Chapter 7 Section 7

two rules. Like ripples in spring water, her voice suddenly flashed in Chu Tianying's mind. There is also her beautiful figure, even if she is wearing a police uniform, even if she is standing on the podium, she can't hide her graceful figure and beautiful face at all.It's just that there is always a layer of frost-like coldness on the pale face—— The so-called law of two means that there is a special law when investigating a crime scene: for a single homicide, two criminal forensics personnel are the most efficient.A single person may miss some things, and more than three people miss more things...

Her voice is always so cold, without a trace of emotion. He raised his arms high. She glanced at him, her long eyelashes flickered silently, her eyes were transparent, as if she didn't see his existence and his movements at all, it was just a blank glance, but he was already intoxicated. Outside the window, catkins fluttered, rippling like a hazy mist. She tapped lightly on the podium with chalk, which means you can ask questions. "Teacher Liu." He stood up, his voice trembling. She is now his teacher, teaching "Finding Trace Evidence in Crime Scenes."He and his class of more than 30 students are all young talents from the provincial public security bureaus across the country. They were gathered at the China Police University for a three-month training. After graduation, they will return to their respective public security departments to serve as more important post.

According to Chu Tianying's original idea, since he came to the highest institution of criminal investigation in China, he should not just "plate gold", but learn some real skills to go back and improve the detection rate of the province. He could use his strength in future work... However, the moment he saw her step onto the podium, all his thoughts were wiped out.All he knew was that his soul for the past three months would be completely dominated by another matter. In the classroom, a burst of laughter suddenly broke out.It turned out that when he stood up, he forgot what he was going to say, and just stared at her obsessively—all the students present here are masters who have repeatedly made military achievements on the front line of criminal investigation. Of course, it is not difficult to see through the mind of this "active criminal" in front of him.

She stood behind the podium, waiting for his question, expressionless. Chu Tianying, who wouldn't blink even when faced with the gangster's gun, now, the heart in her chest was beating wildly as if she had just finished running a hundred meters. "Sure, just sit down," she said. "Yes..." he yelled anxiously, and then gathered himself together, "Mr. Liu, you just said that for a single homicide, two forensic investigators are the most efficient, but if there is a single crime scene How many victims were found? How many criminal forensic personnel are needed? Is there a conversion formula, for example, when investigating a crime scene, the ratio of the victim to the dispatched criminal forensic personnel should be 1:2... "

Someone burst out laughing with disdain. "Who's laughing?" she snapped. In the classroom, it was so quiet that one could hear the rustling of a willow catkin floating in from the window across the podium. "An excellent criminal forensic officer should first be a scientist, and must have a rigorous and digital way of thinking like this classmate. This is nothing funny." She said.Although she didn't even look at him when she said this, his face flushed with excitement, no less than being praised by the teacher on the first day of elementary school. After pondering for a moment, she said slowly: "However, no matter how big the crime scene is or how many victims there are, it is never the quantity of criminal forensic personnel that determines the effectiveness of criminal investigation, but the quality, so there is no such thing as you say The conversion formula. Studies have shown that there are four main factors that lead to the destruction of a crime scene: climate, criminals, family members of the victim, and the first person to discover the case. However, in many cases, the police are better than these four factors. Destroying the scene. Their behaviors such as walking around the scene, moving corpses, touching objects, etc. will contaminate the evidence—especially trace evidence. Therefore, the more criminal investigators entering the scene, the better; on the contrary, because too many policemen entering the scene The resulting confusion should be avoided. Generally speaking, the commander should quickly establish a capable team of personnel with all the expertise required to deal with the scene, based on the type of crime scene and the manner of death of the victim. Teams—that is to say, the allocation of police resources—should be determined by the specific situation on the scene.”

Below the podium, there was a rustling sound of writing. Regardless of appearance or business, they are all exquisite and meticulous. Perhaps it was a desire to conquer, Chu Tianying's mind instantly heated up, and she asked provocatively: "Then, Mr. Liu, if a case occurs, you will be the commander, but in this case, how many victims are there?" More, for example... For example, there are six or seven dead people in one room, how many forensic personnel will you send to investigate the scene?" She looked at him with a little curiosity and a little arrogance in her cold eyes.He couldn't help lowering his head slightly.

