write letters here!"

"Oh?" Li Xiangnan took these words to heart and looked around again. Sure enough, he saw a prisoner in the corner writing on a piece of letter paper with a pencil under the strict supervision of the guard.

He then asked, "What if I borrow a book to read outside?"

"It wasn't allowed before, but later, in order to strengthen the ideological education and transformation of prisoners, now you just need to register at the exit!"

"Okay!" Li Xiangnan came to the exit again and looked through the book borrowing records. After searching for a long time, he found that someone had borrowed the book "Examples of Child Psychology" two days ago, but the person who recorded it was Xu Sheng.

He looked up at the administrator and asked, "Has Xu Sheng ever borrowed books here?"

“…” As soon as this question was asked, Shi Yang immediately became nervous.

The librarian took a look at the record book and nodded, "Yes, he signed it, so it's him!"

"Are you sure?" Li Xiangnan asked with narrowed eyes.

"Of course..." The administrator answered subconsciously, but before he could finish his words, he saw his warden's face change. His heart skipped a beat and he suddenly became uneasy. "Is it him or is it him?"

Li Xiangnan laughed: "I borrowed books from you and signed my signature. You ask me?"

"Tell the truth!" Shi Yang shouted.

"He signed it himself!" the administrator immediately confirmed.

Shi Yang's face turned black.

"Do you know Xu Sheng?" Li Xiangnan suddenly asked.

"No...I don't know him!" The administrator shook his head in panic.

Shi Yang said with a green face: "Nonsense, Xu Sheng is a special prisoner, how could he come here to borrow books! He is under house arrest..."

"That's not him!" The administrator stood up suddenly and hunched his shoulders.

"Who borrowed it?" Shi Yang felt completely embarrassed.

Ten minutes ago, he had assured Li Xiangnan that the management staff here were well-trained and strictly inspected, but he was slapped in the face so quickly.

"I...I..." The administrator's face turned pale. "There are so many borrowers, I can't remember their faces. Supervisor Shi...I forgot, I really forgot!"

"Advisor Li!"

At this time, Wei Jingfei hurried into the library.

Li Xiangnan looked at the librarian and said coldly, "Please think about who borrowed this book as soon as possible! Also, I'll arrange for someone to copy this notebook right away. Don't move! I'll come over to question you at any time, so be prepared in advance!"

After saying this, he took a deep look at the embarrassed Shi Yang and walked towards Wei Jingfei, "What's wrong? Any progress?"

"Yeah!" Wei Jingfei nodded and pulled Li Xiangnan to a corner. "The prisoner next to Xu Sheng said that he heard someone talking in his cell last night..."

"Oh?"

Upon hearing this, Li Xiangnan immediately became alert and asked hurriedly, "Did you recognize the voices of several people?"