Out of the elevator door, Qin Gang looked at the time on his phone, there was still a minute left to 9:30, and he was quite satisfied with his prediction of time.

Li Yi pulled Qin Gang into the stairwell and told him to listen quietly at the door of Feng Hui's room, pay attention to the noise in the room, and if he heard someone preparing to come out, he would go to the elevator and wait.

Wait for the people in the house to come out and get on the elevator together, let the person who comes out of the house press the elevator first, find a way to follow him, if the person goes downstairs and leaves the apartment, there is no need to follow him again.

If the person does not leave, but stays in the neighborhood, continue to follow, remember to take pictures.

During the whole process, he sent a message to himself at any time, and he also changed his methods and Feng Hui at any time, trying not to let Feng Hui notice before he was sure of anything.

Qin Gang took the order and quietly walked to the door of Feng Hui's room, not daring to come out, pricking up his ears.

Li Yi dialed Feng Hui's phone in the stairwell and told her that the police found a mobile phone in a box at the scene of 1503, which may belong to Ye Mengyin, the case is more urgent, and Feng Hui is needed to help identify it, the two of them are good friends, Feng Hui may know the boot code, and she and her colleagues are almost at the apartment, delaying her for a few minutes.

If it's inconvenient for her, Li Yi can just deal with it in the corridor without entering her room.

Feng Hui did not refuse.

Qin Gang vaguely heard Feng Hui's voice at the door of the room, and later heard a male voice in the room, the voice slowly approached the door, Qin Gang tiptoed quickly to the elevator entrance.

Feng Hui's door opened, but it was not Feng Hui who came out, a tall and thin man wearing black-rimmed glasses hurriedly came out, came to Qin Gang's side, and looked at Qin Gang with puzzled eyes.

"Wow, I forgot to press the elevator." Qin Gang pretended to be muttering to himself in the state of swiping his phone.

In the elevator, Qin Gang caught a glimpse of the man pressing down on the first floor.

About five minutes later, Li Yi knocked on Feng Hui's door.

"It's just a matter of three or two minutes, my colleague's car didn't turn off, just parked on the side of the road and waited, your parking fee here is too expensive, and the leader has an opinion to reimburse him." Li Yi said.

"It's okay, you come in." Feng Hui didn't have any suspicions.

On the table in the hall, there are two wine glasses, one of which still has red wine in it.

When Li Yi entered the door, he glanced at it, and the position of the large slippers on the shoe rack was obviously completely different from the position that Li Yi wrote down when he first came up today.

Li Yi took out his mobile phone, which was an old mobile phone that he asked Team Liu for, although it was a little worn, but it could be used, the style was ordinary, dilapidated and slightly dirty.

"This mobile phone is what we found at the scene, it is a little worn, I think it should also belong to Li Mengyinling, it is an old mobile phone, you see, if you have a boot password, we want to open it to see all kinds of information on the phone."

Feng Hui hesitantly took the phone, basically didn't look at it carefully, just held it in her hand, "This is not Yaling's mobile phone, she has never used this kind of mobile phone, and the mobile phone she has used since she arrived in Suishi has not been changed." ”

When Li Yi took out his mobile phone, Feng Hui had already seen that it was not Ye Mengyin's.

"Well, I don't think it looks like it, a girl's phone shouldn't be like this, hehe."

Li Yi pretended to smile embarrassedly and told Feng Hui that he only had this kind of inference because he found it at the scene, and told Feng Hui not to be too sad, they would definitely catch the murderer.

"If you think of anything, you can tell me that we need a lot of information." Li Yi didn't forget to tell Feng Hui again when he went out.

The whole process took less than two minutes, Li Yi went out and stood at the elevator entrance to wait for the elevator, but did not go up, and waited for the moment the elevator closed, and tiptoed into the stairwell.

Ten minutes later, Qin Gang sent a message: black-framed glasses, about 1.88 tall, Korean-style corset gray V-neck T-shirt, white casual shoes, and had entered the elevator.

Hearing the sound of the elevator door clanging, and then the sound of footsteps slowly walked in the direction of Feng Hui's room, Li Yi quietly poked his head out and confirmed the message sent by Qin Gang, and after hearing the sound of Feng Hui opening and closing the door, he then went downstairs and walked back to the car, Qin Gang was waiting for him expectantly.

"Why don't you come up."

"Do we still want to enter Feng Hui's room?"

"No, we can do it today."

"So what am I going up there for, have you confirmed?"

"I can only see the back, the height and the color of the shoes and clothes can be confirmed, but it is definitely the same person"

"Team Liu's broken phone didn't make people feel suspicious?" Qin Gang asked.

"I estimate that when she takes out her mobile phone, she will recognize that it is not Ye Mengyin, but not everyone has the thinking of a criminal policeman, a little girl of Feng Hui's age, she will believe it for any reason, but she should believe in our documents, not us personally."

Qin Gang opened the gallery of his mobile phone and handed it to Li Yi, "Brother glasses has been smoking at the door of the convenience store next to him, I secretly took a picture, and there is also his back." ”

Li Yi took a closer look, although the light was not very good, the shot was still clear, and people confirmed it.

The operation in the evening was good, and Li Yi let out a long breath.