"It takes at least ten to twelve hours to inspect the crime scene of a murder case correctly and in a standardized manner." She said word by word, "Considering the large number of victims, in order to ensure that the investigation ends within the effective time, I will send two trace experts, two physical evidence extraction personnel, two videographers and a forensic pathologist to form a criminal forensic team of about seven people. I will lead the team into the crime scene and proceed in strict accordance with the following order Work-- "First, the cameraman will take pictures and videos of the scene as a whole, and then the trace experts will use the powder method to show the fingerprints and footprints; next, I will go through the grid myself, search for the physical evidence inch by inch, and mark the location of each physical evidence location, after taking pictures again, the physical evidence extraction personnel will be responsible for extracting and recording; at the same time, forensic pathologists will conduct serum tests on the blood stains in the area, conduct preliminary autopsy on the corpses, and analyze the time and cause of death of each victim and the manner of death..."

As she spoke, she gently pinched her snow-white slender fingers, as if she was really at the scene of a crime.The sunlight came in from the window, casting a dreamlike brilliance on her face. Chu Tianying was already mesmerized. "Actually... there are still too many people like this." Her deep eyes suddenly froze, "If possible, I would prefer to bring only one forensic pathologist. Even... even no one, just me People, enter the crime scene. I want to observe, touch, listen, feel, and even imagine, the moment the crime happened, everyone on the scene, the perpetrator and the victim, their actions, Language, psychology, feeling——

"The scene is alive, and the scene can speak. Every scene is like a disc full of scratches. As long as you wipe it carefully and read it hard, more or less, it will always hide those hidden things. Things, slowly restore, tell you what happened at that time, tell you the order of what happened, tell you the whole truth..." "Why don't you bring enough signs?!" Li Kuohai scolded angrily, and pulled Chu Tianying back to the ktv room in the lakeside building. Before taking pictures of the corpses, they must be marked with serial numbers to distinguish them.This kind of signage is usually a plastic sign with white characters on a blue background. The criminal police usually only bring two or three yuan to the scene, but today, it is obviously not enough.

"Who would have expected so many people to die all at once..." a criminal policeman muttered in a low voice. Unexpectedly, Li Kuo had good hearing, and when he heard it seriously, he became angry on the spot, and said loudly: "Pig brains—" Before he could finish speaking, Carrot pulled him.Li Kuohai turned his head to see that Chu Tianying was standing behind him, he quickly turned around, stood at attention, and saluted. Chu Tianying knew that there was a major case in the jurisdiction, and whoever was involved would be angry, so he patted him on the shoulder, turned to the criminal policeman who was being scolded, and said, "Why don't you hurry up and get some more signs? "

