This kind of experiment was very tedious and boring to do. Most of it was done by instruments, but Lu Jin deliberately wanted to show Gu Nianzhi his abilities. He did it himself and did it with relish. Gu Nianzhi also watched with relish.
When she heard her phone ring and saw that it was Xie Qingying, she almost had the urge to hang up.
However, for He Zhichu's sake, she thought about it and answered the call.
"Gu Nianzhi, did I interrupt your Lantern Festival with Mr. Peter?" Xie Qingying asked first, her voice a little stiff.
Gu Nianzhi frowned. "There's nothing going on between me and Mr. Peter. We're just friends. Why would we celebrate the Lantern Festival together?"
She really hadn't spent the Lantern Festival with Peter …
Xie Qingying felt very uncomfortable. Countless speculations rolled through her mind, but in the end, she suppressed her emotions and said in a low voice, "Young Master He went to deliver something to you today. Someone secretly took photos of you."
Gu Nianzhi, "…"
"Secretly taking pictures? Who's so free? "Gu Nianzhi was speechless." Today is the fifteenth of the first lunar month! "
Instead of celebrating the festival at home, he's secretly taking photos outside?
Are you kidding me!
"Mm." Xie Qingying nodded lightly. "Who else? Wen Shouyi. She sent me a photo, I was angry, blocked her, forgot to save the photo, and then she took it back. I have no proof. Whether you believe it or not, I'm informing you anyway. "
The corners of Gu Nianzhi's mouth twitched. Wen Shouyi was quite a character. She was watching her so closely. Did she know that she was testing her and her parents' DNA?
Gu Nianzhi rolled her eyes and asked, "Is it convenient for you to talk?"
"I'm in the car." Xie Qingying looked out of the car. It was getting late, and she was almost home.
"Oh, then let's text." Gu Nianzhi smiled. "You can give me more details."
"Is it inconvenient for you to talk?" Xie Qingying couldn't help but ask, "Am I disturbing you?"
"No, I'm watching someone else do an experiment. It's very interesting," Gu Nianzhi said with a smile. She hung up and sent Xie Qingying a text message.
[When did Wen Shouyi send you the photo? What does it look like? Can you describe it?]
Xie Qingying didn't believe it at all when she heard that Gu Nianzhi was watching other people do experiments.
Where should I watch the experiment on the fifteenth day of the first lunar month?
However, she didn't say much and only sent a screenshot of Wen Shouyi's retracted photo to Gu Nianzhi.
Gu Nianzhi looked at the time that Wen Shouyi had deleted the photos and quickly replied: [There's still time. I'll teach you a way to display photos that have already been deleted.]
This was because deleting the photo didn't mean that the other party had deleted the photo from your phone at the right time. Instead, it replaced the previous photo message with a fixed message.
The photos sent by the other party were actually still in your phone's cache. Most people wouldn't know how to retrieve the photos from the cache.
The photos would only disappear after the phone's cache was cleared.
Gu Nianzhi saw that Wen Shouyi had only deleted the photos a few minutes ago. Xie Qingying's phone must still have Wen Shouyi's deleted photos.
Xie Qingying was especially surprised. [You can recover a deleted message?!]
Gu Nianzhi nodded with a smile. [Sure.]
Then, he gave Xie Qingying a series of instructions for her to follow.
Xie Qingying was using an iPhone, so it was more difficult to retrieve photos from the cache than it was for Android. Usually, only a jailbroken version could do it.
But with Gu Nianzhi around, none of this was a problem.
When she was over there, she had learned a lot of practical hacking knowledge from Zhao Liangze.
Jailbreaking an iPhone was just a routine procedure for hackers.
Xie Qingying followed Gu Nianzhi's instructions and operated the phone step by step. It was as if she had opened the door to a new world.
When she retrieved the two photos that Wen Shouyi had deleted from the cache, she was already full of admiration for Gu Nianzhi.
This young girl was truly amazing.
Beauty and brains coexisted, and her figure and charm were both amazing. No wonder He Zhichu still had feelings for her …
Xie Qingying was determined to keep her distance from Gu Nianzhi. With mixed feelings, she saved the two photos on her phone and forwarded them to Gu Nianzhi.
Then she replied: [I still have something to do. I just wanted to remind you.]
[Happy Lantern Festival.]
Gu Nianzhi also replied: [Happy Lantern Festival.]
Xie Qingying closed the chat and looked up to see that the car had already stopped in front of her house.
"Qingying, are you okay?" Xie Qingying's best friend got out of the driver's seat, opened the door for her, and helped her out of the car.
Xie Qingying's drunkenness was almost gone. She smiled and nodded at her best friend. "Thank you. Go and accompany your boyfriend. I'll go back and get some sleep."
