Zhang Lei sent someone to the library that night to look through it, but he didn't find the agreement, and there was a great possibility of losing it, because in the circulation of books, someone might throw them away as waste paper.

However, Zhang Lei was still unwilling, although it involved secrecy, Zhou Xuan had a deeper understanding of Duan Chen, if the agreement was still there, then Zhou Xuan might still find it.

After thinking about it again and again, Zhang Lei still asked the police to drive behind Zhou Xuan, and when he heard two horns, Zhou Xuan turned his head and found that Zhang Lei was sitting in the passenger seat and waving at him.

"Miao Miao, let the second brother send you back first, don't go to work today, and rest at home for a few days." Zhou Xuan said.

"I also look down on people's life and death, but work can make me more focused, I'll wait for you in the company." Miao Lin said

Waiting for Miao Lin to leave, Zhou Xuan took out his mobile phone to call Yu Jiangzhou again, Miao Lin's current state is not very good, don't let her be too tired, try to share more. There is still something to explain, but before he finished speaking, Zhang Lei stuffed him into the car, frowned, and said: "Okay, look at your worries!" ”

"Hehe, why is Team Leader Zhang worrying about it, and you have to bring me, who likes to worry about it?" Zhou Xuan asked.

Zhang Lei explained the cause and effect, emphasizing that this agreement has not been found at present, and they have been busy all night and checked all the "Zizhi Tongjian" that has not been lent, but they have not found it.

Duan Chen still chose to believe the police in the end, Zhou Xuan was very relieved in his heart, raised his eyes and looked at the police officer driving in front of him, Zhang Lei blurted out, "Reliable, my own people, our director's brother-in-law!" ”

"Hey, boss, I got into the bureau with the first place after graduation! It was also through layers of selection that he came to the serious crime team. The officer was upset and turned around and shouted.

"That's what I mean, you see you young people are sensitive." Zhang Lei reprimanded.

"What do you have to bring my brother-in-law for, everyone sounds ambiguous!" The police are still struggling with this matter.

"Besides, you're still on duty tonight!"

"Hehe, my sister made something delicious, let me come over at night."

"Stinky boy, it's not like you're using your family to press me!"

It was quite an interesting little follower, Zhou Xuan put his mind at ease, and rushed to the library of Linhai University to discuss the possibility of this agreement with Zhang Lei. The university is a group of intellectuals, and there is an agreement in the book that the students who borrow the books will not throw them away, and even if they can't find them, they can investigate and find out some information.

In addition, the books selected by Duan Chen are either the most circulated editions, or they have been placed on the shelves for many years and no one cares, so they need to ask the librarian to call up the borrowing records.

Also, to do this, Duan Chen may not come forward in person, Zhanying is her most credible person, and it is very likely that she will lend it back to her operation. However, the books in the library of Linhai University are open to all teachers and students, and they are free of charge, and do not provide public welfare. Therefore, the person who actually operates this should be a staff member or a student at the school.

Linhai University graduates tens of thousands of people every year, and the population flow is extremely large, and it is not easy to find this person.

There is another possibility, that is, someone forged the student ID, and the previous student ID card of Linhai University was a small book, and there was no chip storage, so it could also be fooled.

Listening to Zhou Xuan's analysis so much, Zhang Lei was a little annoyed, but the police officer who was driving laughed: "Boss, no wonder you always want to dig up Dong Zhou, it's very organized!" ”

Zhang Lei snorted and said unceremoniously: "His name is Zhou Xuan, that is, he has been dealing with criminals for a long time, and he has to have a long memory!" ”

"You can't make fun of other people's names, Team Leader Zhang, if you do this again, I'll get off!" Zhou Xuan pretended to be angry.

"Hehe, I'm not with you!" Zhang Lei said with a smile.

"Team Leader Zhang, are you going with me, I won't drive anymore!" The police also took the opportunity to make a fuss.

"If you don't open it, get out, you have to come over this weekend to work overtime, no one's brother-in-law is useless!"

"There are still rich people with status."

"You say it again?"

"Hehe, the boss hurts us the most, and I won't dare to do it again."

When I arrived at Linhai University, I was stopped at the school gate because there were no police lights, but as soon as I saw Zhou Xuan still sitting in the car, the doorman immediately greeted him with a smile and let him go in without leaving any documents.

Zhang Lei grinned, didn't say anything, turned the corner to the library, parked the car steadily, Zhang Lei and Zhou Xuan got out of the car one after another.

"Zhou Xuan, if you don't say hello to Principal Yan, let's come here to investigate, but keep it secret." Zhang Lei said.

"There's no need to bother the headmaster for this little thing." Zhou Xuan didn't agree.

"Then how do we investigate, Linda is not opened by the Public Security Bureau."

Zhang Lei was a little anxious, and he made a phone call, and he saw that Zhou Xuan was twisted. In fact, the county official is not as good as the current management, as soon as he saw Zhou Xuan coming, a middle-aged woman who still had charm immediately smiled and beckoned.

"Auntie, how are you doing?" Zhou Xuan asked.

"Good, all good. Kid, I know you're busy, and I didn't dare to ask, there's nothing uncomfortable about coming back from space, right? ”

"Everything is fine, didn't Katsuo tell you?"

"That bear child, every day like a * bucket, our mother and mother quarrel as soon as they talk, and they are about to become enemies." Pei Yaru complained a few words, saw that she was still following the living, and asked again: "Xiao Xuan, is there something wrong?" ”

"Auntie, this is Team Leader Zhang of the Serious Crime Team, I came to investigate some things, and I ask you to cooperate and pay attention to confidentiality." Zhou Xuan said.

"Oh, Team Leader Zhang, I often hear Shengnan mention you, saying that you are like a god, and you are selfless!" Pei Yaru immediately gave a thumbs up and shouted.

Being praised by the beauty makes people feel happy, Zhang Lei wrote lightly: "It's all for the public's business, who let us eat this bowl of rice!" ”

"Hehe, as soon as I heard these two sentences, I knew that Team Leader Zhang was a bright person. Team Leader Zhang, if there is anything we need to cooperate with, just say! ”

I have to say that after several years of experience, Pei Yaru has gotten rid of the image of a housewife who did not dare to go on the street alone, and has become confident and generous, and knows how to speak to make people happy.

Pei Yaru is just an ordinary employee here, but she still reported the matter to the curator, who was on a business trip and asked her to cooperate with the police investigation.

"Auntie, can you retrieve all the borrowing records of the "Zizhi Tongjian" in the past six years?" Zhou Xuan asked.

"Okay, wait a minute."

Pei Yaru skillfully entered the title of the book into the system, and soon more than 20 pages of records came out, Zhang Lei hurriedly went over to check it, and asked: "Can you export this record?" ”

"Yes."

After exporting, sorted according to the conditions, in fact, the borrowing records of these books are almost the same, and one of them is called Zhan Huihui's borrowing records, which attracted Zhang Lei's attention.

This is a male student in the Department of Mathematics, who had graduated the year before last, and retrieved his personal borrowing records, and found that the books he borrowed were all professional mathematics books, and occasionally read novels, and there were only this one of the famous books, and there were five times before and after, three of which were concentrated in two days.