In the dead of night, the chill of the autumn night after the rain invaded, the sky was a dull blue, and a few stars were faintly twinkling in the sky. Qiu Shan and the two walked quickly to the street, and the street was sparsely populated. The two walked east for about ten minutes before finding a taxi at an intersection.

The taxi drove all the way and arrived at the east gate of Xi'an Jiaotong University half an hour later. The two got out of the car, searched along the street for a while, and found a signboard of "Dake Computer" in a place to the north.

Qiu Shan saw that there was a faint light in the roller shutter of the store, so he stretched out his hand and patted it twice, and there was a "bang, bang, bang" sound on the roller shutter. A small door next to it "creaked" open, and an unkempt exploding head poked out.

The explosive head rushed to Qiu Shan and smiled: "Brother Qiu, go this way." He glanced at Ah Qi again, and then said, "Hey, there are friends, all come in." ”

Qiu Shan and Ah Qi squeezed into the store together.

"Uh, watch out for the keyboard under your feet...... Don't stumble, go this way. Liu Qi reminded them while leading the way.

Qiu Shan saw that Liu Qi's shop looked like a hardware store, with a room full of broken computers with mice and keyboards, and various motherboards, hard disks, power boxes, etc. on the counter on the ground, so he asked, "When did you open the store?" I heard that you went to a military-industrial complex after graduation. ”

Liu Qi scratched his explosive head embarrassedly and smiled: "I resigned after a few years." This store has been open for half a year, half-dead, but fortunately, time is free. ”

"Hmm, hmm......" Qiu Shan followed Liu Qi to the store.

"Where are you now?"

"When you work as a journalist for a magazine, you can't stand up for hunger, and you're ready to roll up and leave."

"Oh, I really didn't expect to come to Xi'an at this time. This friend is also your companion? ”

"Uh-huh...... He was on a special mission...... Qiu Shan glanced at Ah Qi, saw that he didn't react, and then said, "Just call him Ah Qi." ”

"Okay, it's pretty spacious, so feel free. I'm going to write a program and we'll talk about it later. Liu Qi stared at the computer and was about to get up. Qiu Shan thought that he would become kraft candy if he stuck to the computer, and hurriedly said, "You have to do something for me first." ”

"What's the matter?" Liu Qi didn't look back, and asked while staring at the screen.

"Crack a microcontroller."

When Liu Qi heard this, he hurriedly turned around and laughed: "It's not a joke, right?" What MCU do you have? ”

Qiu Shan looked at Ah Qi and saw that he had taken out the bionic insect from his pocket.

Liu Qi was instantly attracted, leaned forward to look at it for a while and said, "Where did this thing come from...... Could it be that you are from the military? I heard that artificial flies are used in the spy wars between the United States and Russia...... How many beats per second does this bionic fly's wings have to beat? If you fly into the embassy to spy on intelligence, it is estimated that it will be a kilometer away, and you must have recording, navigation, and signal transceiver modules, which is ...... load."

Qiu Shan saw that Liu Qi's voice was excited, and knew that he couldn't stop when he encountered this kind of thing, so he hurriedly interrupted: "Liu Qi, see clearly, this is not a fly." ”

"Of course, of course not, this thing looks better than an artificial fly."

"Oh? We're going to get the data out there now, do you have any ideas? ”

"Hey, no problem. I used to work on single-chip microcomputers in the unit. ”

"That's great. But this kind of microcontroller is very special......"

"I know, I know." Liu Qi said as he pulled open the drawer of his dilapidated desk, and a bunch of electronic parts crackled out. He took out a small toolbox from the drawer, picked it up and puffed out his cheeks and blew it away, choking Qiu Shan with the dust that kicked up.

"What is this?"

"A microcontroller programmer combined with intrusive cracking methods." Liu Qi said and opened the toolbox.

Qiu Shan and Ah Qi looked inside, inside was a simple metal box with a square head and a square brain, there were some cables connected to small probes and the like on the side of the box, as well as data interfaces and knobs connected to the computer, there were several buttons on the box panel, and above the button was a slender LED LCD screen, which could display two to three lines of text.

Qiu Shan frowned and asked, "Where did this thing come from?" ”

Liu Qi smiled and said, "Homemade." ”

"Homemade?" Qiu Shan leaned over to the toolbox with a suspicious face.

