Chapter 1729 Believe It or Not

This kind of experiment is really boring and boring, most of it is done by instruments, but Lu Jin intends to show Gu Nianzhi his ability, do it himself, do it with relish, Gu Nianzhi also watched with relish.

When she heard the phone ring and saw that it was Xie Qingying's call, she almost had the urge to hang up.

But for He Zhichu's sake, after thinking about it for a while, she still connected.

"Gu Nianzhi, are you disturbing your Lantern Festival with Mr. Peter?" Xie Qingying asked first, her voice a little stiff.

Gu Nianzhi frowned, "I have nothing to do with Mr. Peter, we are just ordinary friends, why do we want to spend the Lantern Festival together?"

I really didn't spend the Lantern Festival with Peter...

Xie Qingying felt very uncomfortable. Countless speculations rolled in her mind. Finally, she suppressed her emotions and said in a low voice, "Young Master He went to deliver something to you today. Someone secretly took pictures of you."

Gu Nianzhi: "..."

"Sneak shot? Who is so free?" Gu Nianzhi was speechless, "Today is the fifteenth day of the first lunar month!"

Not at home for the festival but want to take a sneak shot outside?

There is no mistake!

"Yeah." Xie Qingying nodded lightly, "Who else? Wen Shouyi. She sent me a photo. I was angry for a while, blocked her, forgot to save the photo, and then she withdrew it. I don't have any proof. You can believe it Well, believe me or not, I will inform you anyway."

Gu Nianzhi twitched the corners of her mouth, thinking that this Wen Shouyi could be considered a character, with such a close stare, did she know that he was testing her and her parents' DNA?

Gu Nianzhi rolled his eyes and said, "Is it convenient for you to talk?"

"I'm in the car." Xie Qingying looked outside the car, it was getting late, and she was almost home.

"Oh, then let's send a text message." Gu Nianzhi said with a smile, "You can talk about it in more detail."

"Is it not convenient for you to talk?" Xie Qingying couldn't help asking tentatively, "Am I still disturbing you?"

"No, I'm watching other people doing experiments, it's very interesting." Gu Nianzhi said with a smile, hung up the phone, and sent a text message to Xie Qingying instead.

Gu Nianzhi: [When did Wen Shouyi send you the photo? What does it look like, can you roughly describe it? 】

When Xie Qingying heard that Gu Nianzhi was watching other people do experiments, she didn't believe it at all.

Where to watch the experiment on the fifteenth day of the first lunar month?

But she didn't say much, she just sent Gu Nianzhi a screenshot of Wen Shouyi's withdrawn photo.

Gu Nianzhi looked at the time when Wen Shouyi withdrew the photo, and hurriedly replied: [There is still time, I will teach you a way to display the photo that the other party has already withdrawn. 】

Because the operation of undoing the photo is not that the other party actually deleted the photo from your phone in due course, but replaced the previous photo information with a predetermined message.

The photos sent by the other party are actually still in the cache of your mobile phone. Most people don't know how to retrieve the photos from the cache.

The photos don't actually disappear until the phone clears the cache.

Gu Nianzhi saw that it had only been a few minutes since Wen Shouyi withdrew the photo, and Xie Qingying's phone cache must still have Wen Shouyi's retracted photo.

Xie Qingying was particularly surprised: [Can the withdrawn message be restored? ! 】

Gu Nianzhi nodded with a smile: [Yes. 】

Then he sent a series of instructions to Xie Qingying and asked her to follow them.

Xie Qingying is an Apple mobile phone, and it is more difficult to transfer photos from the cache than the Android system, and generally requires a jailbroken version to do it.

But with care, these are not problems.

When she was there, she learned a lot of practical hacking knowledge from Zhao Liangze.

Jailbreaking iPhones is just a routine operation for hackers.

Xie Qingying followed Gu Nianzhi's instructions and operated on the phone step by step, as if opening the door to a new world.

When she retrieved the two photos that Wen Shouyi had withdrawn from the phone cache, she was already in admiration for Gu Nianzhi.

This little girl is really amazing.

Beauty and brain co-exist, and the body is in harmony with grace, no wonder He Zhichu still has feelings for her...

Xie Qingying was determined to keep a respectful distance from Gu Nianzhi,

With complicated emotions, he saved those two photos in his phone and forwarded them to Gu Nianzhi.

Then he replied: [I still have something to do, just to remind you. 】

【Happy Lantern Festival. 】

Gu Nianzhi also replied: [Happy Lantern Festival. 】

Xie Qingying closed the dialog box, looked up and saw that the car had already parked in front of the house.

"Qingying, are you okay?" Xie Qingying's best friend got off the driving seat, opened the door for her, and helped her out of the car.

