"Why did Yang Yujie climb onto the high-voltage tower?" Qiao Yan was quite troubled by this.

"Yang Yujie has a fear of heights." Wei Chihong told Qiao Yan the results of the investigation, "The people around Yang Yujie said that she didn't dare to take the transparent elevator, nor did she dare to stand on the balcony of the high-rise, and it was hard to imagine that she would climb to the high-voltage tower, and she climbed up in high heels." ”

"Then the prisoner must have forced her to do it." The vague portrait in Qiao Yan's mind gradually became clear.

"Could the prisoner be a researcher at a university?" Wei Chihong remembered the guess Cao Chongshan had made before.

"I'm more inclined to have the prisoner an operator who uses the technology directly." Qiao Yan analyzed, "Jing Junbai pays great attention to his image, but the prisoner forced him to go crazy in public, and his image was ruined and died." Similarly, Yang Yujie had a fear of heights, but the prisoners forced her to climb the high-voltage tower in high heels, and fell off the tower after the explosion. The fact that the prisoner forces the victim to do what they hate the most and is most reluctant to do shows that the prisoner is likely to be not recognized in society and is quite unhappy about it. And in order to show off his skills, this kind of person usually improves the bomb of the previous time and uses it for the next crime, that is, the crime will escalate, and soon he will take a third action. The prisoner is a rather strange person, and as long as he can find common ground between the two cases, he can roughly determine the identity of the murderer. ”

Wei Chihong nodded in agreement. "The common denominator that may exist at the moment is Yin Xinyue's suicide. The fake ruby found in Jing Junbai's trouser pocket is exactly the same as the one on the ring left to her by Yin Xinyue's mother, there must be something related to it. ”

"Boss." Lu Bin came to report the latest investigation results, "found the suspected criminal's Weibo, after Jing Junbai and Yang Yujie were killed, he updated Weibo, saying that he executed another scumbag, and both times detailed the situation at the crime scene." After checking the ID, the login account is a free mailbox, and the identity cannot be identified. In addition to posting criminal information, the man also released criminal notices, and the day before the two crimes, he claimed that someone was about to be executed by him, and replied to netizens' comments from time to time. Weibo content is posted on mobile phones, and it is too scattered to pinpoint the specific location of the person who posted it. The number of followers on Weibo has been growing dramatically, and many people who are afraid of chaos are very excited about it, and praise the prisoners as heroes.

All areas of microblogging are shown on the big screen. Lu Bin said that the locations were very scattered, and in order not to leave evidence, the prisoners randomly chose the location to post on Weibo.

"It is impossible for people to create randomness. Even if you try to distract your vision with random actions, there must be a pattern to follow. As long as the underlying pattern is analyzed, the next location of the crime can be predicted. Qiao Yan asserted, "Computer experts can do this."

Wanxing should have this ability, but she ...... now"

Wei Chihong nodded thoughtfully. "There's another master I know, I'll see if I can get her."

"Oh, you mean Ling Lingyao." Lu Bin understood, "Boss, I'm optimistic about you." If you really can't do it, you can use a beautiful man's trick, and she will definitely fall under your suit pants. ”

As soon as the words came out, he was naturally blinded by Wei Chihong. Then Lu Bin also realized that it was inappropriate to say such things in front of Qiao Yan, and when he thought of Qiao Ran saying that Zhuo Zhenqin did not agree that Yu Chihong and Qiao Yan were together, he was a little ashamed and shut up and stopped talking.

"Ling Lingyao is a computer expert?" Qiao Yan didn't know about Ling Lingyao, last time she only knew that someone posted rumors on the Internet, and later because of the turmoil at home, she and Wei Chihong were in contact with each other, and she didn't know anything about the rest of the matter.

Wei Chihong told Qiao Yan about Ling Lingyao. Qiao Yan was also surprised.

Wei Chihong smiled and asked, "Have you seen Jin Yong's "Dragon Babu"? ”

Lu Bin has naturally seen it, Qiao Yan has also seen it, where there are Chinese, there is Jin Yong.

Yu Chihong felt that Ling Lingyao was like a sweeping monk in "Dragon Babu".

"You're exalting her too much." Lu Bin still has a deep prejudice against Ling Lingyao.

Qiao Yan was noncommittal, how high her skills were, she had to speak with facts. "Do you need to let Qiao Ran come forward and help persuade you?"

Yu Chihong shook his head. "If that's the case, she should laugh at the police for being too useless, and they have to work the people."

Yu Chihong went to the family hotel on Zhulang Island again, Ling Lingyao was still busy at the front desk, and she didn't rest during the Spring Festival. "I didn't break any more laws, did I?" This was the first thing she said after meeting Yu Chihong.