"Yes. It's nothing complicated, even if it's an encrypted microcontroller chip, it doesn't lock the memory access, as long as you find the data bus of the memory, you can read the contents of the data line with a micro probe. Liu Qi said as he connected the toolbox to the power supply, took out a pair of tweezers and a small laser gun from it, and continued, "How about it?" Do you want to try it? ”

Qiu Shan was stunned by Liu Qi's words, looked at Ah Qi, and when he saw him nodding, he said, "Okay, let's do it!" Be careful, the information here is precious. ”

When Liu Qi heard this, he immediately became excited, moved a small microscope from the table, and then clamped the bionic insect with tweezers, put it under the microscope with its abdomen facing up, turned on the laser pointer, and a filamentous red light shot out. Liu Qi aimed the red light at the bionic insect's abdomen, and the resin was slowly cut open, revealing a two-millimeter-square circuit board after a while. Liu Qi took out the circuit piece, and it turned out that the back of the circuit piece was a miniature slot, which was connected to the voice generator of the bionic insect's head, the legs, and the controller of the poison storage sac.

Liu Qi's eyes were shining, and after turning over and over the circuit board under the microscope a few times, he pointed to one of the black squares one millimeter square and said: "This is the chip, and the data bus can be found after the epoxy resin is ablated off." ”

"Well, let's do it."

Liu Qi aimed the laser at the chip and ablated it back and forth, and a puff of light smoke rose from under the microscope. After a while, Liu Qi turned off the laser gun, put two probes with tiny electrode tips into a certain part of the chip and fixed them, then opened a notebook at hand, connected it to the metal box, and then pressed a few buttons on the panel, turned his head to look at Qiu Shan and Ah Qidao: "Okay." ”

Qiu Shan kept standing by and observing, but he didn't see that he was ugly, so he said, "Let's get it." ”

Liu Qi reached out and pressed the power switch of the notebook.

After a "tick", the computer enters the self-test, the cursor on the blue screen keeps flashing, and strings of binary codes continue to pour out from the bottom of the screen.

"What's going on?"

"Well, it's done."

Qiu Shan didn't see anything famous, and asked, "It's done?" Where is the content? ”

Liu Qi didn't answer Qiu Shan's question, staring at the screen and chanting: "Hello...... Mr. Lee Tai-lai...... Do you feel a lot of pain in your stomach...... Who is Lee Tae-rae? ”

Qiu Shan and Ah Qi both looked at Liu Qi in disbelief, unexpectedly that he had translated the binary code directly.

"Oh...... Go to Huangquan together in half an hour, ......" Liu Qi's treacherous voice sounded chilling.

“…… I don't want to hurt the esteemed ...... Cherish this moment...... Call the police, seek medical attention...... It doesn't change your situation...... Last Words...... See you in Huangquan. Hahaha...... Backbite...... Backbite...... Tick ......" Liu Qi laughed wildly and then made a "tick" sound in his mouth, which sounded extremely weird.

"What's in the memory?" Qiu Shan asked after Liu Qi calmed down.

"Yes. It's not complete, though, and I'll have to read it again. Liu Qi said and restarted the computer.

"Hello, Mr. Lee Tae-lai. Do you feel a lot of pain in your stomach......"

"It's okay, you won't have any pain after half an hour......"

"Look no further, I'm in your body. I will accompany you to die slowly in half an hour, and I am glad that we will go to Huangquan together. Amazing ......"

"You seem confused, so let you feel it again, three, two, one......"

"How? Doesn't it hurt? I don't want to hurt the esteemed professor, but you must believe what I say......"

"We have less than half an hour left, leave your secrets, and then meet death. Mr. Lee Tae-lai, I hope you will cherish the last days of your life. You can choose to call the police or seek medical attention, but I would like to remind you that this stupidity will not change your mortal situation. Well, I believe you still have to think about your last words, so you won't bother in the future, and we'll see you in Huangquan. Hahaha......"

"Tick...... Backbite...... Backbite...... Tick ......"

After Qiu Shan and Ah Qi heard Liu Qi read the message, they were so shocked that they couldn't speak for a while.

Qiu Shan was stunned for a while before asking, "That's all?" ”

"Yes, word for word...... Hmm, who is Lee Tae-lai? ”

"A historian." Qiu Shan replied casually, but his head spun rapidly. It turned out that Li Tailai did not call the police or seek medical treatment, which was caused by the threat of this bionic insect. Judging from what was just deciphered, it seems that the bionic insect was designed to force Li Tai to tell a certain secret. Is that secret hidden in that poem?

Qiu Shan looked at Liu Qi and Ah Qi in disbelief.

Liu Qi scratched his head and said, "Oh, historian...... This recording is played by a program that first makes the mechanical legs pop out and then starts playing the recording. Liu Qi pointed at the thin needle at the tail of the bionic insect with tweezers as he spoke, and continued: "The program has called the opening and closing switch that controls this needle three times, after the mechanical leg pops out, one minute after the recording is played, and thirty minutes later. ”

Ah Qi nodded, looked at the bionic worm for a while, and said: "The poison needle was injected three times accordingly, the first and second times made Li Tailai feel painful, and Li Tailai may have died when he was injected the third time." ”

Qiu Shan heard Ah Qi say this, and looked at him in puzzlement.