Standing in the very center of the private room, Chu Tianying's eyes scanned slowly like a camera panning, and the unsightly chaos appeared in front of her eyes one by one—— Those corpses that were accidentally kicked or the limbs that were part of the corpse, those blood stains that were trampled on and dragged in different shades, those rolling wine bottles or microphones, those sofas and coffee tables that were moved wantonly for the convenience of taking pictures... …So, her words could not help but echoed in his ears again: The more criminal investigators entering the scene, the better; on the contrary, the chaos caused by too many police officers entering the scene should be avoided the most. Chu Tianying secretly sighed, if she saw this situation, she would definitely raise her eyebrows. A criminal policeman who was collecting physical evidence was picking up a blood-stained beer bottle cap with tweezers and was about to stuff it into a closed plastic bag. Man, this is not okay! Chu Tianying couldn't bear it anymore, she stepped forward and patted the criminal policeman on the shoulder, "Why do you use plastic bags to store the evidence?" The detective blinked his eyes, as if he didn't understand. "You know, blood is 55 percent water, and you put blood-stained physical evidence into a closed plastic bag, and that water can't evaporate, and they create a very humid environment in the sealed plastic bag. An environment conducive to the reproduction and growth of microorganisms will make it more difficult for the identification and preservation of blood evidence in the future." Chu Tianying said rigorously, "The correct way is to use a paper bag, because the paper is breathable and there is enough air to permeate it. In and out of the paper bag through the gaps between the paper fibers. This way, the moisture in the paper bag can be evaporated - blood is much more stable when it is dried than in a humid environment." The criminal policeman was still in a daze, but Li Kuohai yelled at the side: "Chu Chu is teaching you! Remember?" The criminal policeman nodded, holding the tweezers holding the beer bottle cap, but he was a little at a loss. "Chuchu." Li Kuohai smiled wryly, "The conditions of our county bureau are poor. There are no paper bags for evidence, only plastic ones." Forget it, judging from the current level of crime scene investigation in our country, it will not happen overnight if we want to make a big improvement.After all, what Li Kuohai led was just a group of criminal police officers from the county-level public security bureau, and they had already worked very hard. In the end, I watched the criminal policeman put the beer bottle cap into a plastic bag. At this time, Chu Tianying's gaze was attracted by something on the glass coffee table—— It was a flat, round thing that looked like a cake made of jade, exuding a milky white and slightly bluish light, with some fine lines engraved on it.If you look carefully, you can see that it is a picture of eight trigrams: two yin and yang fish are swimming together, each with a fish eye on its head.However, neither the fish body nor the fish eyes are marked in black or white, so it is impossible to tell which is the Yin fish and which is the Yang fish.On the edge of the jade cake, there is a row of push buttons. "What is this?" Chu Tianying couldn't help asking curiously. Li Kuohai glanced forward, and immediately replied: "Five Elements Yin and Yang Mirror." "What?" Chu Tianying didn't understand. "What's wrong, you don't even know this?" Li Kuohai was surprised, but he couldn't help but feel a little proud, "Five elements yin and yang mirror, take care of it without getting sick-this advertisement is published in newspapers, broadcast on TV every day, It was played on the radio, and now the children all over the street are singing it as a nursery rhyme." Next to the carrot, someone interjected: "Yes, this thing is very popular now. It is said that as long as one photo is taken every day, no disease can be cured, and any disease can be cured. But it is very expensive. It costs more than 5,000 yuan a piece. There is no way. , High technology! In our township, only Li Dazui, the owner of the lakeside building, bought one for his mother. His mother has stomach problems. After a period of time, it is said that the pain is not so bad. My arms were always numb a while ago. , Li Dazui also brought it for me to use, and I didn’t see any effect after taking photos, so I gave it back to him.” Then, he knelt down and looked carefully at the five-element yin-yang mirror on the glass coffee table, and shook his head, “This It’s not the one that Li Dazui bought for his mother, his one fell once, and there is a crack on the side, but this one doesn’t, it’s quite new.” Why is there such a thing in the ktv private room? Chu Tianying can't figure it out, but there are still many more problems that need to be solved than this.He walked out of the private room, called Luo Luo, Li Kuohai and others to the front desk of the lobby, and held an urgent on-site office meeting. "I've assigned a few tasks, and everyone will execute them immediately." Chu Tianying lowered her sword eyebrows, and said in a decisive tone, "First, from now on, except for criminal forensics personnel and forensic doctors, all criminal police will be withdrawn from the lakeside building. There are so many people crammed into private rooms, it’s outrageous! I just saw that the cordon hanging around this building was almost blown away by the wind. Anyone who wants to enter this circle must get my personal approval—even a mouse is no exception!" "Yes!" There were unanimous responses. He went on to say: "Secondly, the special police team is divided into four groups, and pursues suspicious criminals in the four directions of southeast, northwest, and the national road and expressway leading to Hulingzi Township from eight o'clock last night to four o'clock this morning Surveillance video, check all suspicious vehicles. "Thirdly, Lao Li, organize the interrogators to conduct a surprise interrogation of the woman in white, as well as the first discoverers Chen Shaoling and Zhang Dashan." He looked at the watch on his wrist, "It's five o'clock in the morning. Three hours later—that is, eight o'clock in the morning, we will hold the first case analysis meeting, and the meeting place will be in the conference room of the township police station. At that time, the preliminary investigation report will be formed after the first inspection of the crime scene. The report and the preliminary examination report on the three persons will be submitted at the meeting for everyone to discuss." At this time, the mobile phone in the pocket suddenly buzzed, and Chu Tianying took it out to answer it, and his expression suddenly became more serious. He said a few words in