After Xu Lang left the office, Tian Yongchun was still sitting in front of the sofa, looking at the cup of tea that Xu Lang had just put on the coffee table, he was stunned for a long time, and he didn't come back to his senses for a long time.

I don't know how long it took, Tian Yongchun got up from the sofa, walked behind the desk, picked up a mobile phone, dialed a number, and the phone rang three times before it was connected.

"Old leader, Xu Lang is back."

"I already know." A majestic voice came from the other end of the line.

"Old leader, Xu Lang is the only one left in the Xu family, he will come back this time, it will be more dangerous than before, I think, isn't it ......?"

"Yongchun, I know what you're worried about, but, what I want to tell you is that everyone has their own mission, and he Xu Lang is the same, since he chose to come back this time, it means that he is ready, Xu Lang is a very smart young man, I believe in him, the country believes in him, you should believe in him."

Tian Yongchun was silent for a long time before he said, "Old leader, I know. ”

Just when Tian Yongchun was about to hang up the phone, a voice rang on the other end of the phone again, and said: "Yongchun, you are now the director of the Public Security Bureau in S City, and you are the leader of that kid, you have to take care of him, don't let him have an accident, we owe them too much." ”

"Don't worry, old leader, I know how to do it."

"So be it."

The phone hung up, and after Tian Yongchun put down the phone, he fell into contemplation again, he frowned, and there seemed to be an indissoluble sorrow between his eyebrows.

————

After Xu Lang walked out of Tian Yongchun's office, he opened the file bag, which contained the documents of the criminal investigation consultant of Xu Lang's S City Public Security Headquarters, as well as a mobile phone, Xu Lang looked at the familiar documents, his expression was very solemn, and finally, Xu Lang took a deep breath and strode towards the office of Du Ziqiao of the second criminal investigation team.

When Xu Lang came to Du Ziqiao's office, Du Ziqiao was sitting behind the desk, and after seeing Xu Lang come in, he didn't get up, but just said to Xu Lang: "Sit casually." ”

Xu Lang didn't say anything polite to Du Ziqiao, walked straight to Du Ziqiao and sat down, and then put the document bag in his hand on the table, and looked at the layout in Du Ziqiao's office.

Du Ziqiao naturally saw the document bag in Xu Lang's hand, he put down the pen in his hand, raised his head, looked at Xu Lang and asked, "What is this?" ”

Xu Lang did not shy away from Du Ziqiao, and directly took out the criminal investigation consultant's certificate, threw it in front of Du Ziqiao, and said, "See for yourself." ”

Du Ziqiao picked up the documents and looked at them, then looked at Xu Lang, smiled, and said, "Congratulations, the official has been reinstated." ”

Xu Lang pursed his lips and was noncommittal about this.

Xu Lang's pouting action was learned from Xiao Yueyue.

In fact, Du Ziqiao knew that Xu Lang was not the kind of person who particularly cared about his identity, but he also knew that after Xu Lang had this certificate, it was much easier to do things and investigate the case, and he also knew that although Xu Lang resigned from the position of criminal investigation consultant five years ago, the public security system has always reserved this position for Xu Lang, and every year, the part of the allowance about Xu Lang was transferred to Xu Lang's account, but Xu Lang has not used it once in these years.

After Du Ziqiao returned the documents to Xu Lang, he looked at Xu Lang and asked, "I heard that you were invited to the police station for tea just after returning to S City, is it true?" ”

These days, Xu Lang has been busy with things after returning to S City, and he is not in the mood to think about those things, and when he heard Du Ziqiao mention this matter, he nodded and said, "There is such a thing." ”

"Tell me more about what the hell is going on." Du Ziqiao asked curiously.

Xu Lang didn't want to say it, but, under Du Ziqiao's repeated requests, Xu Lang simply told the murder case on the train, and Du Ziqiao also frowned after listening to it, and said: "This case doesn't look simple, the murder on the train is very difficult to investigate, and it is estimated that the case will not be solved for a while." ”

Xu Lang nodded, knowing that Du Ziqiao was right, this case happened on the train, although Zhang Kaiji was killed after the train arrived in S City, but Zhang Huazhi was not killed in S City, and where was Zhang Huazhi killed, Xu Lang doesn't know how the police are investigating now, but it is estimated that the investigation will be a little troublesome.

However, Xu Lang has no energy to take care of this case for the time being, if every case needs Xu Lang to participate, then Xu Lang is estimated to be busy, he raised his head, looked at Du Ziqiao with some confusion and asked, "Why did you remember to ask this?" ”

Du Ziqiao shook his head with a wry smile and said, "When the Chengdong Criminal Investigation Detachment was investigating, it encountered a problem, and it has already asked us for support again. ”

Xu Lang asked curiously, "What kind of problem?" The Chengdong Criminal Investigation Detachment would actually ask for support from the Second Criminal Investigation Team? ”

"Zhang Haonan is dead." Du Ziqiao said helplessly.

"Zhang Haonan?"

Xu Lang frowned, he felt a little familiar when he heard this name, but he couldn't remember where he had heard this name for a while.