"Look at this reaction, you weren't completely sure when we came over." Qin Gang said.

"To tell you the truth, my heart is hanging, and when I heard the elevator closing and you went in, my heart fell to the ground."

Li Yi is actually quite sure of his analysis and judgment this time, but the matter has not been finalized, and he is still a little drumming in his heart.

"How can you be sure that Feng Hui has a boyfriend, and she will definitely come over tonight."

Qin Gang was also satisfied with tonight's result, he admired Li Yi even more, and he also knew that Li Yi would definitely explain the cause and effect to him on the way, but his desire to study made him still can't help but ask.

"Remember I told you that Feng Hui's room costs about 7,000 a month?"

"yes, I can't afford it."

"I can't afford to rent either, but why can Feng Hui afford it?"

Li Yi patted Qin Gang, "You can open your brain, but it's best to have a logical brain." ”

"Feng Hui and Ye Mengyin are both professionals, although the nature of her unit is different from Ye Mengyin's company, but they are also IT industries, Ye Mengyin has such a high income, Feng Hui will not be too bad, half of the income is easy to rent that apartment."

"It's logical, but it's not right."

"Something is wrong."

"Feng Hui came to Suishi directly after graduating from university, and she has been living in her current apartment, and then she is looking for a job. Just graduated, where does the income come from? ”

"Uh...... Is it a rich second generation? Qin Gang wanted to find a suitable setting for Feng Hui.

"If it is a rich second generation, she shouldn't need to share the rent with Ye Mengyin. OK, even if she is not generous, she came to Suishi as her rich second generation, does she not look like Ye Mengyin's independent and self-reliant character? ”

"It doesn't feel like it."

"By the way, thousands of miles away from home, coming to this southern city, if Feng Hui is a rich second generation, her family will not let her go out to be wronged, and she will definitely find ways to use various resources to make her stable and comfortable, where does she need Ye Mengyin to recommend her work, she should recommend Ye Mengyin, right."

"This is the truth, when Feng Hui talked about Ye Mengyin's company, she was envious, and she should be a child from an ordinary family." Qin Gang said.

"Back to the beginning of the question, when she first came to Suishi, how could she rent a house for 7,000 a month."

Qin Gang racked his brains at the beginning, if it wasn't for the rich second generation, the income was not high, but the cost was not low, he saw that although there were no particularly valuable items in Feng Hui's room, but her clothes were all specialty store brands, and the sky gave her money?

"So I deduced that Feng Hui came to Suishi directly after graduating from university, and someone had already made arrangements for her here, including renting this apartment, and she just came to find a job and go to work with peace of mind, so who would this person be?"

"Well, then this person might be her boyfriend, I remember."

Qin Gang suddenly understood that Li Yi had said that Feng Hui's answer to the question of which classmates and alumni had also come to the south was concealed.

"In this way, everything can be explained, this apartment is not rented by herself, maybe we go to the apartment to check the tenant information, it may not be her registration."

"When I went to Feng Hui's house in the morning, there was a pair of large slippers on the shoe rack at the door, and the pair of slippers was obviously not suitable for Feng Hui's feet, and she also had a pair of slippers on her own feet, and there was obviously a difference in size. In this foreign city, there are only two people who are Feng Hui's closest, one is Ye Mengyin, and the other is definitely her boyfriend. Ye Mengyin was killed, she definitely needs her boyfriend to give her spiritual comfort, tonight, her boyfriend will definitely be by her side all night, we will definitely gain something when we come here at this time. Li Yi said.

Qin Gang gave Li Yi a thumbs up, "My heart is as careful as a hair, and I want to learn from you." But why should she hide it, it's not a thing, who doesn't have a boyfriend and girlfriend. ”

"We don't have girlfriends."

"Since they're all here, now go up to the scene and ask questions, won't it be clear, let's go up."

As soon as Qin Gang's voice fell, he turned off the fire and pulled the door to get out of the car.

Li Yi remained motionless, "You let Feng Hui calm down for one night, we all understand, tomorrow we will go to the apartment management office to check the tenant's information, collect more information, and determine the direction we want Feng Hui to understand, you go up again now, she can really not let you enter the door, can you go back to the bureau to open a search warrant." ”

"Brother, you can think of another excuse, I'm in a hurry." Qin Gang grinned.

"Under the pretext that my wallet is pulled up, is this kind of joke on TV any good?"

Li Yi needs to think of a direction, there is too little information collected about Ye Mengyin at present, and at first glance it has no connection with her death, according to Qin Gang's mind map, Feng Hui's boyfriend can also be regarded as a branch, but what is the definition of this branch?

Feng Hui is reluctant to expose her boyfriend to the police, she must have some scruples in her heart, what is this scruples?

In the contact with Feng Hui in the morning, I felt that she was not the kind of smart and clever girl, and she was not good at lying, but she wanted to hide it from the police.

Maybe she doesn't want to involve more people in this kind of thing of dealing with the police; may also be that her boyfriend has misbehaved and has bad deeds, which is easy to make the police suspicious; Or perhaps, she is unwilling to get involved in her private life because of the case......

Along the way, Li Yi didn't come up with a reasonable answer.