Criminal Investigation: Forbidden Rose

"Since we can find the Bluetooth address of Leng Xiangrong's headset from the connection record of the treadmill..." Shao Lin thought for a while and asked, "Is it possible for us to find out the Bluetooth address of Kangcheng's headset that was hacked at that time?" ?”

"Theoretically, it should be possible." Yan Jingjing's ten fingers flew up on the keyboard, "Let me try this, I just learned from the online scouting upstairs."

A string of codes quickly ran across the screen.

“61：33：ae：02：f8：42！凶手的蓝牙地址！”没过多久,阎晶晶大声喊道,“这是康成耳机与手机蓝牙连接中断后，重新连上的设备！”

Xia Yi patted the man on the shoulder heavily: "There is something wrong, Comrade Yan Jingjing!"

"Reasonable." The little girl said to herself in a daze, "I shouldn't stay on the third floor, I should go to the seventh floor to investigate..."

Shao Lin thought for a while and analyzed: "I think the murderer should have sent an electric current to activate the program through a mobile phone. Otherwise, in a place like CBD where people come and go, holding an electronic device in his hand will not only appear Obtrusive and easy to catch on camera. Look down at your phone and no one will suspect."

"That makes sense," Xia Yi asked, "Then is it possible for us to find that mobile device through the Bluetooth address?"

"Are you dreaming, team leader? Unless you are within 18 meters of this device. If such an awesome program can be written, the murderer will definitely modify his Bluetooth address." Yan Jingjing thought for a while and said, "However, In this case, there is a high probability that it is an Android phone, and Apple has to be jailbroken, which is very troublesome."

"The two cases happened at about the same time, around [-] o'clock on weekdays—whether it is Block B of Youhuikang or the gym of the Black Diamond Club, they are all in the central business district. It is very likely that the murderer can haunt the CBD at this point. Probably someone who works nearby."

Shao Lin's eyes fell on Zhuang Zhengyi again.His company is in the CBD area.However, at the time of Kang Cheng's death, many colleagues in the Kewei Business Incubator can attest that Zhuang Zhengyi was in a meeting at that time, 10 minutes' walk away from the accident site.

If this person is not the murderer...

So, is he likely to be the murderer's next target?

In the inquiry room, Zhuang Zhengyi sighed and took out a wireless earphone box from his bag: "I don't know why this happened. I actually use the same earphones. I really like the sound effect." .”

Shao Lin suggested: "Can we check it?"

The X-ray "swish" a photo, and the result came out soon.Zhuang Zhengyi's earphones were clean, and there was nothing in them.

"Do you suspect that the murderer might also be targeting me?" Zhuang Zhengyi frowned deeply, his eyes full of doubts, "Why?"

"The specific motive of the murderer is still under investigation, and we are not yet sure whether he will commit the crime again." Xia Yi explained, "But, based on what you know about Kang Cheng and Leng Xiangrong, do they have any enemies?"

"Actually, I am not very familiar with Kang Cheng and Leng Xiangrong." Zhuang Zhengyi said slowly, "Although Leng Xiangrong invested in Tengfei Technology, I had already left at that time. The three of us... can only be regarded as I was a drinking buddy I met in the club. At that time, I chatted about investment, and the chat was quite speculative. It happened that the club points were cleared every year, so we changed to the five-day cruise together... eh."

"After returning to Yan'an, how often do you get together?"

"Just at the beginning of the year, I had an appointment in the bar of the club. Later, I kept talking about getting together again, but everyone was busy, so I put it on hold."

"As the earliest designer of Tengfei wireless earphones, Mr. Zhuang, what do you think of the modification of this capacitor? Can you provide us with some clues from a professional perspective?"

Zhuang Zhengyi looked at the structure diagram with capacitors added, thought for a moment, and replied: "The technological breakthrough of wireless earphones lies in the chip technology itself. Sacrificing size - so, in my opinion, adding this capacitor to an existing headset is not particularly difficult, but anyone with a background in engineering can do it. The more difficult part, should be in transmitting via bluetooth , the code to trigger the electric shock."

Xia Yi nodded.

"I should..." Zhuang Zhengyi shook the earphone in his hand, "Are you worried about it being dropped?"

The police were silent for a long time, and could only say: "You can pay attention to its Bluetooth address."

"Okay. I'm scared to say it." Zhuang Zhengyi shook his head, "I wish you all solve the case as soon as possible. If there is anything that can help, please feel free to ask me."

Xia Yi looked at the back of Zhuang Zhengyi leaving, and couldn't help asking: "Will the murderer continue to commit crimes?"

