Li Qin walked to the female victim and introduced, "Ren Lingling, this is Captain Han of the Second Squadron of our city's Criminal Investigation Brigade. I want to get some information with you."

Ren Lingling slowly raised her head, her eyes were already crying and swollen, and she choked up, "Captain Han, have you caught the murderer of my boyfriend?"

This question made Han Bin a little speechless. The suspect had long since run away. As the only witness, you haven't recorded you yet. Where can I find the murderer?

Even if Holmes is alive, he must first understand the situation.

Considering that the other party was stimulated and his mental state was not very good, Han Bin still said in a warm voice, “I just took over the case and is still investigating. In order to learn more clues about the murderer, we want to make a note for you first.

Ren Lingling pursed her lips and said nothing.

"How is your health now? Can you make a transcript?"

Ren Lingling nodded slightly.

Han Bin thought for a while and said, "Ms. Ren, please tell me the story first."

Ren Lingling was silent for a moment, and said, "My name is Ren Lingling and my boyfriend is Ma Jinlu. We are students of Qindao Business School, and we both rented a house outside. He went out on business last night. I was alone at home. Later... the murderer broke in and he bullied me. When I woke up, I found that my boyfriend was lying on the ground with blood all over..."

"I'm too scared. How could this happen to me? We both agreed to get married after graduation, but... he died."

Han Bin asked, "How many people are the murderers?"

"I just saw one."

"Remember the looks and characteristics of the murderer?"

Ren Lingling shook her head, "I was waiting for my boyfriend to come back. I was a little sleepy while waiting. I was going to sleep first. Only a wall lamp was left, and the light was not very good. And the murderer was wearing silk stockings on his head. Can't see what it looks like."

"What about the clothes?"

"I wore a black T-shirt on the upper body, a very ordinary kind, and a pair of pants underneath. I can't remember what kind of it."

"What about your height?"

"I can't remember, I was terrified."

"Remember carefully."

"Probably the height of my boyfriend, about 1.8 meters."

"How did the murderer get into the house?"

Ren Lingling's voice was a little flustered, "I don't know. When I heard the movement, he had already entered the house."

Li Qin said, "Miss Ren, I know it would be very uncomfortable for you to recall the incident, but you are the only witness at the scene, and only you can help us catch the suspect."

Ren Lingling was silent for a while, "I was in a daze at the time and didn't hear the door sound, but a vague sound was heard, like the sound of opening a window."

The suspect is likely to come in through the window, which is similar to what Han Bin saw from the scene.

"When Ma Jinlu died, didn't you hear anything?"

"I was knocked out by the bad guy, I don't know anything."

"Why did Ma Jinlu come back so late that night? Is he usually like this?"

"It's not usually like that. He said that there was something to do at school and he had to come back later. I asked him something, but he wouldn't say it. In fact, he didn't say that I knew that I would either go out for a drink or play games together. What else? "

"Will you remember carefully, do you have any other impressions of that murderer?"

Ren Lingling shook her head again.

Han Bin changed his question, "Then you describe the situation after waking up."

"I woke up...found that I was lying on the bed, my clothes were broken, and I was also..." Ren Lingling said and cried.

Li Qin handed her some tissues.

Ren Lingling wiped her tears and took a deep breath. "I found a coat to put on, and I walked out of the bedroom with the courage, and saw a person lying on the ground covered in blood. I was frightened... It's my boyfriend."

"I ran over and hugged his head and found that he was out of breath... I called the police."

"Later I was sent to the hospital."

Han Bin asked, "After you woke up, did you move anything in the house or clean up everything?"

"No, I was so scared that I couldn't care about anything."

"When did the murderer enter your house?"

"It should be past ten o'clock."

"What time do you report?"

"It seems to be past eleven o'clock."

Han Bin wrote in his notebook, "Since you two are students, why don't you live in school, but rent an apartment outside?"

"It's my boyfriend's idea."

"What is missing in your house?"

Ren Lingling shook her head and said, "I don't know. I was so scared that I couldn't take care of it."

"Are there any valuables in the house?"

"There are more than a thousand cash, and a gold necklace of mine, and a mobile phone. The rest is nothing."

"When you were in contact with the murderer, did you resist and leave some scars on the other side?"

Ren Lingling bit her lip, "He has a knife in his hand, I didn't dare to resist."

"What kind of knife?"

Ren Lingling recalled, “It was a sharp knife with a blade of more than ten centimeters long, which looked like a fruit knife.”

"Do you two live in the rented house every day?"

"I don't know, I sometimes live in school."

"Have there been any abnormalities before?"

"No."

"For the murderer, do you suspect anyone?"

"No. I'm still a student, I didn't expect to encounter such a thing. I don't know how to live in the future." Ren Lingling said and cried again.

Han Bin asked again, Ren Lingling just cried and shook her head, feeling a little broken.

Helpless, Han Bin had to leave the house first.

When the three of them left the house, Li Qin suggested, "Team Han, do you want to inform Ren Lingling's family, she is in a bad mood, I'm afraid she won't think about it."

"Yes, but before her family members come, you just stare."

"Team Korea, her injury is no longer a serious problem, and staying in the hospital is not a problem. Do you think I should take her to school or go to the hotel to open a room."

"Look at her personal wishes." Han Bin exhorted a few more words before returning to the city bureau with Bao Xing.

Li Qin stayed to take care of Ren Lingling.

On the way back, Han Bin frowned in thought while sitting in the passenger seat.

Bao Xing asked, "Team Korea, what do you think?"

"I'm wondering what was the purpose of the murderer's crime? Theft, fitness, or murder?"

It is speculated from the situation at the scene that the murderer was probably a burglary, which evolved into a strong and murderous person.

However, judging from the injuries on the deceased, the murderer wanted to kill the other person. According to Ren Lingling, the murderer was wearing a mask and the light was dim. She did not see clearly the appearance and characteristics of the murderer.

It stands to reason that if it's just a theft, the murderer only needs to stabbing Ma Jinlu, there is no need to stabbing him to death.

If killing people is the fundamental purpose of the murderer, then the traces of the on-site theft may have been deliberately left by the murderer in order to confuse the police and hide the real motive.

Generally speaking, a person has to kill one person, and the two people should know each other before they can have such a big enmity.