Du Ziqiao saw that Xu Lang was a little puzzled, so he explained: "It's the person who was in the box where the murder occurred, on the lower bunk opposite Zhang Kaiji." ”

Hearing Du Ziqiao say this, Xu Lang suddenly remembered who Zhang Haonan was, so he asked, "How did you die?" Where did he die? ”

"After the murder of the train, our police contacted the police in Qiyang City, Zhang Haonan's hometown, and with the cooperation of the police there, they found Zhang Haonan's home and found that Zhang Haonan had been killed the day before the murder."

"Did you find the suspect?" Xu Lang asked.

Du Ziqiao shook his head.

Xu Lang frowned tightly and fell into deep thought, Zhang Haonan, Zhang Kaiji, Zhang Huazhi, three men and women surnamed Zhang, were actually killed at about the same time, there must be a problem with this, Zhang Kaiji and Zhang Huazhi are husband and wife, this Xu Lang already knew when he entered the police station at the railway station, then, what is the relationship between Zhang Haonan and this couple, Xu Lang doesn't know yet, but since the three people have been killed one after another, then, there must be some kind of connection between these three people, so Xu Lang asked:" What is the relationship between Zhang Haonan and Zhang Kaiji and Zhang Huazhi? ”

After Du Ziqiao lowered his head and flipped through the documents on the table, he raised his head and looked at Xu Lang and said, "Zhang Haonan is Zhang Huazhi's younger brother, that is, Zhang Kaiji's eldest brother. ”

"Is there any contradiction between them?" Xu Lang asked.

"The police in Qiyang City are still investigating."

Xu Lang nodded, and then, Xu Lang remembered one thing, so he asked, "By the way, did you find the woman I saw on the train at the beginning?" ”

Du Ziqiao shook his head and said: "Although the Chengdong Criminal Investigation Detachment found the waiter and the attendant on the train at the time according to your description, and learned some information to prove that there is indeed such a woman, but they don't know what the woman's name is and where she went after getting off the train." ”

Xu Lang was a little disappointed, but Xu Lang became more and more interested in the woman who asked for cigarettes for him and gave Xiao Yueyue tissues in the bathroom, but now the police have not found the other party, and Xu Lang has no better way.

After the two of them were silent for a while, Xu Lang suddenly remembered something and asked, "By the way, I found some flesh and skin tissue suspected to be the murderer in the cracks of Zhang Kaiji's fingernails, did the test results come out?" ”

"The test results are in."

"How?" Xu Lang hurriedly asked.

"According to the results of the laboratory tests, these skin and flesh tissues are not the open hands of the deceased."

"That must have been left behind by the murderer." Xu Lang said.

Du Ziqiao nodded, agreeing with Xu Lang's statement, and he continued: "However, the police searched the DNA database and did not find the data that matched. ”

"Didn't find it?" Xu Lang raised his eyebrows.

Du Ziqiao nodded, and said helplessly: "Yes, I didn't find it." ”

Hearing Du Ziqiao say this, Xu Lang first felt that it was a little impossible, with the economic development and social reform of Huaxia, the police database has been very sound, however, compared with the DNA database, the fingerprint database is more complete, after all, now the country has implemented the second generation of ID cards, everyone needs to record fingerprints when applying for ID cards, and because of this, the police database is so complete, but the DNA database is different.

The DNA database is still based on those special people with bad criminal records, and it has not yet reached the point where people all over the country have file records in the DNA archives, which has brought certain trouble to the police when solving cases, but compared with the past, it is still much more convenient.

Du Ziqiao saw that Xu Lang was still thinking about the murder on the train, so Du Ziqiao smiled and said, "Okay, you don't have to worry about this matter, the Chengdong Criminal Investigation Detachment and the police in Qiyang City will handle it." ”

Hearing Du Ziqiao say this, Xu Lang thought about it and felt that it was also, so he didn't think about it, after all, he didn't see those archives now, and the results of the police investigation, even if Xu Lang wanted to intervene, it was difficult for a clever woman to drink without rice.

After Du Ziqiao saw Xu Lang come back to his senses, his expression became serious, he looked at Xu Lang and asked, "You came back this time for Director Lu's case, right?" ”

mentioned Lu Ye, Xu Lang instantly put all the other messy things in his mind behind him, and asked directly: "How is the investigation of the case?" ”

Du Ziqiao frowned, shook his head helplessly, and said, "There is no progress for the time being, and there is another ......."

Xu Lang saw Du Ziqiao's expression of embarrassment, so he asked, "What else?" ”

"In addition, the higher-ups are very concerned about this case, and our second criminal investigation team is under great pressure, and there has always been controversy about whether Director Lu was murdered or died unexpectedly."

"It's murder." Xu Lang said in a very firm tone.

"Are you so sure?" Du Ziqiao asked curiously.

Xu Lang nodded and said, "I have been to the scene of the murder, and I know the old man's recent situation very well over the years, and it is impossible for him to die for no reason." ”

Du Ziqiao knew the relationship between Xu Lang and Lu Ye, and he knew very well what Xu Lang was thinking in his heart, so he took out a piece of paper from the drawer, handed it to Xu Lang and said, "Look at this." ”

"What is this?"

