Serious Crime Unit 1

Chapter 1270 Forgery (10)
"The person that Mr. Wang relies on the most is the security manager Rong Liuxu. He was originally a policeman in Binhe City. Later, he was fired for making mistakes, so Wang Hui invited him to come to the company as a manager. Rong Liuxu has a very high IQ and is very talented. I am good at martial arts, bold and careful in doing things, always speak my mind, and very loyal. Of course, he looks down on me. He also criticized me for being addicted to games all day long and having no plans or ideals in life. But I feel like being a kind and ordinary person The people are also very nice.”

After Wu Jiang thanked Cheng Jin, he and Xiao Ke returned to the team and reported the situation to Jiang Yiming.Jiang Yiming targeted Rong Liuxu and asked the surveillance team to search for Rong Liuxu in the surveillance videos of 18 buildings in Huayu Community.

However, the visual investigation team checked the surveillance video for two days and found no trace of Rong Liuxu.Lu Yingying suspected that Rong Liuxu might have hidden in the cleaner's garbage truck, came to the crime scene, and killed Ruan Longxiong.After he killed Ruan Longxiong, he thought of a special way to leave the scene.Jiang Yiming agreed with her idea. Rong Liuxu had been a security policeman and his criminal IQ must be very high, so it would be difficult to find his flaws.

At this time, Wen Xiaorou came to the office to report the situation to Jiang Yiming: "Team Jiang, I have assembled all the parts of Cheng Cheng's mobile phone. I used the software to check the mobile phone and found that the mobile phone was broken at 8:25:00 on August 32. There is a difference of 10 minute and 1 seconds between the time when Cheng Cheng’s watch broke, which means that the phone was thrown from upstairs after Cheng Cheng fell to the ground.”

"Great, the fox's tail is almost exposed. Have you found any valuable clues on your phone?"

"I checked the phone with a magnifying glass. The pieced together screen and back only contained Cheng Cheng's fingerprints. However, the back of the phone was stained with traces of liquid. Because it was light yellow, I suspected it was tea stains."

"Even if it's tea stains, it's useless to us in solving the case, right?" Xiao Ke said.

"Not necessarily. We can extract the tea stains and take them to the laboratory to test the ingredients of the tea stains to see what kind of tea it is. If it is not from the tea that Cheng Cheng often drinks, then it is most likely that it is from the tea that Cheng Cheng often drinks. It was left behind by the tea that the murderer often drank. I also made another important discovery. The record on Cheng Cheng’s WeChat sports applet shows that his mobile phone started moving at 25:00:22 on the 22th, and stopped after moving only 16 meters.”

"Can you find out the specific location?"

"No, I only know that it's inside the Huachen Building."

"I think what happened is like this: the murderer tricked Cheng Cheng into going to the rooftop of Brilliance Building, and Cheng Cheng put his cell phone in the office. After seeing Cheng Cheng go to the rooftop, the murderer stole Cheng Cheng's cell phone and then used it to make calls. After calling Pei Shaohong, he went to the rooftop, pushed Cheng Cheng downstairs, returned to the 18th floor, and threw the phone next to Cheng Cheng's body from the 18th floor," Jiang Yiming said.

"But we didn't find anyone on the rooftop in the surveillance video."

"It's very simple. The murderer used a rope to climb to the rooftop from the 18th floor, and then pushed Cheng Cheng downstairs. After completing the murder mission, he followed the rope back to his office. This person is most likely Rong Liuxu. , because Rong Liuxu's office is diagonally opposite to Cheng Cheng's office. They were the only two working overtime in the office that day. Although there were 18 people working overtime in the office area, they would not notice that Rong Liuxu went to Cheng Cheng's office to steal the mobile phone. " Xiao K said.

"But how did Rong Liuxu untie the rope tied to the rooftop railing?" Luo Jin didn't quite understand.

