On the night of the ninth day after the murder in the dormitory, the suspect Zhang Jinchuan was caught in the bus. Since the murder case, he has been hiding until now, and he wanted to go out to avoid the limelight when he returned home today to ask his parents for money, but he didn't expect to be arrested halfway. When the policeman appeared in front of him suddenly, he was extremely frightened and afraid that he would be shot, and he spoke so eloquently that he cried bitterly on the spot.

According to Zhang Jinchuan's confession, he met a certain girl in the dormitory through the Internet, that is, Li Hui. They started dating online, but they didn't meet in person or through video. After a month of online dating, Zhang Jinchuan found that he had completely fallen in love with this girl. So, he often gave her gifts, and took out half of his monthly living expenses for her to use, which can be said to be all his energy.

Finally, two people who have been dating online for more than 3 months met at Li Hui's Chuanyin School on the evening of September 24. Unexpectedly, Li Hui saw him short and ugly in front of him, and proposed to break up, but he disagreed, and he even knelt down and begged her to give him a chance. But Li Hui not only did not change his mind, but also insulted him unbearably. At that time, Zhang Jinchuan also threatened: "I will definitely kill you!" Li Hui thought that he was just scaring himself, and he didn't pay attention to it at all. Zhang Jinchuan wanted to take revenge because of this, and he remembered that she had told him online that she was in the 7403B dormitory. So, he went to the city to buy a sharp knife and returned to Li Hui's school.

In fact, he hesitated for a long time, and until more than 5 o'clock in the morning on the 25th, he had not decided whether to make a move, and he was also very afraid. So, hesitantly, he took out his mobile phone and entered the QQ space, intending to make the final redemption, but unexpectedly, he saw Li Huifa and said: "It's really a lazy toad who wants to eat swan meat, and he looks so ugly and comes out to swagger and pretend to be big, no wonder he has been refusing to video with me, it turns out that he doesn't dare to meet people!" It's really ugly and weird! After reading it, he was so angry that he immediately picked up a knife and rushed straight to the 7403B dormitory.

However, when he climbed up to the second floor, he suddenly saw a figure running through the door and leaving, and he didn't think so much about it at the time, so he began to look for Li Hui. Through the light in the hallway of the dormitory, he was surprised to find that the girls in the dormitory were all dead! All of them are lying motionless in pools of blood! He was so frightened that he threw down the knife in his hand, and in a panic, he fled the same way as the burglar window and hid.

Coincidentally, Li Hui went out with friends that night, and it was almost time to return to school, and the dormitory gate had been closed and he couldn't enter. So, she surfed the Internet in the Internet café and did not come back, and she escaped by luck.

The police were taken aback by his remarks, some said that he made them up in order to get rid of the crime, and some said that there might be other hidden secrets.

Later, the police took Li Hui to the police station again for questioning. According to her confession, she did know Zhang Jinchuan and insulted him. But she didn't expect it to be so serious, and she didn't expect him to really come to kill someone. She was sure that the murderer must be Zhang Jinchuan, because he was the most suspicious. The police arrested Zhang Jinchuan because of her confession before, but now Zhang Jinchuan said that he was not the murderer, and the person was dead before he came, what is going on? Is he lying, or is there something else really going on? However, the knife with Zhang Jinchuan's fingerprints on it did match the wound suffered by the victim. Moreover, there were no other people's fingerprints at the scene except for Zhang Jinchuan's fingerprints and the fingerprints of the female students in the dormitory. Now, all the evidence points to Zhang Jinchuan, but why does he desperately deny it?