Driving with Liang Ying, they soon arrived at the local police station, and the people from the police station were already waiting.

"Inspector Zou, you can be regarded as here. The police officer from the police station greeted Zou Cheng and them in.

Zou Cheng shook hands with the police officer and said, "Hello." ”

"Inspector Zou sits. "The police officer introduced him, and it turned out that he was the sheriff here, but this is a small police station, so the sheriff and the police officer are similar.

The sheriff said: "It has been a long time since yesterday's incident, and we still don't have a clue. ”

"How are you doing so far?" asked Zou Cheng.

The sheriff was embarrassed and said, "We were the first to arrive at the scene, collected the content of the camera and the mobile phone, and we saw several videos from it. ”

"Some of them were filmed before the crash, and some were filmed after the crash. ”

"What else?" asked Zou Cheng.

"We also asked the amusement park security guards and their company, and they said they had not received any intimidation, nor had they called for ransom or anything. The sheriff frowned, he thought it was strange who caused all this, and for what.

"Of course, no one has come out to say that he did it. The sheriff said.

Zou Cheng heard the news that the sheriff had and said: "In other words, this time the prisoner caused this accident, but his motive was not to be famous at all, or for money?"

The sheriff nodded and said, "yes, so there is no place to start now." ”

Zou Cheng glanced at Liang Ying, Liang Yingqi understood what Zou Cheng meant, and she said, "I need to see the diagnostic program of the roller coaster control machine." ”

"Inside. "The sheriff took Zou Cheng and them in.

Liang Ying looked at the contents of the computer, she said: "This is a three-dimensional picture of a roller coaster, each track interface has sensors, and there are more than 100 fail-safes. ”

"These failsafes are designed to stop the roller coaster immediately in the event of an emergency. Zou Cheng said.

Liang Ying nodded and said, "Yes, these are installed for one purpose, that is, to prevent accidents." ”

"But the strange thing is that this time it doesn't seem to work out, all the failsafes are invalid? And at the same time?" Zou Cheng thought it was unlikely.

Sure enough, Liang Ying's thoughts were the same as Zou Cheng's, she said: "Impossible, at the same time, this probability is too small, and at this scale, there is no coincidence at all." ”

"Then what is your inference?" Zou Cheng asked Liang Ying.

"I think someone hacked into the roller coaster's control machine and changed the code so that the control machine became complicit in the murder. ”

This is Liang Ying's opinion, and she thinks that the current view is reasonable.

Zou Cheng nodded, he felt that there might only be this inference now.

He said to the sheriff, "Look at the footage you collected at the time. ”

I watched a lot of videos, all of which were taken later, and those tragic scenes now make people look a little unbearable.

However, there was a scene that made Zou Cheng pay attention.

Zou Cheng said to Liang Ying: "Go back." ”

Liang Ying's cry control video was returned, and then played it all over again.

"It's so exciting, you should sit with me. ”

The two girls on the roller coaster said to the person holding the camera.

The camera sees a roller coaster parked on the platform, and then says the above sentence, after which everyone on the roller coaster comes down, but there is a woman still sitting on it.

Because the person holding the camera suddenly knelt down, took out a diamond ring from his pocket, and he proposed.

"Will you marry me?"

"I know what you're plotting. ”

"Don't look at me as his attention, I'm just helping. ”

Then there was the cheers of the friends around him, but immediately, the camera moved.

"It's not slowing down, it's coming down. ”

"Run, run. ”

"Of course I do. ”

"Ah......h

bumped into each other, and the sheriff said in the back: "The only one who died is this little girl." ”

Liang Ying cried a little pity, a girl who was about to marry her boyfriend died like this.

"Hmm. "No one will be happy to see a video like this.

"There were also some videos that we were asking people who were there at the time to see if they found anything suspicious," the sheriff said. ”

"Do you want to see it?" the sheriff asked Zou Cheng.

Zou Cheng said: "Take a look. ”

A woman with blood on her body came out of the camera, but she was not injured, and the woman spoke incoherently to the camera.

"I can still hear the panic shouts, the crashes, and my sons are in the second car, the eldest son has a broken wrist and the younger son has a scratched leg. ”

"But we're lucky, but the others aren't. ”

After the woman's image passed, a man appeared, and he said, "We weren't supposed to be here today, we just drove around and decided to stop here, which is so surprising." ”

"I was on the platform and I managed to dodge, but the other two didn't, and I don't know what happened to them. ”

"I took my son ......"

