The cat Han Xiaomei was outside the corridor, looking around furtively, and finally, when no one was paying attention, stumbled into the trace examination department.
A few minutes later, with her shoulder bag on her back, her hands in her coat pockets as if nothing had happened, she limped on her high heels, and walked out of the Municipal Public Security Bureau with her head held high.
The hour hand approached 12 o'clock, Yan Yan who was sitting in the living room suddenly raised his head, and the next second the doorbell rang.
"It scared me to death. When I came out, I bumped into Director Gou working overtime and asked me why I went to the trace examination department in the middle of the night. I had to say that I forgot to register the inquest box I brought on the scene yesterday, and no one came secretly at night. Make up the registration!" Han Xiaomei took out several bottles, cans and spray bottles from the bag one by one, and she wanted to cry without tears: "Director Gou also taught me a few words, what if he told Yu team what to do? I His great career has just begun and will be tainted!"
Yan Yan didn't say a word, went to the kitchen to pick up half a cup of distilled water, put on trace testing gloves when he came back, mixed the powder of luminol and potassium hydroxide with water, and poured it into a spray bottle filled with hydrogen peroxide.
"Brother Yan, what the hell are you doing?" Han Xiaomei finally felt scared and asked in a low voice, "You... you cut your wrists and got blood on the ground at home?"
"… "
Yan Yan looked her up and down, came to the bathroom door, and took a breath.
Han Xiaomei followed behind, only to see Yan Yan holding a spray bottle and spraying dozens of times on the ground, the corner, and the washbasin, then exited the bathroom and turned off the lights.
"Huh—" Han Xiaomei covered her mouth.
The washbasin in the dark was dotted with stars, and a small patch of faint blue-green fluorescent light the size of a slap slowly lit up on the ground, which was a bloodstain reaction!
"Do you know what's going on?" Yan Yan asked.
"I, I, I didn't see anything, I didn't know anything!" Han Xiaomei covered her eyes with her hands: "Captain Yan, Brother Yan, Rich Master Yan! I beg you, I promise not to say anything after going out! "
"You should have learned in your police school textbooks that luminol solution is catalyzed by iron ions in blood and oxidized to emit blue light, so it is used to detect blood at crime scenes. But if there are other strong oxidants present at the scene, luminol solution It will also emit light, so use hypochlorous acid bleach or feces and urine to smear the scene, and the strong fluorescence will interfere with the judgment of the criminal investigators on the blood."
"I, I, I, we have memorized it," Han Xiaomei said tremblingly, "The strong fluorescence catalyzed by hypochlorous acid lights up very quickly, and the fluorescence catalyzed by blood iron ions lights up slowly, which can be classified by taking pictures and exposing them. Distinguish…”
"But what happened when criminal cameras weren't popular back then?" Yan Yan asked rhetorically.
Han Xiaomei's brain turned desperately, but the strong aura of Deputy Yan's Detachment Sen Han made her turn around and stumble.
"It's actually very simple." Yan Yan showed a sneer and said slowly: "As long as the site is blocked and kept dry, the oxidant will volatilize after a few days of testing, but the iron ions will not disappear for a long time, even if Will still make Lumino shine in a few years."
Han Xiaomei said silently, "Oh—"
"I walked for three weeks, and no matter how much bleach I used that day, it should have evaporated when it was completely dry. That is to say, the fluorescence is not hypochlorous acid, but blood."
The fluorescence is very weak. On the one hand, it has been cleaned by bleach. On the other hand, it is also because the amount of bleeding itself is not much, and it is washed away by water, causing the area of blood to spread. Thinking about it, Han Xiaomei's head was knotted, and she asked subconsciously, "Whose blood is it?"
As soon as the words came out, she wanted to bite off her tongue.
"Who else could it be?" Yan Yan looked at the fluorescent shapes on the ground and the flow table, and said gloomily, "Of course it's that bastard surnamed Lu."
Han Xiaomei: "…"
·
evening.
The red flag car was parked downstairs in the unit, and Bureau Lv got out of the car, declined the driver's kindness to help him carry his bag upstairs, and stumbled into the corridor door alone.
Then he turned the corner, straightened his back and raised his back immediately, walking lightly and nimbly, and strode into the elevator.
"I'm back!" Bureau Lu opened the door with the sound of keys slamming, shouted loudly, put the leather bag under the creaking nest on the entrance, and lowered his head and took off his shoes. The sound of his wife's cooking came from the kitchen, he turned around comfortably and slackened his shoulders, and then the action stopped in mid-air.
