Hu Xizhong, who was wearing a dark gray suit in front of him, was a man in his forties and fifties with a slightly chubby figure and a beard tied to his chin. Although Professor Hu smiled when he said this, he did not feel confused.

As soon as he heard Professor Hu's words, Fu Liangtao knew that Hu Xizhong regarded them as late students who wanted to fish in troubled waters.

"Professor Hu, you misunderstood." Fu Liangtao said, and took out the police appointment card to introduce himself to Pang Jitong and himself, and explained his intentions.

Fu Liangtao took out a photo taken by Xu Jingjia when she was studying for an associate degree from the folder and asked, "Professor Hu, I don't know if you have any impression of this girl?"

Professor Hu then put down the whiteboard brush in his hand and took the photo from Fu Liangtao's hand. He looked at the bright girl in the photo with a sad face and asked, "When was she a student?" …… I think I've seen it...... I don't think I've seen ......."

Fu Liangtao briefly talked about Xu Jingjia's admission to the associate degree and the time she graduated, as well as the later admission to the bachelor's degree in the same subject in the university. However, the additional information provided by Fu Liangtao does not seem to help Professor Hu in his recollection.

"Wait...... You say this girl's name is ...... Xu Jingjia?" Professor Hu asked, pulling out his phone from the inner pocket of his suit. Professor Wu tapped a few times on the screen of his mobile phone and said, "This student has not responded to the school's follow-up survey on her employment status after graduation, so I have sent her an email request to follow her e-CV, but I have never received a reply."

After that, he turned the screen of his mobile phone to Fu Liangtao and showed him the relevant email. Fu Liangtao knew that both post-secondary colleges and universities would provide students and faculty members with school e-mails for communication, so when Fu Liangtao noticed that the e-mail used by Xu Jingjia here was a personal e-mail that he had never seen before, he lowered his head and wrote down the e-mail on the manuscript and asked, "Where did you get this e-mail?"

"Oh...... This should have been left by her when she enrolled in school." Professor Hu said disapprehantly. Seeing that Fu Liangtao finished checking, he wanted to take back his mobile phone.

Pang Jitong said, "That's not right! If that's the case, how could we not have looked at this email address when we just checked Xu Jingjia's student information?"

Pang Jitong reminded Professor Hu of this, and Professor Hu said, "Then this student must have communicated with me by personal email before, you can wait a minute." Professor Wu reopened the email app and looked it up, and then said, "She asked me to be her referee in 2012."

Fu Liangtao took the mobile phone and looked at it, but it was an English text message sent by Xu Jingjia, so he asked, "Is it possible to find out what institution and position she is applying for?"

Fu Liangtao has always been suspicious of Xu Jingjia's confession of working and studying during her four years of college, largely because of her family's confession to her mother-in-law, and the evidence that Xu Jingjia has never been able to find a job. Fu Liangtao didn't expect that there would be relevant clues here in Professor Hu.

I just heard Professor Hu say, "Wait...... You should be able to find it. Because when this type of referrer usually only needs to fill out a form via email, I should be able to find the relevant records."

Before Professor Hu's words fell, Fu Liangtao smiled and said, "It sounds like Professor Hu has a lot of experience as a recommender."

Professor Hu did not deny it, and replied with a relaxed smile, "Of course, recent graduates often can't find a referee when they apply for jobs. That's why I think of me as the course director a lot of the time. When they started school, I made it clear to them that if necessary, just fill in my information......" As he spoke, Professor Hu seemed to have found the relevant email, turned the screen of his mobile phone to Fu Liangtao, and said, "This should be the information you want."

Xu Jingjia applied for a clerical position in a charity kindergarten. After obtaining a copy of the email, they asked Professor Wu a few other related questions.

When Fu Liangtao and Pang Jitong left, Hu Xizhong turned around and continued to wipe the whiteboard. When the two of them walked to the exit above the lecture hall, they suddenly heard Hu Xizhong's voice behind them, and asked, "Is the girl you are talking about very cheerful and smiling?" I also heard Hu Xizhong say, "She always seems to like to sit in the back row of the lecture hall and eat secretly."

After leaving the lecture hall, Fu Liangtao and Pang Jitong went to the Student Consultation Office of the Department of Applied Mathematics of the University to inquire about Xu Jingjia's relevant information, and did a similar investigation to the administrative office of the university.

As it is a work-study programme, students can choose the number of subjects they take in each semester, with a minimum of two subjects and a maximum of five subjects, and most students complete the course in two to six years.

Most of Xu Jingjia's associate degree students completed the course in two or three years, but Xu Jingjia took four full years. In the third school year, Xu Jingjia also suspended school for half a year. In the end, only three classmates left Wang Jiani, Zhang Zhuohua and Xu Xuyao who completed the course at the same time as her, and the rest of the students who graduated at the same time as her were enrolled after her.

Pang Jitong was surprised when he compared the course selection time of Hui Jingjia and her classmates at the university, "Although students have the autonomy to choose subjects, the school has subject selection guidelines, and many subjects are basic and advanced. Most of the students followed this course selection guide. However, Xu Jingjia has not played cards according to the rules since the first school year, and there is no discipline in the selection of subjects, is he not paying attention to these things?"

In addition to this, Xu Jingjia's grades have not been improved since the second year of the associate degree, many subjects are hovering on the verge of passing, and two subjects need to be retaken. There are many factors that have not gone up again, but the need to retake it still makes Fu Liangtao feel unreasonable.

Because the tuition fee for this bachelor's degree program was not cheap, the fee for one subject at that time was 7,500 yuan. Since it is a self-financing course, the government does not subsidize it, and Xu Jingjia has not applied for a loan, which means that all these tuition fees are paid for by her own pocket. Xu Jingjia's family is not wealthy, and she is not allowed to waste such an opportunity.

In the following day, with the help of the Student Consultation Office, Fu received copies of the correspondence, assignments, and group reports from Associate Bachelor Xu Jingjia and various professors during his time at the university. Fu Liangtao noticed that most of Xu Jingjia's group reports were completed by one person.