"Li Minhui, female, 23 years old, was found dead on the bed in the dormitory half an hour ago by a senior high school girl who came to call her to class, naked in a large font, with strangulation marks on her neck, and tears in her lower body accompanied by irritating unknown fluid. It is inferred that the time of death was between 10:30 and 11:00 last night, and the cause of death was suffocation caused by neck compression. ”

In the room at the end of the 5th floor of the girls' dormitory of Jiahang Experimental Middle School, Forensic Gu stood up with a somewhat strange expression.

The strange object was Officer Xu, who was carefully observing the situation in the room.

As an experienced veteran criminal policeman, shouldn't he first analyze the condition of the deceased when entering the scene of the crime? But Officer Xu only glanced at the deceased at the beginning, and his gaze never fell on her again.

Could it be that there is something more noteworthy in this room?

Gu Forensic Doctor said in his heart, and also began to look around.

The dormitory is four meters wide and six meters long, and the specifications are the same as those of other student dormitories. But perhaps because of the teacher's dedication, the pattern is not the same. The 2x1.8 meter single-storey single bed is placed in a corner, next to which is a full-height log bedside table, and two books are placed on the counter, one by Nietzsche "The Other Side of Good and Evil" and the other is "The Heart of Justice" by Jonathan Haidt. Next to it stands an Internet celebrity table lamp, with a long "O" shaped lamp embedded in the solid wood pipe wall, and the switch is hidden in the lamp holder below. As long as the upper and lower magnetic balls connected to the thin wire are brought close, the magnetic force will pull the switch to turn on the lamp.

"It's a very simple principle, and it's not difficult to make." Officer Xu also looked at the pink table lamp, "But because of its simple and creative design, it is very popular even if the price is not low." ”

"How do you have research on this kind of thing?" Gu asked the forensic doctor.

"Because little girls like the same things." Officer Xu said, "My daughter also bought one some time ago, but this thing looks good but is not practical, and my eyes are tired and panicked after reading a book for a while." ”

"I'll look at something else." He turned, his gaze falling across the bed.

There is a large square table, the most conspicuous thing on the table is a vertical mirror nearly half a meter high and a large photo frame, in which two young people, a man and a woman, hold hands and act intimately. Other things are messy, snacks, miscellaneous items, and makeup items are mixed. Next to the square table, the doors of the brand new solid wood wardrobe are ajar.

Officer Xu opened the drawer under the square table in turn, and the first compartment was stacked with neat underwear, dazzling and dazzling, some of which were still in boxes and unopened. The second Glido is worn on the lower body, stockings and leggings are arranged according to the style.

"Nothing new." He shook his head and reached for the bottom block.

Generally speaking, the bottom drawer is empty, and even the items are infrequently used or unimportant. After all, it's inconvenient to bend over or squat down to pick it up.

But when he opened the third drawer, he was stunned on the spot, and his eyes radiated.

"Well, key evidence has been found." He said.

Doctor Gu poked his head when he heard this, and when he saw the items in the drawer, his expression was full of surprise: "Are young people so open now, there are so many patterns..."

In the middle of the drawer was a long iron box with a four-digit combination lock. Bounded by an iron box, there are all kinds of health toys on the left half, and the right half is full of condoms.

"It seems that this Li Minhui loves her boyfriend very much." Gu forensic doctor said.

"How?"

"Look," Forensic Doctor Gu opened the half-closed first drawer, "intimate clothes are the most conservative style, but this drawer is full of these things, it should have been bought by her boyfriend, right?" ”

"And," he said, pointing to the large picture frame on the table, "she looked at the man with tenderness in her eyes, and a genuine smile on her face, and it seemed that she should live happily." It's a pity, young girl..."

"But Gu Forensics," Officer Xu said suddenly, "have you missed something?" ”

"What?"

"Look at the brand on the last box of condoms."

"Zero sense?" Forensic Doctor Gu's eyes widened, "You mean, this Teacher Li was last night..."

"It's possible that this box of condoms has been opened." Officer Xu took out the box of condoms and opened it, "The box says 6, but you see there are 1, 2, 3, 4, 5, 5 left. ”

"Maybe it's a coincidence, I just used the same brand, and I just happened to use only one."

"It's possible." Officer Xu nodded and pointed to the locked iron box, "So we need to find other evidence." ”

"Birth control pills and cigarettes?" Forensic Doctor Gu's eyes lit up, and the next moment he showed a look of embarrassment, "But this iron box is locked, and the four-digit password is a total of 10,000 combinations, and it will take at least two hours to try one by one, right?" ”

"In fact, if it takes 3 seconds to try a combination, the average time to unlock the combination lock should be 4 hours and 10 minutes, I just did the calculation."

"Probability theory... I wasn't good at it when I was in school, let alone now. Forensic Doctor Gu pondered for a few seconds, "So what now, 4 hours is too long, or I will call the people in the team to come up and forcibly break it." ”

"Don't worry, forcibly breaking it may destroy some key evidence." Officer Xu approached the combination lock, "Generally speaking, people set passwords that have special meaning to them. ”

"Such as birthdays, graduation days, wedding anniversaries?" Gu Forensic came closer, took a cursory look at the table, and then took out a small LV satchel from under the snacks, "Oh, it's a luxury item!" It seems that this Teacher Li has a good family background, or that her boyfriend treats her well. ”

"It could be that other men are willing to spend money."

"What do you mean?"

"Don't worry about what you mean," Officer Xu urged, "let's hurry up and see if there are any ID cards or other digital-related items in there." ”

Forensic Doctor Gu nodded and threw the contents of the satchel to the ground.

Wipes, lipstick, round mirrors, wallets, not many things but just useful.

Gu forensic doctor dug out his ID card and several bank cards from his wallet, as well as a piece of cardboard that had been folded several times.

It seemed to be a letter.

"What age is it that you still write letters?" Gu Forensic Medicine was a little incredulous.

"I guess it came with some small gift." Officer Xu said.

The two of them opened the letter paper, and several lines of hard text jumped into their eyes.

"Dear,

Although this is your first week on the job, it is a great feeling, but it is a shame that I can't go to school on the weekend to share that joy with you. The company's decision-making mistakes have led to a tight capital chain, and it has not been paid wages for two months, and it is destitute. I bought the Tom Ford lipstick that you had been thinking about and hoped it would replace me and give you encouragement and warmth.

I love you the most,

September 10th. ”

"Looks like it's her boyfriend." Forensic Doctor Gu folded the letter again and put it in his wallet, "Team Xu is really like a god, and you can see that the letter was not sent on purpose." ”

"If it's useful, try the 0421 combination. Oh, and 1021, 9710, 9321, 3658. ”

As he spoke, Officer Xu pulled out his ID card from his wallet, which showed that Li Minhui was born on October 21, 97. As for 3658, it is naturally the last four digits of the ID card.

"None of them are right." Half a minute later, Forensic Doctor Gu shook his head, his expression full of regret.

"Then try the last four digits of the mobile phone number 7729, the contact information that Xiaoxin found from the dormitory management downstairs."

"Still not right."

"As for graduation day, college students usually graduate in late June every year, so you try them one by one. In addition, I remember that Jiahang Experimental Middle School recruited internship classrooms in mid to late August, so I also tried it. ”

"Neither is right, none is right." Five minutes later, Forensic Gu stood up straight and shook his head impatiently.

"Perhaps..."After a moment of silence, Officer Xu turned his gaze to the half-hidden, unexplored wardrobe, "There may be something in here that can remind us." ”