Behind the emergence of every unreasonable event, there is a far-sighted plan.

Xu Lang only learned about the problem they encountered after asking Du Ziqiao about them.

After seeing Zhang Minhao's body in the 19th incident, they went to retrieve Zhang Minhao's archives as soon as possible, however, to everyone's expectations, Zhang Minhao's archives in the police force were all artificially destroyed, and the time of destruction was on the 18th, that is, before the 19th case.

The file of a police officer was destroyed, this is not an ordinary thing, Tian Yongchun immediately contacted Xie Haiqing and asked Xie Haiqing on the phone what was going on, however, Xie Haiqing was also in a state of confusion, and he didn't know what was going on.

Later, after finding the police officer on duty at the police station on the 18th, after some inquiry, I learned that Zhang Minhao went to the archives when he was on the 18th, and also went to Xie Haiqing's office, but Xie Haiqing was not in the office at that time, Zhang Minhao stayed in Xie Haiqing's office for more than an hour and did not come out, and everyone else thought that Zhang Minhao was looking for Xie Haiqing to have something important, so they didn't think much about it, after all, Zhang Minhao only made a meritorious contribution not long ago.

The text files of the archives have not been destroyed, which is understandable, after all, as Zhang Minhao, if you go to the archives to find a random reason, you can take these files away, but the information on the official website within the public security system has also been destroyed, according to the records of destruction, it was Xie Haiqing who destroyed it, and Xie Haiqing was not in the office at all at that time, and he was dealing with a civil dispute outside, many people saw it, and there was a full alibi, which shows that someone has authority as Xie Haiqing's police station director, Deleted Zhang Minhao's archives.

And those who entered and exited Xie Haiqing's office at that time, except for a few people from the police station, only Zhang Minhao himself, and those who entered and exited Xie Haiqing's office all conducted an investigation and did not find any abnormal situation in them, which can rule out suspicion, Zhang Minhao's suspicion is the greatest, and the files that happened to be deleted are Zhang Minhao's own, which is enough to show that the person who deleted and destroyed the files is Zhang Minhao himself, which also shows from the side that Zhang Minhao had prepared all this as early as before the 19th case, otherwise, Why did he delete and destroy the files?

When Du Ziqiao and the others investigated Zhang Minhao, in addition to finding that his files in the police force had been artificially destroyed, his files in the school were gone, except for the files of the police academy.

When he went to Zhang Minhao's police academy, he retrieved Zhang Minhao's file information from the school and found that Zhang Minhao's performance in the school was average, not outstanding, otherwise, he would not have been assigned to work in the police station after graduation.

The police found Zhang Minhao's former homeroom teacher and teacher, after some questioning, they didn't have any impression of Zhang Minhao, they felt that he was just an ordinary student, no different from other students, not late for class, no failure in exams, no disciplinary violations, and normal behavior, in the final analysis, he was an ordinary student, nothing special.

The police found a student at the same time as Zhang Minhao, after some understanding, they don't have much impression of Zhang Minhao, according to their memories, Zhang Minhao is a person who is not very gregarious, does not like to play with others, likes to be alone, when he was in school, he has never been in love, although Zhang Minhao is among students, not very gregarious, but, he is not annoying, he is the kind of person who is easy to be ignored.

After this investigation, no useful clues were found, so the police prepared to go to Zhang Minhao's former high school, primary school and junior high school to inquire about the situation according to the records on the school file.

However, when the police found Zhang Minhao's previous school, the school's response was that Zhang Minhao's information was taken away after he entered the police academy, and the person who took Zhang Minhao's information claimed to be the leader of the police academy, and they arranged a top-secret task for Zhang Minhao to take away these materials, and the leaders of the school gave these materials to the other party after seeing the documents taken out by the other party.

After the police inquired about the leader's name and ID number, they found that it was a fake name, and there was no teacher at the school where Zhang Minhao studied, and there was no leader at all, and there was no name of this person in the public security system of S City.

After investigating here, Du Ziqiao and the others felt that Zhang Minhao was becoming more and more unsimple, but the archives about him were either destroyed or taken away in advance, making it impossible for the police to investigate.

At this time, Du Ziqiao thought of Zhang Minhao's ID card and household registration, according to the information on the ID card, Zhang Minhao is a native of S City, and his household registration is in a rural area under S City, this village is very remote, and it is almost out of the jurisdiction of S City.

So, Du Ziqiao immediately asked people to go to Zhang Minhao's place of residence to investigate, however, after some investigation, there was indeed a person named Zhang Minhao in this village, who was about the same age as Zhang Minhao.

Zhang Minhao's father is called Zhang Kaifeng, he is an outsider, Zhang Minhao's mother is from the village, in the early years, because the village is relatively poor, many young people went out to work, and Zhang Minhao's mother also went out at that time, but not long after she went out, she came back, and she came back with a big belly, and there was a man who came back with her, and this man was Zhang Kaifeng.

