"Can all the surveillance be checked within an hour?" Director Tian's voice rose by two octaves.

In an instant, he was excited. If they could locate the approximate location within an hour, and if the suspect didn't immediately flee to another province but instead hid near Changping, they could arrest him within another hour.

Originally, his best plan was to apprehend the suspect within 48 hours. If they could shorten it to just a few hours, it would be a remarkable achievement, like a divine intervention in the field of criminal investigation.

They received the report in the early morning, identified the prime suspect in the morning, and arrested him at noon. By the time they returned to the bureau, their lunch was still hot.

Just as in ancient times when wine was heated to slay Hua Xiong, now it was me, Tian Yunsheng, heating up my lunch to catch the criminal.

Under normal circumstances, it would not be appropriate to provide this surveillance evidence to a third party. But in urgent situations, Tian Yunsheng didn't waste time questioning and directly had Wang Kai make a copy of the video files.

Although they agreed to Baidu's assistance, until they had any results, Director Tian wouldn't stop any ongoing work. The police officers continued to do their own tasks.

Wang Kai hurriedly returned to Baidu's Deep Learning Research Institute and linked the hard drive to Baidu's server.

When Li Yanhong heard about this, he was pleasantly surprised and praised Wang Kai for his quick reaction.

Immediately, a group of developers was assigned to handle the segmentation and storage of these videos.

Wang Kai focused on modifying and testing the algorithm's functionality.

In order to obtain results as quickly as possible, Wang Kai used the most foolish method: whenever the algorithm detected a human target in the video, he recorded the video file name and the description of the video playback at that time in a text document.

This was the method that required the least modification. When the time came, the police officers only needed to view the recordings according to the time points described in the text file.

Wang Kai roughly tested segments of a video at different time points and made some comparisons. He found that from the time of the crime until around 8 or 9 in the morning, there were basically no people.

Having five or six minutes of someone appearing in ten hours of surveillance was already good. This part could save the police a hundred times the time.

After 8 or 9 in the morning, more people started to appear, but by then it had already been 12 hours since the crime, and it was no longer a crucial observation period.

It was highly probable that they would find the suspect's trace from the surveillance footage in the early morning and then conduct targeted investigations.

Including the round trip, Wang Kai spent about two hours. Before he returned to the Yan Jing Changping Public Security Sub-bureau, he had already sent the important time points he recorded through email.

"Good! Good! Good!" Director Tian was overjoyed and said three "good" in a row. He quickly conveyed this crucial information to everyone.

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With the clear time point information, the efficiency of the police officers screening increased by tens of times. Less than thirty minutes after Wang Kai returned, someone discovered the suspect's trace.

If they didn't have this information, based on the previous speed, it would have taken at least six or seven more hours to investigate here.

"Do you see? He consciously avoided the surveillance cameras, so we couldn't find him in the campus surveillance." A police officer pointed to the corner of the screen and said, "Although the killer is a minor student, he has a certain awareness of counter-surveillance."

"But it's late at night, pitch black. How is it possible to completely avoid the dense surveillance cameras?" an experienced police officer sneered. "He probably climbed over the wall like this more than once to avoid the school's cameras, but he was still caught by the cameras on the surrounding streets."

"Everyone can stop their current investigation work. Starting from 22:02 as the starting time point, with the location where Wang was filmed climbing over the wall as the center, begin the second round of investigation!"

With the first clue, the subsequent work would be much easier and faster.

Not to mention that Wang Kai also provided the locations where people appeared in each video.

The police could easily choose the priority locations to investigate based on time and relative distance.

"After he climbed over, he didn't escape overnight but found an irregular hotel to stay in first." Following Wang's trail, the police quickly located his first stop.

These small hotels allowed guests to stay without an ID, which was a means to evade screening.

"He can't run even if he wants to. He's not yet 18 years old, so he can't get a driver's license. If he relies on public transportation, he will definitely be exposed to our surveillance."

Without his own vehicle, whether it was the airport, high-speed rail, train station, or long-distance bus station, it would be easy to track his movements.

From the moment he committed the crime on campus, he was destined to be caught in the net of the law.

It just so happened that he encountered Wang Kai, who was promoting Meng Fanqi's new technology, and was arrested even faster.

If Meng Fanqi were here, he would vaguely remember this case.

Because the universities in Yan Jing Changping were not far from each other, such a heinous incident would be widely circulated among the nearby university students.

In the original timeline, the killer Wang eventually turned himself in the next day. After a lot of internal struggle, Wang confessed the truth to his parents.

Under the guidance and advice of his parents, he turned himself in before the evening of the second day, less than 24 hours since the crime occurred.

Unfortunately, that was the original timeline. With the upgraded speed of the Changping police's investigation, they directly arrested him at two or three in the afternoon.

At this moment, Wang was not mentally prepared, and he didn't even have time to talk to his parents. The self-surrender in the original timeline now naturally became a lightning-fast arrest, without any self-surrender plotline.When the police handcuffed Mr. Wang and put him in the police car, it was not even half past two in the afternoon, less than six hours since the official report of the crime.

From the time of the crime, it was only about 18 hours.

In the record of solving various types of cases, six hours is already a very swift speed, let alone a murder case.

Generally speaking, cases that are solved in such a short period of time are mostly petty thefts. The suspects may not have noticed the surveillance cameras and went home after stealing, so they were quickly traced.

In the case of solving murder cases, those that can be arrested and brought to justice within 24 hours are worthy of being used as positive examples and given special recognition.

On the eve of Baidu's Friday press conference, a sudden accident and a lightning-fast murder case resolution provided practical application cases for the technology proposed by Meng Fanqi.

And it won the favor and support of Changping District, Yan Jing.

On the Australian side, Meng Fanqi, who had just had dinner with the Google quartet, received a WeChat message from Wang Kai as soon as he walked out of the restaurant's door.