“Ning the neck,” Liu Jiajun said with a deep voice after seeing the photos brought back by Meng Jie and Wu Zhe.

“Could you be sure?”Meng Jie is somewhat unfamiliar with the term, but he believes in Liu Jiajun's professionalism.

“Nine and nine are not far off, and the material is estimated to be specially made.”Liu Jiajun nodded, "I used to hang the neck, and I know that some of my peers like to use this, but the wound is so deep is the first time to see."

“What do you mean?”Wu Zhe did not understand that he felt from Liu Jiajun's words that there were still many neglected details on the wound.

"There's a material you don't know if you've heard of it, Kevlar, English original name is Kevlar."Liu Jiajun looked at the appearance of the deceased's wound on the photo, and was more certain in his heart, "that is the brand name of aramid fiber material products developed by DuPont of the United States, originally named "polytezoyl tonic hydride".

“Is it fire-resistant fiber?”Wu Zhe suddenly had a little impression.

“There is a saying,” Liu Jiajun continued, “the density of this new material is very low, but the strength is very high, and the toughness is good and resistant to high temperatures.”

“Putin, then, among civilian materials, the strength of Kevlar can be five times that of the same quality of steel, and the density is only one-fifth of that steel, and the properties of military materials will only be better.”Liu Jiajun's explanation of Kefra is very straightforward, and then he combined his experience with his use to introduce, "with Kefrat's collar strength than steel wire several times, and its excellent toughness allows it to be very fine, you should understand that the smaller the area of contact between objects and skin and muscles, the stronger its penetration and cutting ability, just like the faster the knife cutting things."

"I have a question," Meng Jie suddenly asked, "the force's role is mutual, and the strength of Kevlar is so high that the murderer will not hurt his own hand when he pulls the string of this material when he commits the crime?"

"I don't know how the murderer circumvented this problem, but when I used the special Kevlar hanging filament, the tool I used was a ring," Liu Jiajun put the photo in his hand on the table, and the details he could see inside had been analyzed, and then he was just providing Meng Jie and Wu Zhe with some new ideas to help them find more clues.

“The ring?”Liu Jiajun's answer was somewhat unexpected by the two.

"Yes, a special ring," said Liu Jiajun, taking a cap on the table, "the principle is very simple, you take this as a ring, ah, just in the middle of the circle outside it to carve a grooves in advance, and then use the gallows to kill, the silk of Kevlar material around this grooves, so that it will not hurt themselves."

“So,” Meng Jie and Wu Zhe suddenly realized.

"What you need to pay attention to is the problem of the wound," Liu Jiajun once again stressed, "this wound is too deep."

“You mean the killer has a lot of power?”

“Perhaps it is possible that the murderer intended to deliberately create a great illusion.”Liu Jiajun thought about it and said his guess, "Can use the Kevlar material of the hanging filament, the identity of this murderer will not be simple, even ..., the identity of the deceased will not be simple."

"When the murderer kills, he only needs to suffocate the deceased, and he does not need to spend more effort to break the neck artery of the deceased."Because the reason is very simple, the fewer traces left on the scene of the crime for the murderer, if he uses more strength and time to cause meaningless wounds to the body of the deceased, this behavior will only add unnecessary trouble to himself, and the haemorrhage caused by the severed artery on both sides of the neck of the deceased will also make the scene of the crime in disarray, almost 100% of the blood of the deceased will be attached to the murderer, regardless of the traces or smell may be fatal clues.

“In other words?”Wu Zhe seems to have thought of a possibility.

"There may be only one truth."Liu Jiajun nodded, and he guessed that Wu Zhe should have understood the problem he wanted to explain.

“This act of the murderer was intentional and may have been intended to confuse others.”

“Yes, and I even think the murderer is a woman who made the wound in the neck of the deceased in order to mislead others about the sex of the murderer. After Liu Jiajun said this, he looked forward to Meng Jie and Wu Zhewang in the past to see their reaction to this conclusion.

“I have obeyed!”Meng Jie and Wu Zhe spoke with one voice.

"I will go to Master Xiwu again and see his opinion," Meng Jie said as he was ready to go to Wu Wu, but Liu Jiajun shouted, "Master Wu went to Hengsha Island to undertake the intention to take care of the school, it is estimated that it will be a while."

"Well, then I will first tell Captain Gu you analyze the situation," Meng Jie nodded, just now Liu Jiajun's words let him realize that the situation behind the murder in East Andong will be very complicated, he did not want to delay, so he pulled Wu Zhe ready to go to Anan.

Just as Meng Jie and Wu Zhe left the building in the East Beach International Conference, the sound of the school bell suddenly sounded on the playground of Hengsha Primary School, and some students began to walk out of the classroom with their backpacks.

Du Chengzhi today is the first day to come to class, because he has been completely read the relationship between the second grade, he still has a lot of cultural knowledge in the classroom, and the teacher often raised his hand when asked questions, and his performance is very active.

Hearing the bells of school, Du Chengzhi began to sort out the books on his desk and put them neatly into their schoolbags.After he had packed this up, he suddenly had an arm around his neck.