The woman's belly is big, although the woman's family is more opposed to this marriage, because they don't know the man, but they finally agreed to this family business, so the two of them set up a banquet in the village and got married, but because of Zhang Kaifeng's household registration problem, they did not go to the Civil Affairs Bureau to handle the marriage-marriage-certificate, and because the village is relatively remote, the people in the village are more realistic, and they don't care too much about it.

Soon after marriage, Zhang Minhao was born, a boy, which is a good thing for their family, however, when Zhang Minhao was about three years old, his mother died in the mountains behind the village because of an accident, according to the people in the village, Zhang Minhao's mother in order to go up the mountain to do farm work, but suddenly it rained, Zhang Minhao's mother failed to come down in time, encountered a landslide, died on the mountain, and she died with two women.

After the woman's death, everyone had no other thoughts except grief and regret, after all, the days still had to go on, and Zhang Kaifeng suddenly disappeared with Zhang Minhao one night after handling the woman's funeral, and as for where he went, no one knows.

At the beginning, everyone thought that Zhang Kaifeng was returning to his hometown with his son, but the woman's family didn't think so, according to what they said, when Zhang Kaifeng came to the village, he told them that he was a person, his parents died early, he had no brothers and sisters, and no other relatives, so when Zhang Kaifeng got married, he settled in the village, and Zhang Minhao's household registration was also in the village.

The woman's sudden death, as well as Zhang Kaifeng's farewell with his son, made the villagers begin to suspect that the woman's death may not be an accident, and it is likely that she was murdered by Zhang Kaifeng, but the woman's body has been buried, the matter has passed, and no one knows the answer.

As time passed, the days passed, and soon, the people in the village forgot the existence of the father and son, if it weren't for the police suddenly coming to the village to look for information about Zhang Minhao, they would have long ago remembered that there was such a person.

The police got a total of several useful clues in the village.

First, Zhang Minhao was indeed born in S City, his father's name is Zhang Kaifeng, and his mother is a local in the village, and their family has settled here for many years, and they are all authentic farmers, so there is no suspicion.

Second, Zhang Minhao was taken away by Zhang Kaifeng when he was about three years old, as for where he went, what he did, and what Zhang Minhao experienced, no one knows.

Third, the death of Zhang Minhao's mother may not be an accident, the villagers' speculation may be true, however, the woman has been dead for twenty-one years, and the body has already turned into a pile of white bones, even if the case is re-investigated, it is estimated that nothing will be found.

The police asked some relevant information about Zhang Minhao and Zhang Kaifeng in the village, but there were few clues, and more than 20 years have passed, and many people who are familiar with Zhang Kaifeng are no longer there, even if the people who are still there, they are not deeply impressed by Zhang Kaifeng, and they cannot provide useful information, so the police have no choice but to leave the village and return to the city.

After returning to the city, the investigators sent this information to Du Ziqiao, and Du Ziqiao immediately asked people to find a person named Zhang Kaifeng in the population file.

However, Huaxia is so big, there are so many people, there are many people called Zhang Kaifeng or homonyms, after some screening, there are many people who meet the age, and they can't be found out at all, and although Zhang Kaifeng has settled in the village, however, the countryside is not like a city, and ID cards are needed, and Zhang Kaifeng has never used ID cards in the village at all, whether he is really called Zhang Kaifeng, where is the place of household registration, these are impossible to verify, and even, whether he really calls Zhang Kaifeng the name is not necessarily.

The investigation of Zhang Minhao has reached here, and there are no clues at all.

Just when Du Ziqiao was worried about this matter, a police officer from the second criminal investigation team reminded Du Ziqiao that in the file file of their investigation of Zhang Minhao at the police academy, there was a family contact person's name, named Sun Kaifeng, with the other party's contact information and home address on it.

So, Du Ziqiao immediately asked people to investigate according to this clue, but the results of the investigation surprised Du Ziqiao and others.

The results of this investigation were just learned by Du Ziqiao before he came to the hospital to visit Xu Lang.

"What are the findings?" When Xu Lang heard this, he was also curious, and hurriedly asked.

"Guess who this Sun Kaifeng is?"

Du Ziqiao did not immediately answer Xu Lang's question, but bought a pass and asked.

Xu Lang frowned, looked at the expression on his face that you would never guess, and asked tentatively, "Could this person be someone I know?" ”

Du Ziqiao nodded, looked at Xu Lang and said, "Yes." ”

"Someone I know? Who could that be? ”

Xu Lang thought about all the people he knew, but he still didn't come up with a reason, mainly because Du Ziqiao gave too little information, and Xu Lang couldn't judge, so he looked at Du Ziqiao and asked, "Just say it, who is it?" ”

"Sun Wenyao."

Hearing the name Sun Wenyao, Xu Lang was stunned on the spot and didn't come back to his senses for a long time.

"You can't guess, do you?" Du Ziqiao looked at Xu Lang and said.