"It's hard to say." Shao Lin shook his head, "I'm inclined that he will, but what the murderer's motive is is not clear at present. Kang Cheng can also say that the murderer wanted to complete Yan Fangyu's revenge, and that Leng Xiangrong did it because of Yan Fangyu's revenge. What? On the surface, Leng Xiangrong's finances are clean, and he has no obvious enemies... It is true that these three people were on that ship back then, but there is no evidence to prove that the Penglai Princess, and their current death, Is there any connection?"

Shao Lin stared blankly at the air, and a black figure without a face appeared in front of his eyes.The sound of the ball game was suddenly interrupted, and Leng Xiangrong collapsed on the treadmill in the gym; there was a thunder in the sky, and Kang Cheng collapsed on the zebra crossing above the subway entrance.The black figure put the phone in his trouser pocket, turned around expressionlessly, and blended into the turbulent crowd of CBD.Whether it is the subway entrance or the shopping mall covered by the gymnasium up and down 18 meters, there are too many people...

He can be anyone.

But, how did the earphones of the two of them get dropped?

Kang Cheng and Leng Xiangrong have different office locations, and they travel on average once a week. According to the consumption records, the overlapping consumption locations are limited to the gym, bar, clubhouse under the Black Diamond Club, and several well-known restaurants in the CBD area...Of course, it’s just the location Coincidence, time is not the same.

Shao Lin thought to himself that the person who dropped the earphones might be a mutual friend of the two.The faceless black figure in his heart suddenly spoke: "What kind of earphone are you? Tengfei Wireless 6.0 Deluxe Edition? Can you lend me a listen?"

After the other party readily agreed, he quietly returned the modified earphones: "Thank you."

Perhaps, the person who dropped the bag was someone close to the deceased.In front of Shao Lin, the black figure handed the mobile phone to Yan Fangyu, and told her to secretly replace his wireless earphones when her husband was unaware.

Or maybe, at a fancy restaurant.The black figure said politely: "Sir, do you need to charge your earphones? Our store provides free charging services..."

It's also possible that it was in a bar... The stranger who danced close to him, the lady who accompanied him, just changed his earphones?

No.no.This entry point does not work.There are so many possibilities.

Thinking of this, Shao Lin suddenly shook his head, as if he wanted to shake those redundant thoughts out of his mind and let his brain reset to zero.

Xia Yi immediately cast a puzzled look at him: "Are you okay?"

Shao Lin stretched out his index finger and circled his temple, and said softly, "Too many thoughts, the CPU is overheating."

Xia Yi said "Oh" in a daze, and told Shao Lin with a pair of big blank eyes that he had never had such troubles.

After a while, someone Xia took out a bottle of iced six walnuts from the refrigerator, and put it directly on Shao Lin's forehead: "Come on! Let me cool you down!"

Just as Shao Lin was thinking about the question, his head suddenly turned cold, and he almost swears on the spot: "... I thank you!"

Xia Yi smiled like a silly dog, but his expression was very sincere: "No thanks, no thanks, walnuts make up the brain!"

Needless to say, cooling is really useful.

Countless black figures exploded and disappeared in Shao Lin's mind, and then returned to the most original one - he successfully changed his mind.

It takes time and cost to make a headset with a capacitor installed, not to mention, the opportunity to drop the headset close to the body is not every day.Therefore, for the murderer, even if the bag swap is successful, there are countless hidden dangers of failure.For example, when the last step of the plan was executed, did the target happen to not be wearing earphones?The wireless headset was accidentally lost by the target?The target did not charge the headset in time?The target decided to change the brand of headphones?

If one of them makes a mistake, the murderer will fall short. Therefore, in order to ensure the success of the electric shock plan, the murderer will definitely execute the last step as soon as possible after "dropping the package".

The sooner the better.

Because the longer the delay, the greater the risk of failure.

If he uses this principle to analyze Kang Cheng's case...

Yan Fangyu has been in contact with the murderer through Internet calls.Before, she played disappearing, simulating that she was "divided into corpses", in order to force Kang Cheng to publicly admit her crime of cheating on marriage and derailment.Before Kang Cheng made a public apology, Yan Fangyu needed Kang Cheng to live, and there was no need to change his earphones.However, Kang Cheng used public relations to press again and again, but Yan Fangyu never got what he wanted.After Yan Fangyu's death, the murderer temporarily changed the plan and directly killed Kang Cheng—but at that time, Kang Cheng had only returned from Europe for two days.It is very likely that this earphone was dropped after he returned to China.

In this way, the scope of investigation is greatly reduced!

Soon, Shao Lin found out that on the first night when Kang Cheng returned to Yan'an City, he went to the "Yaxuan Clubhouse"-this is the place where the wealthy circle of Yan'an City often goes to discuss business. In fact, to put it bluntly, it is A bar with a quiet atmosphere, the kind that can open private rooms alone.