"Isn't this easy? Buy an iron claw with cornices, throw it on the rooftop, catch it on the railing, and then release your hand after use, or press a button, and the claw will automatically release. From the movie "Mission: Impossible" Tom Cruise often uses this flying claw to fly over walls and walls." Xiao Ke replied. "Only Rong Liuxu has the ability to fly over walls and climb over walls. Cheng Cheng is a very strict person and has a mysophobia. He probably won't tolerate his white mobile phone being stained with tea stains. If it is accidentally stained, he will definitely Wash away the tea stains. I think Eiruo put the mobile phone on his tea tray and got the tea stains," Wu Jiang said.

"Give me your phone and I'll take it for testing to see where the tea stains came from." Luo Jin stretched out his hand and asked Wen Xiaorou for his phone.

She handed the phone to Luo Jin, and then said to Jiang Yiming, "I suggest that we search Rong Liuxu's office and residence as soon as possible, and ask him where Ruan Longxiong was when he died."

Jiang Yiming believes that it is too early to apply for a search of Rong Liuxu's office and residence. After all, it is only speculation at the moment and there is no evidence to prove that Rong Liuxu is suspected of murder.In the end, Jiang Yiming decided to ask Lu Yingying and Wen Xiaorou to check the cleaner on the 18th floor of Huayu Community to see if she had taken Rong Liuxu's money and asked her to use a garbage truck to transport Rong Liuxu to the 18th floor, and of course to any floor. All is OK. Rong Liuxu can walk from the stairs to kill Ruan Longxiong because there are no monitors installed on the stairs of Building 18.

Jiang Yiming asked Wu Jiang and Xiao Ke to go to the rooftop of Huachen Building to inspect the railings.This is what he thought: If Rong Liuxu used a rope or iron claws to climb to the rooftop from the 18th floor and push Cheng Cheng down from the rooftop, the friction between the rope and the marble railing would definitely leave trace particles of the rope, even if he got off the rooftop. Even the rain cannot wash it away.

If Eiryusu hooks the balcony with iron claws, the iron claws will rub against the railings. Then the iron claws will definitely wear away the railings, and at the same time, trace particles of the iron claws will be left behind. This is Roca's law. No one knows Unavoidable.

Rocca's law, also known as Rocca's exchange law, was created by French forensic scientist and criminologist Edmond Rocca. Its theory is that "whenever two objects come into contact, a transfer phenomenon will occur." It is used at crime scenes. During the investigation, the suspect will inevitably take something away and leave something behind.That is to say, tiny physical evidence will be left at the scene.

There are only 18 independent offices on the 8th floor of Huaxing Network Company. They are located on both sides of the corridor in the office area, with four offices on the left and right. At the time of the incident, only Cheng Cheng’s Rong Liuxu was working overtime, and Rong Liuxu’s office window was on the upper left side of the office window. Fangzheng was the starting point of Cheng Cheng's fall, and the distance between them was only 4.5 meters, so it was very easy for Rong Liuxu to quietly climb up to the rooftop and push Cheng Cheng down the stairs.

The starting point of Cheng Cheng's fall is at right angles to Rong Liuxu's office. The railing facing the office is only 4 meters long. They only need to survey the railing at the starting point of Cheng Cheng's fall, because the rope or iron claw must be hung on this side. on the railing.Wu Jiang and Xiao Ke took magnifying glasses and multi-band light sources to inspect the rooftop railings.

Multi-band light source can detect: biological stains and faint fingerprints at crime scenes, blood and other body fluids, scratches, bites, marks, models, hair, grease, trace metal particles and other petrochemical pollution, etc., and can find 100 micron Physical evidence, so no matter how the criminal cleans the scene, he cannot remove the micron-level physical evidence.However, 100-micron physical evidence will not be extracted from general investigation sites, because that would be too much work, and some 100-micron physical evidence is not exclusive.

Jiang Yiming and Zhou Ting went to ask Rong Liuxu. When they walked into Rong Liuxu's office, he enthusiastically stepped forward to shake hands with them, saying that he admired them very much, and then invited them to sit down and drink tea.

(End of this chapter)