Her best friend sighed. "I'll help you in before you leave."
Xie Qingying was helped into the house by her best friend. She washed up and went to bed.
But she couldn't sleep. She was in a state of excitement.
After her best friend left, Xie Qingying took out her phone and started to call He Zhichu.
However, He Zhichu had been working and didn't pick up her call.
..
Gu Nianzhi rested her chin on her hand and stared at the photos on her phone in a daze.
Lu Jin set up the equipment and asked them to start the full DNA sequence test for Wen Dayou and Liang Meili.
He turned around and saw Gu Nianzhi holding her phone in a daze.
"What's wrong? Who called just now? "When Lu Jin was working, he was very focused and paid little attention to what was happening around him.
Gu Nianzhi frowned and looked up. She showed the photo on her phone to Lu Jin and said in confusion, "Look, how did they take this secretly? I think the quality of the photo is pretty good, but I can't tell where the person who took the photo was at all. "
If she could find the location where this person took the photo and check the nearby surveillance cameras, she should be able to find evidence of Wen Shouyi's crime.
However, she looked left and right, but she couldn't determine the location of the person who took the photo.
Lu Jin glanced at it and said, "From the angle of the photo, it was taken from the side. This angle is a little strange. It doesn't look like a normal digital camera."
He pointed at his computer and said to Gu Nianzhi, "Send me the photo and I'll analyze it for you."
"Okay!" Gu Nianzhi perked up and quickly sent the two photos to Lu Jin.
Lu Jin turned on his desktop, which was comparable to the central server, and opened the photo with mathematical analysis software.
Soon, the flat photo became three-dimensional on Lu Jin's computer screen.
The people and things, as well as the surrounding buildings, were all clearly visible on the screen.
Lu Jin pointed at the picture on the computer and said, "With this model, you can deduce the exact location of the shot from the angle of the person's display."
"You can deduce that too?!" Gu Nianzhi was extremely surprised. Her dark eyes looked at Lu Jin as if they could speak.
Lu Jin smiled proudly and clicked the mouse twice on the computer screen. "Of course I can deduce it."
"Do you know any gun ballistics experts? They can tell what type of bullet was fired from what type of gun just by looking at a bullet hole. "
"An even more impressive ballistics expert can even determine which gun the bullet came from."
"We use this principle to deduce the location of the person who took the photo."
"This person used an optical lens to take the photo, and the photo was also developed on film, which makes it more difficult to trace."
"If he used a digital camera and this photo was a digital picture, I would have been able to lock onto his location 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 the light to find the end of the light, which is where the person took the photo."
"Don't you have surveillance cameras in the neighborhood? Can you check them out? "Gu Nianzhi quickly said," Maybe he's in the surveillance cameras. "
Lu Jin shook his head. "You can look at the surveillance cameras, but don't get your hopes up. From this angle and the texture of the photo, I feel like he used a telephoto lens to take the photo from a tall building in the distance. "
Therefore, it was impossible for the surveillance cameras around the walls of the neighborhood to see this person.
The optical lens also avoided being scanned by electromagnetic waves, so it was impossible to find this person using conventional methods.
Only someone like Lu Jin, who used complex three-dimensional analytic geometry and linear algebra to model and calculate, could accurately find his location.
Gu Nianzhi watched Lu Jin program on the computer in admiration.
Half an hour later, Lu Jin finally finished his program.
He used the mouse to point at the window of a tall building on the three-dimensional modeling. "It's here. That person used a telephoto lens to secretly take pictures of you. "
As he spoke, Lu Jin wrote down the person's floor and house number. "Find He Zhichu and ask him to arrest him."
Gu Nianzhi nodded happily and immediately called He Zhichu.
He Zhichu's work had just come to an end.
In order not to be disturbed, he had turned his phone to silent.
Now that he picked it up, he realized that there were many missed calls. The most recent missed call was from Gu Nianzhi.
He Zhichu was slightly stunned and immediately called Gu Nianzhi back.
Gu Nianzhi was about to call again when she realized that He Zhichu had already called. She quickly said, "Young Master He, are you still working? Did I disturb you? "
He Zhichu smiled. "I just finished work. What's wrong? What's the matter? "
"Yes, I'm busy." As Gu Nianzhi spoke, she sent He Zhichu an address, a coordinate, and two photos from Xie Qingying.
※ ※ ※
This was the second update of the day: Chapter 1729, "Believe It or Not".
Today, we will continue with the third update, and we will also add more monthly votes for May.
Please vote all the recommendation votes ~ ~ ~
8 pm, the third update.
Mwah, all the big shots and little angels ~ ~ ~
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