After Xu Lang took it, he asked while looking.

"You'll know when you see it."

Xu Lang took a look and found that this was the latest death report on Lu Ye's body, and the results on it were similar to what Xu Lang had seen in the autopsy room before, but, in the end, the forensic doctor gave a speculation that Lu Ye was suspected of dying from fright, and when Xu Lang saw this, he didn't need to ask to know that this must be Shen Minxue's masterpiece.

Xu Lang did not show an angry expression like in the dissection room, but after putting down the autopsy report, he looked at Du Ziqiao and asked, "What do you think of this autopsy report?" ”

Du Ziqiao looked at Xu Lang's face, thought for a while, and said, "Theoretically, this is the most reasonable explanation. ”

Xu Lang nodded, knowing that Shen Minxue's speculation was actually very possible, and Xu Lang actually agreed with it, but Xu Lang was still a little uncomfortable in his heart and had a lot of questions.

What kind of person Lu Ye is, whether it is Xu Lang or Du Ziqiao, or Ning Yanran, they are all clear, not to mention whether Lu Ye has heart disease, it is not so easy to scare a person to death, of course, there are also people who have died from excessive fright, and there are not a few, but these people are all very timid, or people with heart disease, and who is Lu Ye?

An old policeman who has been fighting on the front line of public security for nearly 40 years, what kind of scene have you never seen? What kind of things have not been experienced, Xu Lang really can't think of what happened to scare an experienced old policeman with no heart disease to death, this doesn't make sense in theory, of course, there are exceptions, if Lu Ye really died of arrhythmia and cardiac arrest because of excessive fright, then, what did Lu Ye experience at that time? This is the key to determining Lu Ye's death.

Thinking of this, Xu Lang asked, "About that strange phone call, and how is the strange man's investigation?" ”

Du Ziqiao was not surprised that Xu Lang knew this, he shook his head and said: "The clue of the mobile phone card has been broken, and the investigation about that strange man is already a bit eyebrow-raising. ”

"Oh, what did you find?" Xu Lang hurriedly asked.

However, to Xu Lang's surprise, Du Ziqiao shook his head and said, "Lu Xing is still investigating this matter, he told me yesterday that he has found something, but he hasn't told me what he has found." ”

"What about the Lu Xingren?" Xu Lang asked.

"He went to the Chengxi Public Security Bureau, and it is estimated that he will not be back until tomorrow."

Xu Lang was stunned for a moment, and then nodded, no wonder he didn't see Lu Xing in the office area of the second criminal investigation team just now.

Xu Lang thought for a while, and said, "Since I have come back, then you can show me all the archives of the old man, and I want to know the specific situation." ”

"That's fine." Du Ziqiao said without hesitation.

After Du Ziqiao finished saying this, he raised his wrist and looked at the watch on his wrist, it was already noon, Du Ziqiao stood up and said to Xu Lang: "It's lunch time, let's be hungry, let's go out for a meal together." ”

Xu Lang did not refuse, and the two of them walked out of Du Ziqiao's office.

"Where to eat? Is it a cafeteria or an outside restaurant? Du Ziqiao asked.

Xu Lang thought for a while and said, "Let's go to the cafeteria." ”

Du Ziqiao shook his head, put his arm around Xu Lang's shoulders and said, "Today is the first day you come back to work, how can you eat in the cafeteria, let's go eat outside." ”

After saying this, Du Ziqiao didn't care whether Xu Lang agreed or not, so he pulled Xu Lang out of the Public Security Bureau and came to a nearby restaurant.

Because they had to go to work in the afternoon, neither of them asked for wine, just eating food and chatting.

During the meal, Du Ziqiao knew some things about Xu Lang in Zhuxi County in the past few years, and Xu Lang also knew how Du Ziqiao, after serving as the captain of the second criminal investigation team, reorganized a criminal investigation team that had suffered a heavy blow and was almost gone, and developed to the current scale, although both of them said it was an understatement, but Xu Lang knew that Du Ziqiao must have had an easy time in the past five years, at least, it was very troublesome and laborious to re-establish the second criminal investigation team.

Xu Lang and Du Ziqiao are not the kind of sentimental people, they don't feel too much emotion about these things, after all, the second criminal investigation team has recovered its previous grandeur, and it is better than when Xu Lang was there, which is enough, and Xu Lang and Du Ziqiao get together again, and they are about to partner up to do things, which is a very good thing for both of them.

After eating, the two of them returned to the second criminal investigation team, Du Ziqiao asked people to send all the files about Lu Ye's case to his office, and Xu Lang sat in his place and began to look through the boring and boring information, after all, the death of a former director of the Public Security Bureau is not a trivial matter, and there are naturally a lot of investigation materials, which are all placed on Du Ziqiao's desk, completely blocking Xu Lang's figure.

Du Ziqiao has other things to do, and it is impossible for the second criminal investigation team to only investigate Lu Ye's case, after preparing all the things that Xu Lang wanted, Du Ziqiao left the office area of the second criminal investigation team with people, leaving Xu Lang alone in the office to read these archives and investigation reports.