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Burn the heart with fire ¡¤ 4

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    It rained occasionally in Yunxi City a few days ago, and the dirt roads in the countryside were relatively soft. The suspect left a large number of clear three-dimensional marks on the road.

    I found another string of shoe prints and said: "With the stone arch bridge as the boundary, the suspect's shoe prints are all concentrated on the ground south of the bridge, indicating that the suspect came from the south to dump the body. After the body was hidden in the bridge hole, he returned  We turned back the way we came. We visually determined that these two large packages of body parts should be the weight of an adult after being dismembered. I guess this is where the suspect dumped his body."

    "Well, that makes sense, go on." Fat Lei listened very seriously.

    "Now that we know where the body was dumped, let's analyze the suspect's method of dumping the body. I just walked a long distance south of the bridge. Although there are many tire marks on the road, these marks can basically be eliminated."

    "You excluded based on the depth of the three-dimensional footprints?" Fat Lei had already guessed what I wanted to express.

    "Yes. I observed it for a long time, and all the shoe prints had this feature. Sometimes the three-dimensional shoe print of the left foot was deeper, and sometimes the three-dimensional shoe print of the right foot was deeper. The depth of the shoe print reflects the suspect  The degree of weight-bearing, that is to say, the left and right sides of his body bear weight alternately. Judging from the depth of the three-dimensional shoe prints, his weight-bearing is not small. "

    "You mean, the suspect carried a woven bag on foot to dump the body?"

    "You are only half right. There are two large packages of corpses at the crime scene. It is difficult to carry them. He should have used some kind of tool."

    "tool?"

    ¡°Brother Lei, please pull out the photo and look at the sealing position of the woven bag.¡± Fat Lei opened the camera as I said.

    ¡°Is it this one?¡± Fat Lei handed me the camera, and an enlarged photo appeared on the LCD screen on the back of the camera.

    "Look at the way the woven bag is knotted."

    "How to tie the knot?" Fat Lei looked at it as if he didn't understand.

    "About 'tying', there is a special introduction in trace science. There are more than ten knotting methods that I know of. Among them, the most commonly used ones are half knot, figure eight knot, flat knot, fisherman's knot, Prussian knot, and camp knot.  Nail knots, shrink knots, rope knots, wooden knots, etc. The knotting method used by the suspect is wooden knots.¡±

    "Tying wood knots was first invented by mountain people. They went to the mountains to cut firewood. They first gathered the chopped firewood into two piles, then tied one pile with ropes, and then tied the other pile with wooden sticks between the two piles.  Once you put it on, you can use the principle of leverage to balance on your shoulders and carry the firewood down the mountain. This method of tying the knot is the strongest and is very convenient to untie, and it gradually became popular."

    "You mean the suspect carried two bags of body parts on a pole and dumped the body on foot?" Fat Lei already knew the result.

    "Yes, if it is a package of body parts, the suspect may be carrying it alternately with both hands. What we found at the scene were two packages of body parts. This requires the use of tools. According to the 'tie wooden knot' on the woven bag,  I can confirm that the suspect dumped the body on foot carrying a pole and did not use transportation."

    ¡°Then this guy¡¯s physical strength is good enough!¡± Pang Lei sighed as he raised his head and glanced at the invisible shoe prints.

    After confirming this point, we went back to the bridge again. The shoe prints beside the bridge hole were not artificially destroyed, which is conducive to my next analysis work.

    "Xiaolong, can there be other information from these shoe prints?" Fat Lei looked at me who was attentive and asked.

    "Yes!" I said after taking out a magnifying glass and observing carefully, "The specific time the suspect dumped his body should be within four days."

    "Four days? Are you sure?" Fat Lei really couldn't figure out where my conclusion came from.

    I patted the dust on my palms and explained: "From dumping the body to reporting the crime, no one except the suspect has been here, so I can make a bold analysis with confidence. Shoe prints outdoors, especially this kind of mud shoe prints  , after being exposed for a long time, there will be subtle differences every day. For example, the raised pattern edges of the footprints gradually collapse due to wind; another example, the soil color changes due to the evaporation of water. These can help me analyze the freshness of the footprints.  .¡±

    Fat Lei listened very intently and did not interrupt me.

    "The changes in outdoor mud shoe prints follow certain rules. Undamaged shoe prints remain for a longer time. Within half a day, the edges of the shoe prints are neat and sharp, the soil color is darker, and the features are obvious; after a day and night, the edges begin to fall off, and the shoe prints  The color is consistent with the surrounding soil; after two days, the edges and corners fall off, the water evaporates, the soil begins to loosen, and the edges and features are no longer clear; after three or four days, there will be slight cracks at the bottom of the shoe prints and traces of insects and ants climbing, and then the  Coupled with the effects of dew and moisture, the footprints showThe soil will stick together to form flakes due to the tension of the water droplets; combined with the temperature and humidity at the crime scene, I can basically judge the time when this string of shoe prints were left.  "

    "You win!" Fat Lei gave me a thumbs up.

    "The traces are fixed. I'm going to call Brother Ming and them to come in." In order to save time, I jogged all the way to the shore and waved to Brother Ming.  After getting the signal, Ye Qian ran towards me in a hurry carrying Brother Ming's survey box.

    "Don't be so excited. The body parts are already putrid and can't be covered by a gas mask. You'd better stand farther away." I directly blocked Ye Qian who was about to rush forward.

    "It's okay!" Ye Qian followed Brother Ming nonchalantly and walked straight towards the two bags of corpses.  (Remember the website address: www.hlnovel.com
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