"The physical evidence marked 10, the footprints on the outer wall of the apartment building where the deceased lived, the traces are too shallow, only half, and the technical team used the latest technical equipment to restore the ...... as much as possible."

Ye Fan opened the technical report of the technical group, a picture of shoe prints printed on A4 paper, the left is a shallow mark found from the case in rubbing, the right is a complete shoe print restored by three science and technology, and the following is an analysis report, through various data comparisons, the first one on the right has a matching rate of 61 percent, the second one is 65 percent, and the third one is 50 percent.

"As you can see, these three shoe prints are more than 50 in terms of graphics, edges, and fits, the first and second are climbing shoes, the third is traditional canvas shoes, and the highest consistency is this Y climbing shoes. ”

Qian Qian pointed to the second climbing shoe in the middle and explained in detail: "Rock climbing shoes are shoes specially designed and made for rock climbing, generally with lightweight, soft and sticky rubber as the bottom, so as to facilitate rock climbers to better use the pedaling action on the rock wall, and the edge design of the footprints from the scene, the possibility of climbing shoes is greater, especially the high-efficiency climbing shoes of the Y family." ”

Ye Fan's slender fingers pointed at the footprints rubbed on the spot, and there was a downward mark in the middle of the sole, which was very consistent with the starting position of the Y-shaped imprint on the sole of the Y family's climbing sole.

Under the sub-board map, there is also a piece of information from the Y family, focusing on high-efficiency climbing shoes.

Y is a company specializing in outdoor sports brands, is one of the most important brands in the Eurasian outdoor market, with unique design and comfort well-known in Eurasia, its products are all over clothing, footwear, meat ball equipment, ski equipment, climbing equipment, especially rock climbing equipment recognized as the leading outdoor brand in Eurasia and even the world.

Climbing shoes are divided into three categories according to their appearance, full-functional, high-efficiency and climbing slippers, among which the high-efficiency type adopts a low-ankle design to increase the flexibility of the foot and reduce the weight of the shoes, and the bottom also has a curve change, which is very consistent with the traces of the footprints on half of the crime scene.

However, at the root of the back foot, there are two small round blanks on the footprints at the scene of the crime, and none of the several climbing shoes on the market at the Y family are in line with the sole.

The first 61 percent fit is from another emerging outdoor brand, which currently only makes hiking, cross-country and climbing equipment, and is made of retro and high-quality imitations.

It is not easy to find such a high degree of texture in such a short period of time, and thanks to the serial decapitated homicide case that was broken before, the Lucheng Criminal Investigation Brigade is famous throughout the country and is highly valued by the top.

The equipment of the technical team and the forensic team is almost all shotguns and cannons, otherwise the report would not have been issued in such a short time.

"The black substance under the round stone bench on the roof of the building is also from the rope in the climbing equipment?" Ye Fan flipped to another inspection report with the number eighteen below, which was the black substance found at the bottom of a stone bench column on the roof of the building after she didn't sleep at night and went to the crime scene to shake around.

"That's right. Qian Qian looked at Ye Fan, with two big bags under his eyes, and said with some grievances: "This is thanks to the result of you wandering outside in the middle of the night." ”

As soon as these words came out, everyone in the office turned their eyes on Ye Fan, and now these people, whenever there is a big case, they can't sleep well at night, just because of her hobby, although there must be major discoveries every time, but it really hurts.

"Uh, my bad, my bad. Ye Fan scratched his head and said, "I promise, try to avoid it in the future." ”

"Okay, don't laugh, Qian Qian, go on. Team Chang tugged at the corners of his mouth and tapped on the whiteboard with an oil-based pen.

Although Qian Qian became the team leader, his temperament was still so jumpy, and he winked at Ye Fan before continuing: "Dyneea strength polyethylene fiber was detected in the black substance, generally marked 22kn, melting point 145 degrees, light advantages, wear-resistant, high strength, not easy to absorb water, especially suitable for winter or ice climbing. ”

"The technical team compared the rope products of several climbing brands, and for the time being, they have not compared the exact same products, and they still need to collect more samples for comparison before they can be determined. ”

Everyone was somewhat disappointed when they heard this result.

In the gloomy atmosphere, Ye Fan's voice as clear as a stream sounded: "At least we can confirm that the murderer climbed from the roof of the building to the deceased's bathroom and made a set of rock climbing equipment, this person is very likely to be a rock climbing enthusiast, so he has such professional equipment." ”

"Why can't it be bought temporarily?" Qian Qian asked, it is very convenient to buy these things now, and from the physical evidence left at the scene, it is not yet possible to detect the newness of the equipment used.

"You're stupid. Without Ye Fan answering, Han Han slapped him on the back of the head, rolled his eyes and said: "The professional equipment of the climbing rope seems simple, but it is not a person who understands, and it can't be controlled at all, otherwise how can you call a professional warning to go down to collect evidence at the scene of the crime that day." ”

"Speaking of climbing shoes, in order to concentrate the power on the thumb, so as to step on the rock wall to stabilize a small foot, the design will squeeze the toes in the direction of the thumb, people who have not worn it are not used to wearing them at all, the murderer went to great lengths to enter the house to kill people, not really want to climb, why have to wear a pair of shoes that are not used to wearing. ”

"yes, that makes sense. Qian Qian scratched the back of his head where it was slapped and smirked.

The team also wrote down the climbing enthusiasts on the whiteboard, followed by climbing shoes and climbing ropes.

Ye Fan flipped through the inspection report and reminded: "The size of the shoes is about 36 or 38, and the rope is black." ”

Due to the incomplete footprints on the site, the technical team simulated and restored them through special equipment, and it can be roughly inferred that they are between 36 yards and 38 yards.

The team noted it again after the climbing shoes and climbing ropes.

Xia Dong looked at the size of the shoes and said thoughtfully: "This size is more like a woman's size, and an adult man's size should be a very small size." ”

"Not necessarily. Chang shook his head and said, "I used to learn rock climbing, in order to better exert force on the rock wall, rock climbing enthusiasts generally choose shoes that can tightly cover their feet, smaller than the size of the shoes they usually wear, and professional rock climbers will even choose a size much smaller than their usual size, so it is not possible to judge men and women by this." ”