Xie Qingying's drunkenness was almost gone, she smiled and nodded to her best friend, "Thank you, go and accompany your boyfriend, I'll go back and sleep."

Her best friend sighed, "I'll help you in before leaving."

Xie Qingying was helped into the house by her best friend, washed up casually, and went to bed.

But she couldn't sleep, and her spirits were in a state of excitement.

After her best friend left, Xie Qingying took out her mobile phone and started calling He Zhichu.

But He Zhichu had been working and did not answer her calls.

...

Gu Nianzhi rested her chin, staring at the photos on the phone in a daze.

Lu Jin set up the instruments and asked them to start the full DNA sequence test of Wen Dayou and Liang Meili.

Turning to see Gu Nianzhi holding the phone in a daze.

"What's the matter? Who called just now?" When Lu Jin started working, he was very concentrated and paid little attention to the things around him.

Gu Nianzhi frowned and looked up, and showed Lu Jin the photo on his phone, wondering, "Look, how did you take this secretly? I think the quality of the photo is not bad, but I can't tell where the person who took the photo is."

If you can find out where this person was filming, and then check the nearby surveillance, you should be able to follow the clues and find Wen Shouyi's criminal evidence.

But she looked left and right, but she couldn't determine the position of the photographer.

Lu Jin glanced at it and said, "From the perspective of the photo, it was taken from the side and above. This angle is a bit strange. It doesn't look like an ordinary digital camera."

He pointed to his computer and said to Gu Nianzhi, "Send me the photo, and I'll analyze it for you."

"Okay!" Gu Nianzhi cheered up and quickly sent two photos to Lu Jin.

Lu Jin turned on his desktop computer, which was comparable to the central server, and opened the photos with mathematical analysis software.

Soon, this flat photo became three-dimensional on Lu Jin's computer screen.

People and objects, as well as surrounding buildings, stand clearly on the screen.

Lu Jin pointed to the picture on the computer and said, "Using this model, we can deduce the specific position of the shooting camera from the angle of the character's display."

"Can this be deduced?!" Gu Nianzhi was extremely surprised, and looked at Lu Jin with his black pupils as if he could speak.

Lu Jin smiled smugly, and clicked the mouse twice on the computer screen, "Of course it can be calculated."

"Do you know gun ballistic analysis experts? They can know what type of bullet is fired from what type of gun with just a single bullet hole."

"A better ballistics expert can even pinpoint which gun the bullet came from."

"We also use this principle to calculate the position of the photographer."

"This person took pictures with an optical lens, and the photos were also developed with film, which made it more difficult to trace."

"If he's using a digital camera, and the photo is a digital picture, I'd be able to locate him in less than a second."

Lu Jin shook his head regretfully, "But now, I have to model his photo, and then calculate from the angle of light projection, to find the end of the light, which is where the person was when he took the photo."

"Don't you have surveillance in the community? Can you call it out and have a look?" Gu Nianzhi said quickly, "Maybe he is on surveillance."

Lu Jin shook his head, "You can watch the surveillance, but don't hold out too much hope. Looking at the angle and the texture of the photo, I feel that he used a telephoto lens to shoot this way from a tall building in the distance."

Therefore, it is impossible for the monitoring around the fence of the community to see this person.

The optical lens also avoids being scanned by electromagnetic waves, so this person cannot be found by conventional methods.

Only by using complex three-dimensional analytic geometry and linear algebra to carry out modeling calculations like Lu Jin can he accurately find out his location.

Gu Nianzhi watched Lu Jin program and calculate on the computer with admiration.

Half an hour later, Lu Jin's program finally finished.

He pointed the mouse at the window of a tall building on the stereoscopic model, "It's right here. That person used a telephoto lens to secretly shoot you here."

As he said that, Lu Jin wrote down the man's floor and house number, "When looking for He Chu, let him arrest him."

Gu Nianzhi nodded happily, and immediately called He Zhichu.

At this time, He Zhichu's work had just come to an end.

He just turned his phone to silent in order not to be disturbed.

As soon as I picked it up now, I found that there were many missed calls in front of me, and the last missed call was actually from Gu Nianzhi.

He Zhichu was slightly taken aback, and immediately called Gu Nianzhi back.

Just as Gu Nianzhi was about to call again, he found that He Zhichu had already called, and hurriedly said, "Young Master He, are you still working? Did I bother you?"

He Zhichu smiled, "I just finished my work, what's the matter? Is there something wrong?"

"Well, I have something to do." Gu Nianzhi said, and sent He Zhichu an address, a coordinate, and two photos from Xie Qingying.

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This is the second update today: Chapter 1729 "Believe it or not".

Today, we will continue to update three times, and return the monthly ticket for May.

Please vote unanimously for recommendation~~~

The third watch at eight o'clock in the evening.

Hey guys, little angels~~~

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