Li Wenjun nodded, this discovery is indeed very important, and if this hair is really a suspect, then they will soon be able to find that person and use it to find Xiaomeng's location.

"Pack it up and go back to the laboratory department to deal with it..."

Zhang Feng quickly put the hair away, and the two came to the window of the living room together.

"Look, there is also this URL here, it seems that Xiaomeng may have found something, so he was targeted by those people and taken away!"

"But how did they get rid of Little Dream?"

At this moment, Zhang Feng's mobile phone suddenly rang.

"Hey! Brother Zhang? I'm Xiao Chen, and the surveillance shows that Meng Yao entered a small alley and never came out again..."

"Moreover, there are a lot of people walking in that small alley, and it is estimated that dozens of people have passed by there in the past two days, and there were more than ten people passing by that night..."

"Capture what they look like, find out the basic information and send it to me!" Zhang Feng said in a low voice.

The phone hung up, Zhang Feng put the phone away and looked at Li Wenjun.

"Let's go, let's go to that little alley..."

The shortest distance from the police station to Meng Yao's house is through a small alley, but there is no surveillance in that alley, and there are all the alleys and alleys, which also makes them wonder, if Meng Yao was abducted there, then how did they leave?

"Xiao Chen said that there were no vehicles passing by and staying here, and those who passed through this alley also walked out of the alley, but they didn't see Xiao Meng come out..."Zhang Feng said softly.

"Hmm..." Li Wenjun nodded, looked around and walked into the alley.

"Lao Zhang, if you were a prisoner, how would you choose to escape?"

"Me? I guess I'll hide Xiaomeng here first, and then wait a few days to transport her away, and that's the only way to do it now, right? ”

"But there are no residents in this alley, and there are no shops, only this one staircase up to the roof..."

Li Wenjun pointed to the staircase on the side of the wall, which might have been where the prisoner hid Meng Yao.

"Then I'll go up and take a look, and you can see if there are any other clues below?"

Zhang Feng opened his thighs and quickly climbed up the stairs, the stairs in this alley have been abandoned for a long time, basically the residents here do not walk from this side, and this staircase can only lead to the safe passage on the third floor, and there is a rooftop.

There are two ways to access the safe passage on the third floor, one is the unit staircase at the front and the other is the staircase in the side alley.

But there was a section of the staircase in the alley that was broken, about half a meter away, and no one came to repair it, and because it didn't delay people going home, no one reflected.

Coming to the fault, Zhang Feng looked down, this building has a total of six floors, and this is almost the third floor, and you can reach the safety exit on the third floor if you cross here.

"It's easy for an adult male to step over here..."Zhang Feng muttered to himself, and then jumped over with a slight leap.

The staircase on this side is a long time old, and it is covered with rust and a slight shaking when you walk, making it difficult to walk on it.

Zhang Feng's body shape is quite symmetrical, with a height of 175 and a weight of 130, such a weight is slightly swaying when walking on it, and it is estimated that the staircase will collapse if it sinks a little more.

"This place is really a bit difficult to walk, if the kidnapper really walked from here, then where would he put Xiaomeng?"

The surveillance will not lie, except for Meng Yao, all the people who entered the alley went out from the end of the alley, and the duration did not exceed ten minutes, which shows that the prisoner must be very familiar with this alley, and even the two buildings next to it, in order to complete the three parts of kidnapping, Tibet, and escape in such a short time.

Zhang Feng did not choose to go to the safety exit on the third floor first, but went to the rooftop on the sixth floor first.

The rooftop is deserted, and it seems that almost no one has come to it.

However, this kind of old building is also like this, basically living in some older people, and there will be no idea of going to the rooftop at all.

After Zhang Feng came to the rooftop, he walked around it, but he didn't find anything, there were no traces left by things here, and there were no footprints, dust and stones were everywhere, and no one had ever come.

"Looks like there shouldn't be any clues here, so let's go to the third floor and have a look..."

Zhang Feng quickly climbed down the stairs and came to the safe passage on the third floor.

"You can go to all floors of this passage..."Zhang Feng came to the corridor, looked at the top, and then looked at the bottom. But there don't seem to be any clues, so can we only investigate one by one? ”

This old building has a total of four units, each floor has three households, one unit is eighteen, and it will take a day to investigate all eighteen families at the earliest.

Zhang Feng did not take action for the time being, but planned to go back to Li Wenjun to discuss and discuss first, and then to discuss.

......

Li Wenjun walked along the small alley, closed his eyes, and walked forward with his senses, and accidentally bumped into the wall next to him.

"When people are blindfolded, they will subconsciously move to the side, even if someone holds them hostage, it's the same..."

Li Wenjun opened his eyes, squatted on the ground, searched the ground for a while, and finally found some clues.

"Found it!" Li Wenjun took out his mobile phone and slapped it on the ground. "These footprints look quite small, they should be the footprints of Xiaomeng..."

Under the wall on the left, there is a fairly clear footprint, a normal person would not walk by the wall, if there is, it must be a special habit.

Li Wenjun stood up and walked forward along the footprints, and after walking for a while, the footprints suddenly disappeared, which also surprised him.

"The footprints are here, but this place is far from the stairs over there, why did the prisoner pull Xiaomeng forward for a while, and then decided to retreat to the stairs?"

Only the first section of the footprint is clear, and further on, there is a drag-like double line trace, and then the trace abruptly stops and suddenly disappears.

"The disappearance of the footprints is also a big suspicion, but it is likely that the prisoner is moving on her back, and it is a bit difficult to see who is going back in this place..."

The road in the alley is a stone road, but the paving is not complete, the two sides are not completely filled, they are filled with mud, and one side is about thirty centimeters, which is also the reason why Meng Yao's footprints are left.

"The person who kidnapped Meng Yao and the person who went to Meng Yao's house should not be the same person, the kidnapper was obviously a little flustered, and he didn't find the footprints in this corner at all, but the person in Meng Yao's house seemed extremely calm, and he could even sleep in bed..."

Just as he was thinking about this, Zhang Feng had already come to his side, patted him on the shoulder and said.

"How? Did you find anything? ”

"Xiaomeng's footprints were found here, and there are traces of being dragged, indicating that she was indeed hijacked..."Li Wenjun pointed to the ground in the corner of the wall and said softly. But the footprints suddenly disappeared when they got here, and I don't know what caused him to stop suddenly..."

"Isn't that easy?" Zhang Feng looked up and took off his chin and pointed to a camera on the opposite street. "It must be because he saw the camera opposite, so he temporarily changed his mind and chose to put Xiaomeng in the building first!"

"There's a possibility... But this kidnapping was obviously premeditated, and the situation you just mentioned is an impulse case, so they shouldn't have made such a mistake..."

Li Wenjun shook his head, this question doesn't seem to be important now, how to find Meng Yao is the key.

"Did you find anything?" Li Wenjun turned around and asked.

"There was no sign of anyone going to the rooftop, there was a gap in the stairs to the safe passage on the third floor, but most adult males could easily cross it, the prisoner was probably a 20 to 30-year-old male, and nothing else..."

"In other words, Meng Yao is likely to hide among the residents of this unit?"

"It's possible..."Zhang Feng nodded. But it's been two days, and I don't know if she's been sent out..."