"You call Du Chengzhi ah," a child who is stronger than him will put his hand on Du Chengzhi's shoulder, the action seems to be intimate, but in fact, the strength on his arm is not small.

Du Chengzhi stood up by him and asked with a suspicious face, “What is it?”

"Hey, make a friend," the boy grinned, "come with your brother."

A few children with him pulled Du Chengzhi into a remote corner of the toilet.Nearby is the wall under construction, and there is a lot of cement and sand on the ground.

"My name is Sun Chenhao, and I am the bearer of our second grade, this is the second, the third, and the fourth."After the boy introduced himself, he pointed to the other children.

"You are new, according to the rules after school must first recognize the big brother," Sun Chenhao hand on Du Chengzhi's clothes a few times, his eyes on his simple dress show a little contemptuous look.

"Shout my brother, and then call my second brother, they are the third brother and the fourth brother, you must shout one by one," another tall and thin child continued after Sun Chenhao's voice, "After worshipping our brothers, you will be the people we are wearing, of course, you must listen to us."

Du Chengzhi did not like these flowing classmates, the voice and posture of Sun Chenhao reminded him of the past in the chicken cage mountain often bullied himself.

“Why should I listen to you?”Dude was slightly impatient.

“Huh?”Sun Chenhao did not expect Du Chengzhi so hard, he made a look at the child next to him who claimed to be the second, and the other party walked over to the side.

"If you don't obey, you will be beaten," Sun Chenhao said with a small fat hand on Du Chengzhi's side of the face gently patted, his strength is not used, but the taste of provocation is very strong.

Du Chengzhi opened Sun Chenhao's slap with his hand, "I am here to read and study, not to learn to mix with you."

“You!”Sun Chen Hao saw that Du Chengzhi did not put his words in the eyes at all, and could not help but be angry.

He grabbed Du Chengzhi's collar and pulled him in front of himself, and the tall, thin and thin child next to him took the opportunity to tuck a handful of sand into his neckline.

“What are you doing?”Du Chengzhi was angry, and he quickly pulled his clothes away with his hand, trying to shake out the sand tucked into the neckline.But because he wears more clothes in winter, he still has a lot of sand sticking to his body for half a day.

"Hahaha," the bad boys around them have been laughing, they usually like to bully other children together to have fun.

"I tell you, as long as you dare to tell the teacher about this, the next time the sand is stuffed into your mouth," Sun Chenhao threatened.

His family has been taken to grandparents, but his grandfather Sun Minghui is in a high position, usually busy with work, so the task of taking him almost falls on his grandmother alone.

Although Sun Minghui has two sons, he only has one grandson, and his wife Wang Xiaoyan naturally pet Sun Chenhao into heaven.

After this boy came to Hengsha Island to study, most of the teachers and leaders in the school are aware of his family background, so although he has heard more about bullying other students, but few people have come forward to educate and blame him, those teachers are more than arrogant in front of Sun Chenhao's uncle Sun Zhihao, so in the eyes of the family, Sun Chenhao's image is even enough to meet the standards of five good teenagers.

“The King is coming!”Next to him was a child responsible for the wind suddenly shouted.

Sun Chenhao and a few companions were surprised on the faces, and everyone quickly became birds and beasts.As the boss of this small gang, he was not afraid of the school, he was afraid of the teacher in his class, because only Mr. Wang dared to let him stand and would go to his uncle to complain.

“Dad, why don’t you leave school?”

"I'll go," Du Chengzhi asked when he saw Mr. Wang coming over, and he thought about whether he had not said anything about Sun Chenhao's bullying he had just now, but casually perfunctorily.

The reason Du Chengzhi did not want to tell the teacher was not because he was afraid of Sun Chenhao, if it was not the teacher just now, he would probably fight the bad boys next time.

After saying goodbye to the teacher, Du Chengzhi returned to the classroom with a depressed face to carry his packed back of his school bag on his back and walked to the school gate.

The remaining sand in the clothes should have made him feel a little uncomfortable, Du Chengzhi looked back to the place where Sun Chenhao had bullied himself just now, and the figure of the few guys could no longer be seen in his sight.

At the gate of the school, a car was parked there, and the driver of the car saw the boy running towards the car, and the face of the underground car greeted the past.

"Uncle Qi Jin, help me to teach a person," the car driver did not expect the boy to run over the first sentence is to let himself go to hit people.However, for the orders of the three generations of the Sun family, he has always only been obedient, and he knows in his heart that when he is obedient, the Sun family will not be less of his own benefits.

"Just that boy," Sun Chenhao pointed to Du Chengzhi, who was about to walk out of the school door.

Qi entered a nod, he saw that the target was only a child, and his heart was sometimes helpless, but since the young master of the Sun family had spoken, he had no choice.

Qi Jin went to Du Chengzhi, and when he was still some distance away from him, he suddenly kicked a small stone on the ground.

The stone flew past Du Chengzhi's face, the speed was not said quickly, and the determination of the timing was also in place.

No one seemed to notice the movement he had just made, and the stone that had flown out suddenly.