a low voice, and then said a few nails in a row, " yes".After hanging up the phone, he said to everyone, "Deputy Director Wang of the Provincial Department is on his way here. He will also attend the case analysis meeting at 8 o'clock in the morning." my country divides criminal cases into six levels according to their severity: general criminal cases (killing one person), major criminal cases (causing two deaths at one time), major criminal cases (causing more than three deaths in a public place at one time), and extraordinarily serious criminal cases ( More than ten deaths at one time, or more than six deaths in public places), major cases supervised by the Ministry of Public Security (more than twelve deaths at one time), major cases supervised by a "team group" (the number of deaths is not limited, but due to the circumstances of the case) excessively creepy or gory to attract international attention). Now, there are six corpses lying in a private room. The Provincial Public Security Bureau not only sent Chu Tianying, the director of the criminal investigation department, but now even Deputy Director Wang is also dispatched in person, which shows that it attaches great importance to this extremely serious criminal case.Everyone's nerves seemed to be tightened, and they quickly went about their own affairs according to the division of labor. Chu Tianying waited for the "clearing" of the lakeside building to be completed, and only brought a few criminal police and forensic doctors into the private room to investigate the crime scene bit by bit.Unknowingly, my stomach growled, and I looked out the window covered with hoarfrost. The eastern sky was blood red like a wound. I raised my wrist to look at my watch. It was almost seven o'clock, and I remembered that the case would be opened at eight o'clock. During the analysis meeting, Deputy Director Wang and others rushed over, they must have not eaten breakfast, so they hurriedly called Carrot over: "Old Hu, breakfast on the hour, okay?" Carrot scratched his scalp, with a look of embarrassment on his face, "The breakfast here is all homemade, and some restaurants don't open until noon... By the way, there is a hotel called 'Prairie Hotel' not far from here. The boss’s surname is Yang, and his nickname is Onion, I’ll go to him to find a way to ensure that the leaders can have hot food when they meet at eight o’clock.” Chu Tianying nodded again and again, "Then I will trouble you, Hu." Carrot drove a broken jeep, chugs around a bun-like hill, and arrived at the Grassland Inn within five minutes. This hotel is older than the lakeside building, and the brick-red building is spread lazily on the cement floor.The broken jeep drove all the way to the door, only to see Erbald, Onion's silly son, squatting on the ground snoring and drinking a bowl of porridge.Carrot got out of the car and asked, "Where's your father?" The second bald man stretched his neck towards the door in a foolish way.Carrot opened the door and walked in, and saw Onion sitting behind the counter, flicking through the bills, knocking on the calculator like revenge, his eyes were bloodshot, as if he hadn't slept all night. "Onion, breakfast at the hour, okay?" Carrot said loudly. Onion looked up, "Hu Suo is here?" He hurriedly explained to the guy next to him: "Next noodles, roll two chickens, add more chopped green onions, hurry up!" Carrot stopped him, "A big leader from the province is coming, and I didn't have breakfast. I thought you'd be the only one to open in our township so early. Let's get something to eat with you." "What happened?" Onion trembled. "Look at you, why are you so nervous?" Carrot gave him a strange look. It's the rule in handling cases not to let the wind out, but with such a big case, papers can't contain the fire after all, and things will spread quickly. , all belonged to the folks in the village, and it was not good to hide it from him, so he simply said: "Something happened to the lakeside building." "Ah?" Onion was taken aback, his face became extremely ugly, "What happened?" Carrot was moved for a moment. In the early days, there was only one hotel in Hulingzi Township, the "Prairie Hotel". At that time, the national road had just passed through the village, and Onion was such a calculating person. He immediately built a row of simple houses with blue gables and white roofs at the intersection of entering the village, and put up a big and tall sign—" "Driver's Hotel" for the drivers who come and go to rest.In a few years, he became the richest household in the village, and he demolished the simple house to build this prairie hotel, thinking that now he would have even more cash in his pocket.Unexpectedly, within a few months, Li Dazui, a fellow villager who was always cheerful, suddenly built a lakeside building by the Lake of Tears. Onion laughed at him at first: How could anyone build a hotel so far from the national road?But not long after, the county government issued a document designating Lake of Tears as a county-level scenic spot. Many wealthy people drove straight to Lake of Tears, and lived in buildings by the lake when they were tired of playing. It went into Li Dazui's pocket.This made Onion very angry, every time he saw Li Dazui, the flames in his eyes could light up against the wind! Now, when I heard that something happened in the lakeside building, Onion's worried expression was not faked. Unexpectedly, this old boy still has some conscience—Carrot thought so, and said: "Don't ask so many questions, hurry up and start a fire, fry fried dough sticks, boil soy milk, there are many people, you can order it on time, and it will be delivered at eight o'clock." Go to the police station before it's too late." In the midst of being busy, eight o'clock passed without knowing it. Carrot looked at his watch and remembered that a case analysis meeting was to be held, so he hurried to the township police station, and bumped into Erbald and Onion who had returned from delivering meals. . Seeing Onion asked about the case again, asking him to "disclose some information", Carrot was a little impatient, "Why are you asking nonsense, I'm going to the office for a meeting, don't delay my time... What's the matter with crying and mourning? Not one cent is less than yours, and the village will reimburse you!" "No, no..." Onion waved his hands straight, his thin lips seemed to be glued together, and he wanted to say something but couldn't say anything, his eyes rolled around in a hurry. "What's the matter with you?" Carrot was a little puzzled, "What do you want to say?" Onion's eyebrows were pressed heavily, and when he raised them again, he had put on a friendly smile that innkeepers often put on his face, "It's nothing! It's nothing!" Then he pulled it aside Shale's son Erbald walked quickly into the distance, staggering.