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Bloody Wedding ¡¤ Twelve

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    With everything arranged properly, a few of us successfully climbed over the barbed wire fence with the help of ladders.  At the other end is a pine forest. It is easy to tell from the thick fallen leaves on the ground that few people come to this place.

    As soon as our feet landed, Lao Xian bent over and held up a magnifying glass and began to study the bark of each tree.  While he was absorbed in his research, a crooked-necked tree on the slope caught my attention.

    There is almost no garbage except fallen leaves under other trees, but there are a lot of purple packaging bags scattered under this tree.

    In order to find out, I walked over. My actions also aroused Fat Lei's curiosity.

    As the distance gets closer and closer, the writing on the packaging bag gradually becomes clearer. When the text message is clearly captured by me, scenes with mosaic scenes instantly appear in my mind.

    "Shubiz Condoms." Before I even opened my mouth, Fat Lei read a string of small characters on the packaging bag loudly.

    "Damn, Brother Lei, your eyesight is really good. You can see such small words. I admire you, I admire you." I teased.

    "I'm dizzy. There are so many, at least a hundred or ten, and they are all of the same brand. Is this person addicted? He went to fight in the field where no one comes?" Fat Lei picked up a branch and dropped it on the ground.  Sighing while pulling.

    "That's the tree." Lao Xian's voice came from above us. I looked up and saw that he happened to be standing in front of this crooked-necked tree, pointing at the bark with his finger, looking very sure.

    "What? What a coincidence?" I quickly walked up to Lao Xian in disbelief, and I was shocked by the scarred nail prints on the tree bark.

    "Look, these marks should have been left by the suspect when he climbed last night, and they are still fresh." Lao Xian reached out and placed the magnifying glass above the marks.

    "Moreover, I have observed all the trees nearby, and I can see only a few trees facing the crime room. There are no traces on the other trees, so I can be sure that these are the trees where the suspect stepped.  ." Lao Xian added.

    "Judging from the dense old and new traces on the bark surface, the suspect is not here for the first time. He should come here often." I walked around the trunk.

    "Xiaolong, the suspect wore gloves when committing the crime, but in order to increase resistance when climbing trees, he might not wear them. Is there any way you can deal with the fingerprint marks on the surface of this tree?" Brother Ming placed hope on me.  .

    "I was already prepared at the unit just now." As I said that, I walked to the survey box and took out a large bottle of light yellow powder from it.

    "What is this?" Ye Qian's curiosity is always so intense.

    "This is a powder I bought from a Chinese medicine store, called pine pollen."

    "Pine pollen? What is it used for?"

    "It is a kind of traditional Chinese medicine, which is the dried pollen of many plants of the same genus, such as Masson pine and Pinus tabulaeformis. Its main purpose is to reduce inflammation and stop bleeding."

    "Chinese medicine can also be used to extract fingerprints?" Ye Qian asked doubtfully.

    I smiled confidently: "Either traceology is a subject that requires continuous and in-depth study. As long as you understand the special effects of pine pollen, you will not doubt it."

    "I'm all ears." Ye Qian pinched her waist with both hands.

    I unscrewed the jar in my hand: "We know that what is left on the surface of the bark is mainly the sweat fingerprints of the finger skin."

    "Well, that's common sense."

    "Pine pollen has a strong adsorption effect on the sweat fingerprints on the plant epidermis. The part of the plant epidermis where the sweat fingerprints are left is relatively moist. When the pine pollen particles come into contact, the adsorption force and water permeability of the pollen cell wall and the native proteins contained in the fingerprints  The hydrophilicity increases the cohesion of the molecules, thereby firmly sticking the pine pollen to the lines of the handprint."

    I looked at Ye Qian¡¯s confused look and added: ¡°To put it simply, pine pollen has a special liking for the fingerprints on the epidermis of plants and has a certain affinity.¡±

    Ye Qian couldn't tell that I was teasing her, and she said "Humph": "Everyone will say, if you have the ability, just let me remove the fingerprints on this crooked neck. I want to see if the pine pollen is so"  magic."

    I smiled slightly, didn¡¯t answer, put on my mask and walked towards the tree trunk.

    I took out the thermometer and measured the outdoor temperature, which was six degrees Celsius.

    Seeing this value, I put the thermometer back with confidence.  The main reason for measuring temperature is to exclude the occurrence of frozen fingerprints.

    It is winter now. Since sweat fingerprints also contain inorganic salts, inorganic salts have a certain degree of water absorption.?When the temperature drops below the freezing point (zero degrees Celsius), fingerprints will freeze to varying degrees. When pine pollen displays fingerprints, it must be ensured that the fingerprints are in a liquid state. The current temperature is obviously above the freezing point.  This eliminates my concerns.

    The method of showing fingerprints with pine pollen is very stupid. It is just a simple and crude way to sprinkle it on. There is no technical content. In just one cigarette, I sprinkled the whole tree trunk with powder. Then I took out the inspection record book as a  "Fan" to remove excess powder from the tree trunk, more than a dozen handprints with yellow powder attached appeared in front of us.

    "You can't see the lines of the handprint at all, how can you tell?" Ye Qian told the key point.  Because fingerprint identification relies on some detailed features on the fingerprint. Because the bark of the tree is uneven, no features can be seen in the fingerprints I processed.

    I raised my eyebrows, not worried at all because of this.  Then I found a ruler from the tool box and began to measure the length of the palm prints and knuckle prints on the tree bark.

    Several people looked at my actions curiously, wondering what kind of medicine I was selling in my gourd.

    After measuring all the palm print data, I got an answer with confidence.

    "Brother Ming, all the fingerprints on this tree were left by one person. Through comprehensive analysis, it should be the suspect. The suspect is male and should be about 1.75 meters tall. If we can find this suspect,  I can analyze whether he is a suspect by the length of his knuckle prints."

    "Really or not?" Ye Qian suddenly flashed her big eyes.

    "It's actually very simple to judge these. The first thing is to judge the gender by the size of the handprints. Men's palms are wider and their fingers are thicker than women's. There is also a numerical value for reference. I just measure the full length of these palm prints to determine the gender.  The suspect turned out to be male."

    "Secondly, knowing the length of the palm, there is a formula that can calculate the approximate height of the suspect. Although the error exists, it is within a controllable range."

    "Finally, what I want to talk about is the length of the knuckle prints. According to normal understanding, we should know the small characteristics of the suspect's fingerprints before we can identify the suspect's identity, but this is not absolute. Just open your palm."

    Ye Qian followed my instructions and took off her gloves, revealing her fair and slender right palm.

    "Have you ever seen the horizontal knuckle lines on your fingers?"

    "Well, yes, what's wrong?"

    "Except for the thumb, each of our fingers is divided into three segments by the knuckle print. The length between these three segments is almost different for everyone and is a specific value."

    "Oh, I understand. What you mean is that although we can't see the lines of the fingers clearly now, we can first measure the length of the suspect's knuckle prints. Once we find the suspect, you can measure his value.  Is it similar to the value we have? Then we can determine whether he is a suspect." Ye Qian suddenly realized.

    "Let me correct you. This can only confirm that this person is highly suspected of committing the crime, because the length of the knuckle print is not as fixed as the fingerprint line. There are still many variables in it, such as dislocated finger joints.  situation, or finger tendon rupture, which will affect the value, so this can only be used as side evidence to assist in solving the case, and cannot be used as direct evidence for conviction."

    "Okay, you're awesome!" Ye Qian was willing to admit defeat.  (Remember the website address: www.hlnovel.com
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