China's forensic DNA technology had been in use for 30 years. According to Wu Nan's knowledge, there were nearly 600 DNA laboratories in China, and there should be more than 1,000 DNA sequencers. The total amount of data accumulated in the national public security DNA database was more than 40 million!
The DNA data of about 3% of China's population was stored in the public security DNA database, but there were almost no ordinary people among them. The targets of DNA data collection were special existences, such as abducted children, criminals, criminal suspects, and so on!
For example, although some unsolved cases were not finally solved, the police had collected the DNA of the suspect during the investigation of the case. Then, the DNA data of the suspect would appear in the national public security DNA database!
If this suspect was caught in another case many years later and the police collected his DNA, they would be able to find out that he was a murderer who had yet to solve an unsolved case!
Many unsolved cases were solved this way!
There was no hope at first, but the murderer was caught again...
……
Thirteen years ago.
On September 20, 2004, in Taicang City, Suzhou, someone found the incomplete body of a girl in the wasteland near Jincang Lake. After investigation by the public security bureau, the girl's name was Bao Ting. She was only ten years old and a fourth grade student of Taicang Second Primary School. She disappeared after school on September 15, 2004.
The forensic doctor had conducted a detailed autopsy on Bao Ting's body and confirmed that the time of death was around 11:00 p. m. on September 18th. Before her death, she had been sexually assaulted. There were 29 wounds all over her body. Her left hand and left foot were missing. A hard foreign object had been violently stuffed into her mouth. The cause of death was due to bleeding in her mouth, esophagus, and respiratory tract damage. She had difficulty breathing and died of suffocation...
On February 16, 2005, in Jinlang Town, Taicang, the cleaner found the body of a naked girl in the garbage bin when he was cleaning up the garbage in the morning. After investigation by the public security bureau, the girl's name was Li Yan. She was only six years old and had studied at Jinlang kindergarten before she died. She disappeared in front of her grandmother's house on February 13.
After the forensic examination, Li Yan died at around 5 o'clock in the morning on February 14th. The cause of death was that she was strangled to death and had been sexually assaulted after her death...
On June 9, 2005, near Xincang Village, Taicang City, two children who were catching frogs by the river on the weekend accidentally found the body of a highly decomposed girl in the river…After investigation, the girl's name was Wang Jie. She was only 12 years old. On May 11, 2005, she disappeared on the way to the afternoon call after school…
July 4, 2005, Taicang City Dongting South Road was repairing the underground cable. The excavator accidentally dug up a woven bag containing the body of a girl...
……
……
From September 2004 to April 2007, there were nine cases of missing girls being killed in Taicang City and its surrounding villages. The youngest girl was only six years old, and the oldest was only twelve years old. Six of them were raped while they were alive, and one was raped.
Although the cases were different, after DNA comparison and cross-comparison of other clues, the Taicang City Police Station confirmed that the nine cases were committed by the same person. They then reported it to the Jiangsu Province Public Security Bureau and then to the Ministry of Public Security.
At the beginning of April 2007, Taicang raped and maimed a girl, and a series of murder cases became a case under the supervision of the Ministry of Public Security.
On May 15, 2007, the Ministry of Public Security organized experts to conduct a consultation on this series of cases. Nine cases of rape and maiming of girls were combined into one case, and it was determined to be the "May 15" series of rape and murder cases in Taicang!
The case was extremely serious. The murderer specifically targeted girls. His methods were extremely cruel and he was highly concealed, causing great social panic.
In order to solve the case, under the supervision of the Ministry of Public Security, the Jiangsu Province police mobilized a large amount of manpower and resources to conduct a large-scale investigation. They arrested more than 80 suspects and collected thousands of records, but in the end, they found nothing.
In early October 2007, the Jiangsu police released the details of the case to the outside world and offered a reward of 300,000 RMB for clues.
The case had never been solved!
Ten years had passed!
It was still the same.
The Taicang 515 series of rape, murder, and maiming of a young girl case had already been hailed as one of the top ten unsolved cases in China's new century!
In Taicang, the influence of this case continued until today.
*****
River Viewing Garden, Unit 1, Room 601.
In the small bedroom, Wu Nan put down his cracked phone and quickly opened the computer's webpage. He entered a search-Taicang Case!
He only needed to search for these three words, and the encyclopedia entry that Wu Nan needed would directly appear.
It was the Taicang 515 series of rape, murder, and maiming of a girl case, which could also be referred to as the Taicang series of rape and murder of a girl case!
He had just received a call from Zhao Chenglong. As soon as the DNA comparison results of the girl's body came out, Zhao Chenglong called Wu Nan. This was the result of Wu Nan's constant harassment for the past two days. He called every day, morning, and afternoon. Occasionally, he would discuss the case with Zhao Chenglong on the phone!
Wu Nan did not dare to disturb his sister frequently. He would be beaten up, so he could only trouble Old Zhao!
At present, Wu Nan already knew that the victim was Luo Tiantian from the 630 Missing Person Case!
He also found out that the DNA extracted from the semen stain was the same person who raped and killed Luo Tiantian. It was the same person who raped and killed the girl in the 515 series of cases in Taicang ten years ago!
That was why Wu Nan wanted to investigate the Taicang Case!
The result really shocked him!
This case…was huge, too big!!
It was one of the top ten unsolved cases in the New Era. The murderer had committed a series of crimes more than ten years ago. After three years, he disappeared. It had been ten years, and the murderer was no longer in Taicang, but in the Demon Sea. What was this? Coming back to the martial world?
Wu Nan looked at the Baidu encyclopedia of the Taicang case.
It was written in detail, and it was the case that the police had announced back then.
Wu Nan looked at it for a long time.
He could not remain calm!
After reading the encyclopedia seriously, he continued to search on the web page. He entered keywords and searched for relevant news. He saw news reports from ten years ago and saw netizens analyzing the case on the forum...
The impact of this case was really huge!
However, after reading the analysis of some netizens in the past, Wu Nan realized that it was useless. On the contrary, it would affect his train of thought. This was because they had almost begun to make up stories. They even made up the murderer's childhood experiences, saying how many tragic things the murderer had experienced in the same year that made him so twisted!
He couldn't expect to find anything useful on the Internet unless the murderer also pretended to be a netizen and participated in the discussion of the case. That way, he might leave some clues.
He still had to look at the file!
Luo Tiantian's case would definitely be investigated together with the Taicang 515 case!
What Wu Nan wanted to see the most now was the case file of the 515 case in Taicang!
However, it was estimated that the Devil Sea had just received the DNA comparison results and had only contacted Jiangsu. The file would definitely not be available for the time being!
But Wu Nan still couldn't control himself.
He looked at the time on his computer. It was only one o'clock in the afternoon.
Wu Nan got up and started to pack.
He wanted to go to the police station!
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