Yan Yan sat in the middle of the sofa in the living room and looked at him blankly.
"You said this child, come here, and bring something." My wife brought out the rosy and oily braised pork with mushrooms, braised egg and braised pork from the kitchen, and babbled with a smile on his face: "It's not a good year, and I will give it to an old woman as a gift. What kind of skin care product - I said how can I put that on, this old face has been ruined, it's a waste to apply it..."
My wife, Le Dian Dian, went back to the stove to fry enoki mushrooms with slippery eggs. In the huge space, only Lu Ju and Yan Yan were left standing and facing each other.
"In those days, Jiang Ting visited Yue Guangping without authorization. Only half a year later, Yue Guangping died, and Jiang Ting was finished." Lv Ju finally sighed and murmured, "The state should make a rule that prohibits the detachment leader from visiting the police chief's house. , this omen is really bad..."
Boom!
A glass full of rock sugar, chrysanthemum, and wolfberry tea was placed on the desk by Lu Ju, and then he shoved his big ass into the swivel chair with a "hey" sound, and asked while wearing reading glasses, "What's the matter with you? You are still in the period of suspension and review, and you are not allowed to spy on any information related to the daily affairs and case of the Municipal Bureau, otherwise, you will be dealt with as a violation of discipline."
"What did you want to plan with Jiang Ting when you came to my house that night?"
Bureau Lu paused, "What?"
Yan Yan's face remained calm.
"..." Lu Ju held up the teacup: "I have already told you what I should say, and there is nothing left that I can't tell you, so it's useless to ask. I'm not old Wei, and I can soften my heart if I ask you a few words, rules and regulations. Rules are rules and regulations…”
Pa—Yan Yan took out a portable hard drive from the inner pocket of his coat, and slapped it on the desk.
Director Lu almost choked on the tea: "What is this?"
"The night you were stabbed by Jiang Ting, the surveillance video of the back door of the Hubin Community."
There was a sudden silence in the study room, and the two of them both focused on the small, unremarkable silver mobile hard drive on the desktop. They didn't know what they were thinking about. After several minutes, Director Lu said slowly:
"The surveillance video has been taken away and stored in the city bureau. According to confidentiality regulations, the property management company is not allowed to restore the original video and leak it to any unrelated person, except for the case handlers. Otherwise, they will bear serious criminal responsibility..."
"But the company's internal leaders can be consulted." Yan Yan interrupted him and said, "I'm sorry, my dad has now become the new boss of that property company."
Bureau Lu: "..."
Lu Ju's always chubby and smiling face finally showed an indescribable expression that seemed to be holding back something. Judging from the shape of his mouth, what he was holding back abruptly should be: "I am a fairy!"
"That night three weeks ago, you came to my house to visit Jiang Ting and proposed an undercover plan to him. Unlike the rumors you released later, Jiang Ting didn't reject you, he agreed."
Yan Yan leaned back in the chair, the eye sockets under the sword eyebrows were quenched with cold light.
"You agreed to let Jiang Ting stab you and then escape from Jianning overnight. But there is a very dangerous point here, that is, it takes at least several hours for Jiang Ting to run to the place where the police can't find it for a while, and Even if your stab wound avoids major blood vessels and internal organs, it is difficult to survive for hours in a cold rainy night without rescue - so you agreed to make a time difference."
Lu Ju propped his forehead and remained calm.
"Jiang Ting did leave the house around nine o'clock, but you stayed at my house until the early hours of the morning. It is estimated that after the cleaners on the street started to work, you stood in the bathroom of my house and carefully looked in the mirror to find the cutting edge, Qian Qian. You stabbed yourself. You were a forensic doctor in your early years. You have handled hundreds of corpses in the past few decades, and you know the structure of the human body and the distribution of blood vessels like the back of your hand. In the early morning of the second day, the 'assassination site' you surveyed in advance was very dark and remote, if the hand slipped and stabbed crooked due to the low visibility, it was very likely to cause an accident."
"After carefully tidying up the bathroom, you left my house, came to the assassination site, squeezed the small blood bag prepared in advance, and was found by the sanitation workers and sent to the hospital." Yan Yan said lightly: "Being stabbed and self-stabbed. The stab wound is different. If the injury is strictly examined, it will be discovered, but Director Hu of the provincial technical team responsible for the injury assessment is the master of our city bureau Gou Li. As long as he hints well in advance, he will not come here seriously. test."