"Don't be like a hedgehog, covered in thorns." Wei Chihong and Yan Yuese, "I came to you today to ask you for a favor, my subordinates lack high-end computer talents like you, so I can only ask for foreign help." ”

Ling Lingyao's face showed a look of surprise. "You mean, you want me to help investigate the case?"

"Yes." Wei Chihong replied affirmatively, "We want to catch a criminal, and we need the assistance of a computer master." ”

"Aren't you afraid that I will leak secrets and ruin your job?" The corners of Ling Lingyao's mouth carried a thick, self-deprecating meaning.

Yu Chihong smiled indifferently. "Don't use suspicious people, don't use suspicious people."

Ling Lingyao looked at him, her eyes were deep and strange. "Don't forget how my father died, I don't do things for the enemy."

"It's ridiculously stupid for you to say something like that." Wei Chihong refuted mercilessly, "This is not to do things for anyone, but to do your part to catch criminals and rescue victims." Your decision is directly related to the lives of a person, or even more, just as it was in your father's day. Besides, what you did before has tarnished your father's reputation, and the career that your father was proud of all his life has been trampled on by you, and this is a great opportunity to redeem his reputation. Your father has worked hard to cultivate you and sent you to study abroad, not in the hope that you can inherit his career,"

Ling Lingyao looked at Yu Chihong, he was heroic and majestic, but he was a little melancholy. Something soft was throbbing in her heart, but she remained stubbornly silent.

"Don't look bitter and hateful." Wei Chihong frowned slightly, and his voice was calm, "Let hatred blind you, you will lose your nature, hurt others and yourself, I have seen too many people like this, I don't want you to be like them." That kind of life is just a tragedy. You're still young, you still have a chance to choose again, and the decision is entirely up to you whether you want to end up in tragedy or comedy. I've said everything I can say, if you don't want to, I can't force you to do it with a knife, you can think about it yourself. ”

He turned and walked to the door. Ling Lingyao gritted her teeth, raised her chin, and rushed straight in front of him. "I agree to assist in the investigation." Her eyes stopped on his face faintly, "I'm not that great, and I don't want to inherit my father's career." I was only persuaded by you, and I agreed because of you. ”

Yu Chihong smiled. Ling Lingyao was stunned, she had to admit that his smile was very moving, this man was very good, for the first time in her life, she was confused by a man's smile.

But Wei Chihong quickly put away his smile. "Whatever the reason, I accept it. Thank you for your cooperation. ”

Ling Lingyao's heart was full of loss, he was so stingy with his smile, when he was with his girlfriend, it shouldn't be like this, right?

Qiao Yan and Zeng Jinling screened the video footage at the scene of Yang Yujie's murder and the surveillance video near the time of Jing Junbai's murder, and they found that among the crowds watching the excitement at the scene of the two crimes, a person wearing a white windbreaker and a hood appeared, they thought it was the same person, but they couldn't see the face clearly. Wei Chihong brought Ling Lingyao into the Public Security Bureau and arranged a computer for her in the Criminal Science and Technology Laboratory. After Ling Lingyao enlarged the image using the approximate figure geometry in mathematics, she clearly saw the face of the person in the white trench coat, and confirmed that it was the same person who appeared at the scene of the two crimes.

After investigation, it was learned that the man's name was Hu Likun, and he was the technical backbone of a large chemical plant in the city, which was about to be swallowed up by a company, and he was facing a layoff crisis. Hu Likun is 45 years old this year, 1.69 meters tall, and his age, height and occupation are consistent with the previous recording analysis of Lu Xipeng and Qiao Yan's portrait analysis, but Hu Likun's whereabouts are unknown, and people in the factory said that he returned to his hometown for the New Year. In fact, he did not return to his hometown, but appeared at the scene of two crimes.

Ling Lingyao lived up to Wei Chihong's expectations for her, she used geographic information system (GIS, geographic information system, a discipline developed with the development of geographic science, computer technology, remote sensing technology and information science) to track the location of the mobile phone that posted Weibo, and then used mathematical formulas to calculate the location, and then overlapped the probability distribution of the spatial movement pattern and the time series change pattern to predict the time and place of the next crime. It was the evening of the 10th day of the first lunar month, and the location was within 500 meters of the train station.

On the afternoon of the 10th day of the first lunar month, Wei Chihong held a meeting and made comprehensive arrangements to protect the victims and arrest the prisoners at the location of the next crime speculated by Ling Lingyao. Many people have doubts about Ling Lingyao's predictions, especially Fu Yiming and Duan Zhiming, who have always advocated down-to-earth investigations, and their acceptance of criminal portraits has improved, but they are still quite reluctant to predict locations, especially non-insiders like Ling Lingyao. Wei Chi Hongli overrode public opinion and insisted on his proposition.