Xu Lang nodded subconsciously, indeed, he thought about everyone, but he didn't think of Sun Wenyao, but he thought of Sun Wenyao, who was once good friends with Xu Yuan, Lu Ye, and Ye Zhenhai.

"How could it be him?" Xu Lang asked, with this sentence, he seemed to be asking Du Ziqiao, and he seemed to be asking himself.

Du Ziqiao shook his head and said, "I didn't expect that Zhang Minhao's guardian would be Sun Wenyao, I was also surprised when I learned the news, and my expression was even more exaggerated than you are now." ”

However, Xu Lang was not listening to what Du Ziqiao said at the moment, he fell into deep thought.

Sun Wenyao, Ye Zhenhai and Xu Lang's father Xu Yuan, the three of them are best friends and best partners, Lu Ye also got very close to Xu Yuan later, Xu Yuan was five years old when Xu Lang was five years old, because he was accused of killing his wife Zhang Lan, and he was imprisoned, and finally, he committed suicide in prison, and Ye Zhenhai also had an accident before Xu Yuan's accident, Ye Zhenhai was dead at that time, but, as it turned out, he did not die, but survived, and has been hiding in a dark corner, paying attention to Xu Lang and ' Master Chang's dynamics of this organization, however, more than six years ago, before that incident, Ye Zhenhai also died, and Sun Wenyao left the province before Ye Zhenhai appeared, and then disappeared.

In the end, Xu Lang and their subordinates determined that Sun Wenyao was the person who was 'Master Chang', and the people who knew Sun Wenyao's past, except for Xu Yuan and Ye Zhenhai, only Lu Ye was left, of course, there were Sun Wenyao's former colleagues, but Xu Yuan and Ye Zhenhai, who knew Sun Wenyao best, were dead, and Lu Ye didn't know too much about Sun Wenyao's situation, and as for Sun Wenyao's colleagues, they knew even less information, so in the end, the investigation about Sun Wenyao was over.

However, after more than six years, when this name appeared in Xu Lang's field of vision again, it was related to the current series of cases, he himself did not appear, but Zhang Minhao who had a relationship with him appeared, so the question is, what is the relationship between Sun Wenyao and Zhang Minhao?

Thinking of this, Xu Lang came back to his senses, looked at Du Ziqiao and asked, "What is the relationship between Sun Wenyao and Zhang Minhao?" Could it be that Sun Wenyao is Zhang Kaifeng? ”

Du Ziqiao shook his head and said: "What is the relationship between them is still under further investigation, but it is certain that Sun Wenyao is not Zhang Kaifeng, Zhang Minhao's father is someone else." ”

"What did you all find?" Xu Lang asked.

Du Ziqiao shook his head and said: "I haven't investigated too many useful clues, according to the memories of Sun Wenyao's former neighbors, Sun Wenyao did adopt a boy in the years before he disappeared, as for what the boy's name is and what he looks like, they don't know." ”

"Aren't they curious?" Xu Lang asked with a frown.

Du Ziqiao nodded and said: "Curious, of course some people are curious, but, you also know, Sun Wenyao is a forensic doctor, and there are many people who know that he is a forensic doctor, no one likes to deal with doctors, especially forensic doctors, after all, forensic doctors deal with dead people, they don't have much contact with Sun Wenyao, and Sun Wenyao is not the kind of person who likes to deal with people, it seems that people who are engaged in the forensic profession are like this, except for being curious and occasionally discussing a few words in private, they don't pay attention to this matter." ”

Du Ziqiao's words made Xu Lang nod, indeed, the forensic profession is relatively mysterious for most people, but a profession to stay away from, and forensic people have more or less eccentric personalities, aside from Sun Wenyao himself, the forensic doctors Xu Lang knows, whether it is Ye Xuefei, Qin Mingyue, or Shen Minxue, their personalities are all more eccentric, there is a feeling that no one should enter, cold, Shen Minxue is a little better, the performance is not so obvious, and Ye Xuefei and Qin Mingyue are very obvious, In addition to acting like a normal person in front of Xu Lang, Ye Xuefei is like that when facing other people, even if the other party is a director like Lu Ye, he is like that, cold, not to mention Qin Mingyue, after he came to CSY, there was not much communication with Xu Lang, except for the matter of the case and the corpse, there was no communication between each other at other times.

What is the relationship between Zhang Minhao and Sun Wenyao, now that Zhang Minhao is dead, and Sun Wenyao is missing, whether he is alive or dead, no one knows, the name Sun Wenyao has never appeared in Xu Lang's field of vision, however, no matter what the relationship between them is, one thing is certain, since Zhang Minhao has a relationship with Sun Wenyao, Sun Wenyao is the person of 'Master Chang', and Zhang Minhao is Sun Wenyao's adopted child, then, Zhang Minhao is' Master Chang's identity can be basically determined.

In addition to this point that can determine that Zhang Minhao is the person who is 'Master Chang', another point is that the forensic doctor conducted an autopsy and autopsy on Zhang Minhao's body, and found a scar at the position of the tiger's mouth on his left hand.