The use of science and technology to carry out investigations and solve cases has actually been going on in Heaven, but it has to go through a strict approval process. However, in view of the changes in the means of criminals in some developed coastal areas, the public security organs in some developed coastal areas have long been exploring and using mobile phones and their information technology to carry out investigations, and have achieved good results with half the effort, but inland or underdeveloped provinces have not yet done this work, not to mention the county-level public security organs in these places, and even the provincial-level public security organs have not yet formally carried out the practice. Therefore, Hong Lifei suddenly saw that Yang Qianfeng of the Jinshui County Public Security Bureau, which was in a typical inland province and had relatively backward economic conditions, boldly put forward this investigation idea, and he was of course very excited.

However, all along, the public security organs have used science and technology to investigate and solve cases, only as a means of investigation, and some audio-visual materials related to crimes obtained have not yet been directly used as evidence; with the development of the situation and the progress of science and technology, the laws of the Kingdom of Heaven have been fully taken into account when they were formulated, for example, the 1996 Criminal Procedure Law clearly stipulates that audio-visual materials are one of the evidences, but electronic materials have not yet been incorporated into the law as evidence. Yang Qianfeng believes that in the near future, electronic data will definitely be included in the law as evidence. Therefore, Zhang Lihua and others used these mobile phone information to find out the suspect, but the information itself cannot be directly used as evidence, and can only serve the investigation.

Zhang Lihua and Xu Yan led three investigators of the criminal police team of the Sunshine Responsibility Area to work for two days and two nights, and then screened the information in the primary selection, and further determined the key points in the screened information to screen one by one, and after screening, the owners of five mobile phones were found to be suspicious, and after further investigation, three suspicious mobile phones were ruled out, and the suspicion of the owners of the remaining two mobile phones rising rapidly. This made Hong Lifei, Zhang Lihua and Xu Yan and others excited, and Shi Lei temporarily forgot that this investigation idea was proposed by Yang Qianfeng, and happily personally ordered the generals to arrange for two groups of people to go to the residences of the owners of these two mobile phones to conduct landing investigations.

After identifying the two key suspects, Zhang Lihua could no longer hold back the excitement in her heart, and wanted to tell Yang Qianfeng the news and let him share the joy, so she called his home, and the ringtone woke up the sleeping Yang Qianfeng and Chen Laixiang.

Yang Qianfeng to work in the Ming Office, the phone at home rarely rings late at night, Yang Qianfeng and Chen Laixiang have adapted to such a life, they all feel that it is a happy thing to sleep naturally every night, the phone rang once after they slept in the past month, and only after answering the phone did they know that someone had made the wrong call, Yang Qianfeng thought that someone must have made the wrong call this time, he grabbed the phone and fed it, but he didn't expect Zhang Lihua's excited voice to come: "Tell you a good news, maybe we really succeeded this time." ”

When Yang Qianfeng heard this, he knew what she meant, and said happily: "Really? Congratulations, you guys have worked so hard! ”

When Yang Qianfeng got up to answer the phone, Chen Laixiang also got up, and listened to Zhang Lihua say that it was successful, but she didn't know what it meant, and listened to Yang Qianfeng's tone as if he knew, so he asked: "In the middle of the night, what's the matter!" ”

Zhang Lihua heard Chen Laixiang's voice and immediately said: "I'm sorry, I'm so excited to break the dream of the two of you, but I can't control myself, I think I have to tell you as soon as possible, so that you can also share this hard-won joy." ”

Yang Qianfeng said: "It is really not easy to find key suspects with so much data, and it is a manual work. By the way, you have identified a few key points, where are they from? ”

Zhang Lihua said: "Identified two, one is from J City, Xijiang Province, and the other is from Y City, Sujiang Province, although they are in different directions, the distance between the two places and our county is almost far, and they are very similar in terms of time and information analysis, especially this person in J City, Xijiang Province, is a driver and has a private car, and although Sujiang is also a driver, he does not have a private car. ”

Yang Qianfeng said: "Well done, by the way, if you can find out the time when he enters and exits the station at the toll booths along the way, it will be more perfect to retrieve the video data, especially for the interrogation." ”

Zhang Lihua has been busy checking the mobile phone information, and has not considered this problem, after Yang Qianfeng's reminder, he thinks it is very important, and said happily: "Thank you for your concern, you are really like a god, and you will win a thousand miles, if you don't help you come up with ideas, if it weren't for the support of Director Hong Lifei, we will definitely not be able to solve this case." Speaking of this, she suddenly thought of Shi Lei's attitude and reaction that day and said: "By the way, let me tell you something, when I retrieved all the mobile phone information back for analysis that day, Shi Lei thought that we were not doing our job properly and wasting time, and then I heard that it was your idea, he got angry and said that you are nosy, but fortunately, Deputy Director Hong Lifei was present at the time, affirmed this investigation idea, and personally participated in data analysis, Shi Lei finally had to support this, and now that the results are out, he is also in spirit, and he is dancing happily, Probably forgot about you. ”

Yang Qianfeng smiled and said: "I don't care about his attitude towards me at all, as long as it is beneficial to solve the case, I can let you take fewer or no detours, and solving the case as soon as possible is what I want, fortunately, with Hong Lifei's support, I have a clue so quickly, come on, I wish you to catch the murderer as soon as possible." ”

"Don't worry, we'll do our best." After speaking, she stopped and continued: "It seems that He Fenfang didn't see what she wanted in Laixiang that day, and Shi Lei told her the old news as news, which made her feel shameless, I guess she must have talked about Shi Lei, and she didn't talk lightly, so Shi Lei was furious when he heard your name that day, and that expression was the first time I saw it, so scared that I didn't dare to look at him when I buried my head in work, for fear that he wouldn't let us continue to check from this line." ”

Yang Qianfeng said: "Don't talk about him, remember, whether it is from Xijiang Province or Sujiang Province, as long as it is locked, the toll station video of the key nodes of the road must be retrieved." ”

Zhang Lihua nodded vigorously and said loudly: "Yes, resolutely follow the instructions of the leader." After speaking, he whispered: "Tell Laixiang, she is really amazing, she subdued Mrs. He with reason and moderation, I admire her!" ”

Chen Laixiang has actually been listening to the phone, and after listening to Zhang Lihua's words, she happily said in front of the microphone: "Thank you for your praise, don't admire me, I still admire you in my heart!" is so capable, Ma is going to solve a big case again. ”

Yang Qianfeng waited for Chen Laixiang to finish speaking and said: "Don't admire each other, go back to rest early, and do what you need to do on a business trip!" ”

Zhang Lihua laughed and said, "Come to Xiang, do you understand what your Ah Feng means?" I hung up. ”

On the afternoon of the next day, with the great support and cooperation of the Xijiang public security organs, the criminal suspect was successfully arrested, and the case of the murder and the body dumped thousands of miles away were cracked in one fell swoop.