"My family and I ......"

After watching the video, Zou Cheng asked the police, "Isn't there an inquiry from the man who proposed just now?"

"He was very emotionally broken, and his girlfriend was taken to the hospital, and he followed, so there was no question from him," the sheriff said. ”

Zou Cheng heard the sheriff say this, and nodded, indicating that he knew.

Although the police have this information, it is not very helpful to Zou Cheng, and these people can't see who has a problem and who doesn't.

Moreover, the police and the park's engineers have also investigated the roller coaster, and there is no physical evidence that someone has disrupted the roller coaster's operation.

"Investigate, has anyone seen anyone who has approached the control room. Zou Cheng said to the officer.

"Let's go to the site and see. Zou Cheng said to Liang Ying.

When Zou Cheng and the others came to the scene, the amusement park had ceased to operate, although this amusement park was very large and there were still many things to play.

But because of such a thing, no one wants to come, and the matter has not been figured out, so it can only be closed temporarily.

There are still a lot of blood stains on the ground, Zou Cheng and Liang Yingqi came here to check.

Just as they were checking, a man rushed in and was stopped by the police.

"Sir, you can't go in, this is the scene. ”

Two police officers stopped the man and prevented him from approaching.

But the man shouted, "Let me go, I'm looking for something." ”

"There's nothing you're looking for here. The officer said to the man.

But the man said tenaciously, "No, it must be here, I have to find it." ”

Seeing this person, Zou Cheng walked up and said, "What you are looking for, it can't be here, the people of the investigation team collected evidence at the scene yesterday." ”

The man looked at Zou Cheng and said, "That's not evidence, it's her ring, I want to get it back, I want her to take it, she should take it." ”

The man's shouting made Zou Cheng understand that this man was the man who proposed marriage on the platform at that time.

"I already know what happened to you, and we will try our best to catch the murderer, so please don't get too excited. Zou Cheng said to the man.

But the man wants to get his ring back, and although his girlfriend is dead, he wants to bring the ring for his girlfriend.

Zou Cheng saw the man's excited look, and he said to the police: "Take him back to the police station, and if the ring is there, give it to him." ”

The man was taken away by the people from the police station, Zou Cheng looked at Liang Ying who was standing there and asked, "That's it?"

"He loves that girl very much, it's just a pity ......" Liang Yingqi felt a little uncomfortable when she saw this scene.

Zou Cheng said: "So we can only catch the murderer now. ”

"Hmm. Liang Ying nodded.

After the man left, the police came over and told Zou Cheng that they had already questioned.

No one had ever seen anyone enter the control room, and no one had seen anyone suspicious.

Hearing the policeman's words, Liang Ying cried and said: "But it doesn't mean that no one has invaded." ”

"Do you want to go and see?" asked Zou Cheng to Liang Ying.

Liang Ying nodded and said, "Hmm." ”

Coming to the control room of the roller coaster, Liang Yingqi turned on his computer and plugged the wire into his computer.

After Liang Ying's cry tested, she said to Zou Cheng: "The automatic fail-safe device on the car has not been activated, because the control machine of the roller coaster has not detected the occurrence of an emergency. ”

"You mean that if it can be detected, this accident can be stopped in time?" Zou Cheng asked Liang Ying.

"Yes. Liang Ying said.

Liang Yingqi continued: "According to the diagnosis, the roller coaster was not wrecked. ”

"What?" Zou Cheng thought it was impossible.

"There is no record of any malfunction, and the roller coaster has to be checked before every start, and the full check function shows as if the accident had never happened. Liang Ying said.

But Zou Cheng looked outside, and he said, "But it did happen." ”

"Why does the program show that it didn't detect a system failure at all?" Liang Ying's face was also full of doubts.

"Remote invasion?" asked Zou Cheng.

Faced with Zou Cheng's question, Liang Yingqi also shook his head and said: "Impossible, physically speaking, it is impossible for this computer to be attacked remotely. ”

"Because it can't connect to the internet, it's completely physically isolated, and people on campus say they don't have Bluetooth and Wi-Fi, so no one can hack in. Liang Yingqi understands long-range attacks, and she has also helped Zou Cheng do such things a few times.

But what is needed is a network, and the premise is that there is a network, and this machine has no network at all, and there is no way to do it with remote invasion.