"But all of the above is our speculation, tomorrow the University of Europe will come to study, and the students should be back almost as soon as possible. You hurry up to the school, look for the students on the floor of the crime, and see if any of them can describe to us: the situation at 123o3 on the night of the crime. Although the people in this dormitory don't get along with each other very well. But there is a clear contradiction, that is, Qin Jianping and Ren Haichao. We need to quickly find the girl they chased together and find out what was going on. In addition, the other two people in the dormitory, Jiang Zhiwen and Xu Xiaolong, have not been found so far, and I don't know if they absconded in fear of crime or have also been unfortunately killed, but now that we have their DNA, the investigation work is much easier. In short, we have to find these two people as soon as possible, and we are obedient. ”

“yes，sir。 Guaranteed completion of the task. The crowd replied.

Now that the work has been arranged, the members of the Serious Crime Team have begun to act separately. The next day, Jiang Chonglang and Han Yu came to Ou University again and came to the 112 dormitory of the case, and they first found the building manager who was downstairs.

When asked about the situation on the day of the case, the building manager shook his head and said: "It was the last day before the holiday, so the management was particularly lax, because most of the students went home with their luggage in the afternoon, and there was only one person left in some dormitories, so some people called their classmates in other dormitories, and some simply called their girlfriends over." And that night, the reception room was very hot, so I went outside to cool off, so I didn't pay attention to the strangers who came to the dormitory that day. ”

However, the building manager still found the surveillance video at the door of the 12th dormitory on the day of the two people's case and the two of them. After the two of them watched the video carefully, it appeared: Qin Jianping came back at 8oo in the evening, an hour and a half later, that is, after 93o, Ren Haichao came back, and then about 4o minutes later, at 1o1o, Liu Xinzhuo came back, and then less than 1o minutes, Tao Jialin also came back.

However, on the video, Jiang Chonglang noticed that Liu Xinzhuo seemed to be holding something in his hand, wrapped in a black plastic bag, and he didn't want people to see it, and when Tao Jialin seemed to come in, he seemed to be sneaky, turning back step by step, as if he was afraid that the people next to him would see it.

The police also learned that among the six people in the dormitory, only Tao Jialin was from this province, but it was also a four-hour train ride from Yangcheng to the city where his home was located. On the Internet, the police officers Tao Jialin had already booked a train ticket for 3oo that afternoon, and he was supposed to go home that afternoon, but he didn't know why he didn't make it, and he was killed in the dormitory. The other 5 people were all from other places, and most of the train tickets they booked were on the 16th and 17th, so they didn't leave the school on the night of the 15th.

On the evening of the 15th, most of the student buildings had already left the school, and the students who did not leave the school either went out to the Internet café to stay overnight, or went to the hotel with their partners to consume their hormones, and only a small number of students who were struggling to live in the dormitory chose to stay in the dormitory.

The 123O3 dormitory is at the very edge of the floor, and it is opposite the toilet. Therefore, students who want to go to the toilet will pay attention to this dormitory when they pass by, and a student named Wang Ming provided such a clue to the police: "On the night of the 15th, I was left alone in the dormitory. When I went to the bathroom, I heard the sound of an argument in the 3o3 dormitory opposite, in fact, we didn't have a life in the dormitory. But the quarrel was so loud that I didn't think it would be possible to hear it. The reason for their quarrel this time seems to be because of some exchange student, and one of them shouted to the other person, "Come and beat me, come here." For the sake of his own future, he deceived the feelings of other girls. How about it, be careful of getting sick, and die of anger."

"Heart disease" Hearing this word, Jiang Chonglang was shocked: "Do you remember what time it was at that time?" ”

"It's almost ten o'clock, because the big clock in our school will be on time every hour. When they were arguing, the bell was buzzing, so much so that something was said later. I didn't hear a word, and then I left the bathroom and went back to the dorm. ”

"Around ten o'clock, Liu Xinzhuo and Tao Jialin hadn't come back at that time, and the two people arguing in the room should be Qin Jianping and Ren Haichao, didn't the relationship between the two of them deteriorate because they pursued a girl at the same time, this has something to do with exchange students, what does this have to do with exchange students?" Jiang Chonglang thought quickly in his mind.

"Classmate, you just mentioned exchange students, what's going on?"

"Ah, this is this cooperation between our school and some foreign universities, you can go to their school for a year in your sophomore or junior year, and this is different from the previous school of each college."

"Then do you know which of the two of them was recommended by the academy to become an exchange student?"

Wang Ming shook his head: "I'm sorry, we are not from the same academy, if they were students of our academy, if they quarreled like this, we would definitely knock on the door and persuade them, then there would be no such tragedy." ”

After chatting with this classmate Wang Ming, Jiang Chonglang put forward several key words: exchange students, illness, and deception.

With these keywords, Han Yu went to investigate the female classmates of this college again, and proved that in April of last semester: Qin Jianping and Ren Haichao both fell in love with a girl named Yang Yilin at the same time, and pursued him almost at the same time. But for the pursuit of the two people, Yang Yilin refused. Because she has applied for an exchange student to go to the UK this autumn, in addition to her grades, her family also has a certain relationship, so it is very easy for her to become an exchange student.

"Then do you think that Qin Jianping and Ren Haichao pursued Yang Yilin because they fell in love with her family's background and were able to help them go abroad, which was purposeful?"

"At first, she shouldn't have known, but then I don't know who reminded her. She seemed to be aware, so she obviously rejected the entanglement of these two people, and was busy preparing to go abroad wholeheartedly. ”

"Someone reminded her, do you know who it is?"

The girl shook her head, "Irene, last semester, ran to the library almost every day, and she didn't care much about other things. ”

"In addition to Qin Jianping and Ren Haichao, the two suitors, are there any other boys who have a good relationship with Yang Yilin?"

"No, I know."

"Okay, where is she now, has she already gone to England?"

"Probably not, it is said that where school starts, it will be half a month later than we are here, so she should still be at home now."

Hearing her say this, Jiang Chonglang breathed a sigh of relief, as an important witness in this case, if Yang Yilin went to the UK, it would not be easy to find her. Jiang Chonglang came to Yang Yilin's college and asked him to find a way to prevent Yang Yilin from going to the UK immediately, and let her go back to school first.

However, just as Jiang Chonglang was about to leave the dean's office, another familiar name Xu Xiaolong appeared on the list of exchange students of the college this year.

...