Bureau Lu wanted to refute something, but Yan Xun didn't give him the opportunity: "Besides, there is one other thing that can be used as material evidence is community surveillance, but the video is not clear - when I was under surveillance by Fang Zhenghong a few months ago, there were That night, he was following me downstairs and was found. Afterwards, Jiang Ting and I transferred the video from the property management company. It was at that time that Jiang Ting remembered the various surveillance blind spots in the community.”
Lu Ju pressed his beating forehead and said seriously, "Yan Yan, I understand that you don't want to believe that Jiang Ting is a traitor. But can you occasionally reluctantly, condescendingly, and trust your leader a little?"
"Leader?" A sneer appeared in Yan Yan's eyes, and he said, "Deputy Bureau Wei and Detachment Yu have known about your plan from the very beginning, otherwise the small blood bag that was squeezed at the 'criminal scene' would be tested by serum chlorine penetration test. Isn't it revealing?"
Bureau Lu: "..."
Director Lu finally sighed in relief.
"Yan Yan, Inspector Yan, Deputy Yan Detachment." He asked helplessly, "Why don't you believe it, it was Jiang Ting who stabbed you and led me at your house, and then fled while I lied about being stabbed outside. , is it actually to protect you, this goddess?!"
"Because it's you who washed the blood in the bathroom with bleach." Yan Yan said coldly, "Jiang Ting will not mistake my face towel for a rag."
Even if he was killed, Juju Lu, who was old and skilled, would never have imagined that the final flaw would come from here. He sat silently in the big swivel chair, the big round face that he had brought back in just a few days was drooping, only the eyelids twitched and couldn't stop.
"Do you have anything else to say?"
"… have."
Yan Yan made a gesture of invitation with a lot of sarcasm.
Bureau Lu finally couldn't help but ask this sentence: "You are a man in his thirties, and you still wash your face with an old pink-yellow towel?!"
Yan Yan raised the corners of his lips without a smile, "Old towels have good water absorption, otherwise the smell of hypochlorous acid would have remained until now."
The two looked at each other for a long time, and Bureau Lu had a complicated expression. He didn't know whether he should praise Yan Yan's outstanding investigative awareness or regret that he ended up being planted on an old towel. He didn't wipe the last bit of bleach with his coat that night, because he was afraid that the wool fabric fibers would remain in the cracks of the tiles, leaving suspicious clues; .
"—Old, old!" After a stalemate for several minutes, Lu Ju finally shook his head and sighed heavily: "It's useless, alas!"
Yan Yan leaned against the back of the chair, crossed her thighs, and folded her arms on her chest: "So Jiang Ting really didn't stab you?"
"..." Bureau Lu nodded.
"Isn't it taking the initiative to join the king of spades?"
Bureau Lu was helpless and nodded again.
It seemed that something was pinching Yan Yan's throat, blocking his throat, staring straight at the opposite.
"Jiang Ting deployed as planned, infiltrated Wu Tun and Wenshao drug gangs to go undercover, and was ready to wait for an opportunity to remove the entire underground drug trafficking route on the China-Myanmar border and even Jianning." Lv Bureau slowly said word by word: "This matter It is highly confidential and has very few insiders. It has been approved by Director Liu of the Provincial Public Security Department. We have promised Jiang Ting that if he completes the task successfully, he will be rehabilitated, and the truth of the 1009 bombing three years ago will be revealed to world."
"If it wasn't for Bureau Lu to come to the door, I could maintain the illusion for you for a while longer..."
"Do you still believe me? It's right not to."
"...when we meet again in the future, we are the enemy of life and death, and death is the best filter..."
"—Yan Yun," Jiang Ting's eyes were all reflected in the sea of clouds in the sky, but he only fixedly looked at the figure of his lover who was close at hand, and said, "I love you."
…
Countless sounds vibrated in the eardrums at the same time, Yan Yan lowered his head, tightly covering his mouth and gasping for breath. Crazy joy and extreme pain were torn in the chest at the same time, tearing apart the liver and intestines, and wringing out the suffocating pain to the extreme.
Lu Ju crossed his hands and fingers, lowered his head slightly, and shot sharp eyes from the gap of his reading glasses:
"You should be proud of Jiang Ting, Yan Yan, he has already sent us the first very important tip."