The next morning, with the help of Director Zhu, he "infiltrated" the department and found the right opportunity to report work one by one.

If you apply for the issuance of equipment, you need to study and study it. After the research, you will decide not to report to the leaders in the department. In short, the leaders of the agency are very busy and are even busier at the end of the year. You can accept the materials first, and then study them when you have time, and let them go back and wait for news.

It is not easy for the leaders of the agency to squeeze out valuable time to listen to reports and receive materials. Who can get such treatment for so many deputy criminal police detachments across the country?

If you want to invite your leader to a meal, the leader may not have time, and you are not qualified to invite someone to dinner. You have done everything you should do, so please ask Director Zhu again, and buy a plane ticket and rush back in a hurry.

"Wife, where are you?"

“In the unit.”

Although he is no longer the manager of the BJ branch, he still enjoys the treatment of the vice president. Li Xiaolei sat in a spacious and bright office, shook his legs and said leisurely: "You don't have time, I can't go back to my hometown. I went to Sihe yesterday and gave the New Year gift. I didn't stay in the unit hotel at night, so I went back to our house. My sister-in-law cleaned up and lived a comfortable stay."

"A golden and silver nest is not as good as my own grass nest, so of course I'm better staying at my own home. I just got off the plane and was on my way to my unit. Will you go back to Nangang today?"

It’s nothing to come back, but it’s a lot of things to come back.

As the "young grandma" of the "carpenter's home", she must fulfill her obligations as a wife and daughter-in-law. Li Xiaolei looked up at the time on the wall clock: "I can't go back today. Your third aunt's fiftieth birthday has been called several times. When she saw her yesterday, she said again, "I want to go to have a meal."

"There are many electric cars in my hometown, be careful on the road."

"If you don't go back to Sihe, my third aunt's family has just bought a house. Now she lives in the county town, and she is in the same community as Secretary Lu. After dinner, she stays in the unit hotel and returns to Nangang early tomorrow morning."

With many relatives, people's relationships are naturally indispensable.

My parents and sisters and brother-in-law have no time, so she has become the "family leader". Now she is responsible for all these things, and she enjoys it.

"Okay, look at the arrangement." Han Bo smiled and hung up his phone.

When I went to the Public Security Bureau, the taxi driver couldn't figure out the passenger's identity and dared not take a detour. It was much faster than taking an airport bus and then taking a taxi. It happened to be off work when I arrived at the technical brigade.

Instructor Wei Shaowen and deputy captain Chen Qiwen were standing at the door and talking. When they saw their boss, they all came up to him: "Captain Han, how can you take a taxi? Call us a call to arrange a car to pick you up at the airport."

"Captain Han, you are back just in time. Dr. Tian is doing an experiment and will have dinner together later."

The old classmate stayed until two or three in the morning yesterday and continued to test it early this morning. Until he got on the plane, the murderer's DNA was still not detected.

Unable to make phone calls on the plane, Han Bo was anxious and put his suitcase in the corner of the hall and asked anxiously: "Instructor, Chen Da, are there any evidences in Donggang's murder?"

"It was detected, and it was just detected, and Dr. Tian is confirming it."

While accompanying him to the laboratory, Chen Qiwen asked excitedly: "The deceased was indeed raped, but the murderer left very little semen. Lao Lu and Jiaqi went to investigate the scene together. They even suspected that the murderer had worn condoms. Dr. Tian repeatedly tested and finally extracted it from the examination material in the afternoon."

"Checked out?"

"Not only the essence-spots, they were also extracted from the gloves and compared. Team South Korea had to accept it. It was a micro-test."

Just check it out, Han Bo breathed a sigh of relief. He walked into the locker room, picked a white coat that he should be able to wear, took off his coat and asked, "Is there any result in police dog tracking?"

"No, how could it be."

Chen Qiwen looked at Tian Xuewen who was concentrating on his work through the glass and smiled bitterly: "Zhang Wenbin's police dog is not reliable at all, and the wind is too strong. After more than ten hours, the number of smells left by the murderer was blown away by the wind. Zhang Wenbin ran with him for the middle of the night, and his legs almost broke, but he found nothing."

He has no confidence in the "dogkeeper", and Han Bo also has no confidence.

The reason why the police dog team was asked to come out of the scene where there was a source of smell was that they wanted to try their luck, and the other was that they and their dogs could not always stay in the police school every day.

"Have the Wei team returned?"

"No, it's still in the task force of Donggang County Bureau."

The first time the DNA laboratory was involved in the actual combat, as an instructor, had to care about the case. Wei Shaowen inquired and introduced: "The task force has not made any progress for the time being, and only found out the identity of adults and children. The adult is called Sun Jingshu, 29 years old, from the 13th Group of Huaduo Village, Chengdong Town, Donggang County, who works as an accountant in the town nursing home. The child is called Liu Shuang, his nickname is Shuangshuang, he is five years old this year, and he is very cute during his lifetime.

Her husband is Liu Xiangguo, a salesperson in a business in the town. He has a good business and good family conditions. The couple is loving and has no conflicts. The afternoon before yesterday, the family of three went to a colleague's house in the town for a wedding banquet. After the wedding banquet, several colleagues took Liu Xiangguo to the unit to play mahjong.