The wealthy people in Yan'an City are no strangers to Yaxuan Clubhouse.Yan Jingjing checked the records, only to find that Leng Xiangrong had been to this place two days before his sudden death!

It is very possible that the earphones of both of them were swapped in Yaxuan clubhouse. When they were drunk, they used them to charge or borrow them... everything is possible.

The Yaxuan clubhouse is a clubhouse under the Black Diamond Club, and it is not something ordinary people can come in and out of casually.In addition to the waiter, you must hold a black diamond VIP card, and if you are a customer invited by a VIP, you must also register with your real name.

Xia Yi personally visited the Black Diamond Club and pulled out a list of all the members who visited in those two days.

"Our murderer..." Shao Lin clenched his fist with his right hand, put his index finger under the tip of his nose, and analyzed slowly, "He works in CBD, has a background in physics, electronics, engineering, or computer, and has a very strong coding ability. He He usually uses an Android phone, often goes to hacker forums, and likes to design some small programs by himself. At work, he may also like to write some small codes to help colleagues solve problems."

"That day when Yan Fangyu fell from the building, the murderer was facing an emergency. He took away Yan Fangyu's SIM card without hesitation, and pushed the body into the rainwater pipe. It can be seen that he was so calm that he was almost cold-blooded. Moreover, he was able to pry the victim alone. manhole cover, so it's more likely to be a male."

"He usually doesn't communicate much with his colleagues, and he doesn't like to have dinner with everyone on weekdays. He will go out to eat alone, or order takeaway by himself. However, he is serious and responsible at work, but all tasks assigned to him , will be completed as completely as possible. At the same time, his thinking is very flexible, and he can modify the original plan at any time according to the opportunity, instead of being stuck in a problem like many obsessive-compulsive patients. "

"Among the VIP elites of the Black Diamond Club, is there anyone who fits this profile?"

After hearing this, Xia Yi smiled all over his face and clapped his hands loudly.

After applauding, he faintly said, "No."

Shao Lin: "..." What an applause without you! ! !

"If it's not the black diamond VIP..." Shao Lin thought for a second, "Maybe, he pretended to be an employee of the clubhouse?"

The Yaxuan club itself is located in the CBD area, and the waiters will wear suits and leather shoes when they come in and out.Moreover, the waiter serving tea and water can appear in every box, and it is not difficult to drop a pair of headphones in the middle of the night when everyone is drunk.

"Let's go fishing in the clubhouse!" Xia Yi slapped his thigh and decided, "Everyone should bring a Bluetooth address detector in their pockets to see if they can find the murderer's Bluetooth address?"

Yan Jingjing frowned: "But what if he only uses that address when calling people, and usually uses another mobile phone?"

"Try first. The case of Kang Cheng and Leng Xiangrong has not been exposed to the public. The murderer may think that he is perfect and has not become suspicious. Even if he can't find the address, he will have to go to the club again."

In order to avoid alarming the enemy, Xia Yi did not notify the clubhouse, and brought a carload of people directly into the air.As a result, a group of people were stopped by security guards.The security guards were all burly and expressionless, looking at them with contemptuous eyes: "Without a black diamond card, no one is allowed to enter."

Yan Jingjing just wanted to take out the police notebook, but was stopped by Xia Yi: "It's easy to talk, just wait."

Unexpectedly, Xia Yi made a phone call, and the lobby manager ran out in a hurry, smiling like a flower on his whole face, nodding and bowing to Xia Yi: "So it's Mr. Xia, a rare visitor! Disrespect and disrespect. Xia Yi How's your health? I haven't been here for a long time. Our security guards are new here. We only know your eldest sister, don't tell me, huh?"

Just like that, Xia Yi, wearing clothes and pants washed by Uniqlo, swaggered across the threshold of the clubhouse inlaid with gold and jade, and Yan Jingjing's mouth suddenly became O-shaped.

The manager led a group of people through the classically decorated corridor: "Come here, please."

As he said that, the manager couldn't help but leaned close to Xia Yi's ear and whispered: "Tell me first, are you here to investigate the case? If there is any problem, just feel free to—"

Xia Yi grinned lazily: "Who said I'm here to investigate the case?"

As he said that, he reached out and grabbed Shao Lin's shoulder: "Can't I bring a few brothers to have fun?"

"Yes, yes, yes!" The manager suddenly smiled again, and turned to greet the waiter, "Hurry up and serve a snack platter to the private room, I invite you!"

But as soon as the door of the private room was closed, Xia Yi regained his sneaky expression, like a husky about to do something bad: "Fuck, this battle is much stricter than I imagined, next What shall we do?"