All salesmen were smoking and in a mess. The child was going to kindergarten the next day. Sun Jingshu took the child home as usual, but she didn't expect that this was a road of no return. Liu Xiangguo played mahjong until dawn and slept in the unit. The police from Donggang County Bureau found him and found out that his wife and children were both killed at night."

"After attending someone's wedding, I have to go back to the funeral, it's so joyful and sad."

"He is also a big ha. He actually asked his wife to take the children back alone at night. But then again, Donggang's security has always been good. Under normal circumstances, there will be no problems when walking at night."

"It's a pity that I'm encountering an abnormal situation." Han Bo patted his thighs and stood up and said, "I'll go in and take a look. You two, don't wait. I'll take Dr. Tian out for dinner."

"Okay, then let's get off work first."

There are three people in the laboratory, Li Jiaqi and Xiao Xu are working as assistants for Tian Xuewen.

The old comrade was too involved and was unaware of his arrival. Han Bo did not want to disturb him, so he nodded slightly and picked up the map.

The most troublesome thing was extraction. Tian Xuewen kept changing the test tubes until he put all the test tubes into the inspection tray, and then turned around and noticed that the old classmate was standing behind him.

"Brother Han, what's back?"

"just."

Han Bo was very sorry to ask him to help and let him work overtime continuously. He pointed to the chair in the corner and asked him to rest for a while. He went to work and quickly tapped the keyboard a few times, then turned around and asked, "Why is the murderer left so little semen, and he almost couldn't detect it."

"Maybe it's too nervous, and this kind of thing varies from person to person." When a big girl talked about these things in person, Tian Xuewen felt a little embarrassed.

Li Jiaqi was indeed embarrassed and turned her back without saying a word.

It is important to solve the case. Han Bo didn't care about so much and pondered: "Why did the murderer forcefully rape? Isn't it just to vent his wild desires and to gain sensory pleasure. He may be nervous, not possible, but it will definitely be nervous, but this should not affect ejaculation. You three all study medicine. Can you guess the approximate age of the murderer?"

Tian Xuewen held the back of the chair and smiled: "I am a doctor, but not forensic doctor. Don't ask me about such a professional question."

There is not much time to spend with the "Young Marshal". Xiao Xu wanted to leave a good impression on the leader and blurted out: "Captain South Korea, young people have a lot of semen and old people have little semen, but I feel that people in their seventies and eighties cannot do such a thing. And at the same time, they can't control a woman in their twenties and a child, and even an old man can't do it."

"It has been determined that it was a single person committing the crime?"

"It can be basically judged."

This question can be answered. Li Jiaqi turned around and said, "The scene was full of withered weeds, and the footprints were not extracted, but they were well protected and the traces of a fight could be seen. It should be a single person. From the gloves left by the murderer, he should have a bicycle or motorcycle like the victim. It may be a follower or a coincidence."

In winter, if you ride a bicycle or motorcycle without wearing gloves, it will freeze your hands. Therefore, the victim wore gloves until he died and failed to extract the murderer's dander from the cracks of his fingernails.

Engaged in DNA testing cannot be limited to what to send. You must understand the case, be familiar with the relevant situation on site, and carry out necessary on-site process reconstruction based on the relevant characteristics of the inspection materials, restore the original state of each relevant physical evidence, imagine where the DNA may be left, and then extract and inspect in a targeted manner.

Otherwise, it is very easy to miss inspection or delay.

Han Bo pondered for a moment and suddenly said, "Jiaqi, describe the scene to me again."

"Captain Han, I can't explain it clearly. I'll draw a picture for you."

"OK."

Li Jiaqi took out paper and pen, and introduced it while drawing, and had a rough understanding of the case and the scene. The results of the second test also came out. The gloves were indeed left by the murderer!

Han Bo picked up the gloves containing the evidence bag and looked at it, took out his cell phone to dial the number "Lao Shuai".

"Wei Detachment, Han Bo, just came back to report an important situation. Through the secondary inspection of the sample extracted from the victim's body, it can be confirmed that the gloves found on the scene were left by the murderer."

It is much easier to get the DNA evidence of the murderer.

Wei Guoqiang was very excited, smiled at Director Zhang Baoli, held his cell phone tightly and said, "That's great, this is good news, a breakthrough progress! We are organizing police investigations. Once the results are released, as long as there is a suspicion, all blood will be drawn and sent to compare.

Xiao Han, you have a lot of work to do next. Dr. Tian is hurrying to rest. There are only 5 days left before New Year's Day, and the murder case resolution rate this year is involved. Donggang County Bureau is under pressure, but our municipal bureau is under pressure. Bureau Chen and Bureau Cui require us to investigate and solve quickly. Once the inspection materials are delivered, you have no time to rest."

"The reason why the Wei Detachment was delayed until now was that the murderer left very little semen, and the dandruff on the gloves was also trace evidence, which was more troublesome to extract."

Han Bo and Tian Xuewen looked at each other and then said, "In comparison, testing and testing the suspect's blood is much easier and more efficient. Dr. Tian and I, one day shift and the other night shift, were staggered, and people stopped the instruments and made every effort to ensure the handling of the case and never delay the task force's investigation."

…………………………………………
Chapter completed!