Ah Qi explained: "At about twenty-six minutes, Li Tailai began to cut open his stomach with a knife, trying to find this bionic worm, so he ......" Ah Qi paused and did not continue.

Liu Qi was surprised when he heard this, and said, "Then Li Tailai looks like he committed suicide...... Why would anyone want to kill him in this way? ”

"He seems to have some secret." Qiu Shan replied simply, looked at Ah Qi, remembered that he knew a lot of things, and at this time he could take the opportunity to ask, so he continued: "Ah Qi, what secrets do you think Li Tailai has?" ”

Ah Qi shook his head blankly and said, "I don't know. ”

Qiu Shan was quite surprised, he thought that Ah Qi should be very familiar with this matter, so he asked, "Then how do you know...... Did Lee Tae-lai call me? ”

Ah Qi was stunned and said slowly: "I got this news from other places. ”

Qiu Shan originally wanted to ask, but seeing that Ah Qi didn't seem to want to continue the topic, he had to give up for the time being.

At this time, Liu Qi reached out and pinched the bionic insect, and said in his mouth: "This insect is useless...... Why don't I look into it first, hehe, it's a good thing. ”

"No, watch out for Venom." Ah Qi stopped.

"Huh?" The bionic insect in Liu Qi's hand fell to the table again.

Ah Qi took tweezers to pick up the remains of the bionic insects, put them in a plastic bag, and put them in his pocket.

Liu Qi saw that Ah Qi was so cautious, although he was a little unsatisfied, but it was not difficult for him to be strong, he rubbed for a long time, pointed to the sofa and bed and said, "You guys rest and rest?" I'm about to get to work. ”

Qiu Shan raised his wrist to look at his watch, it was already four o'clock in the morning, at this time he only felt tired, couldn't hold back the yawn, saw Ah Qi sitting in the chair, his eyes looked at the air, it seemed that he was still thinking about something, and he couldn't care so much, he climbed to the sofa next to him and lay down, his eyelids were heavy, and he fell asleep after a while.

I don't know how long I slept, and the sound of crackling and tapping on the keyboard sounded in Qiu Shan's ears. When he opened his eyes, he saw Liu Qi sitting in front of the computer and typing. Qiu Shan looked at his watch, it was almost noon, looked around, but didn't see Ah Qi's shadow, so he got up from the sofa, walked behind Liu Qi and asked, "Where is Ah Qi?" ”

This shout startled Liu Qi. He turned his head and opened his two panda eyes and said, "Ah Qi? Oh, he's gone. As he spoke, he looked back at the computer. Qiu Shan followed his gaze and saw that the screen was full of lines of code.

"When did you leave? Did you leave anything behind? ”

"When? Seven o'clock, maybe six o'clock, about that time. He didn't say where to go. Liu Qi stared at the screen and said intently.

Qiu Shan walked up to Liu Qi, covered the computer screen with his hand and said, "I'm hungry, do you have anything to eat?" ”

"Ordered two takeouts, and it's almost there."

Qiu Shan retracted his hand, glanced at the shop outside, and said, "Is your shop fishing for three days and drying nets for two days, and closed for five days a week?" ”

Liu Qi laughed twice: "That's not it, at most open for one day and close for one day." There's so much at hand. ”

Qiu Shan secretly thought that if he did this business like Liu Qi, it would be a matter of time before he closed down. At this time, seeing that he was still staring at the computer screen, he had to say: "I'll go outside, how can I sell mobile phone cards?" ”

"Just walk in the direction of the school gate."

Qiu Shan walked out of the room, and the sunlight outside came in through the cracks in the roller shutter, illuminating the whole store like an electronic garbage dump. Qiu Shan walked through the shop, opened the small door and walked out, and the street was full of people on a sunny day.

Qiu Shan walked into a mobile phone store and bought a mobile phone card, and when he was about to walk back, he caught a glimpse of a small gift shop next to it, and after thinking about it, he picked out a pair of sunglasses, a baseball cap, a flashlight, and a few batteries in the gift shop, and then returned to Liu Qi's store.

The takeaway has been delivered, and after the two hurriedly finished eating, Qiu Shan knew that Liu Qi was probably going to the computer again, and said: "I'll go to Qianxian County in the afternoon, I don't have much cash on me, if you have money, borrow some, and pay it back when you return to Beijing." ”

"There are not many, there are still thousands of eight hundred." Liu Qi said as he took out a handful of miscellaneous things from his pocket, picked out all the hundred-yuan bills and handed them to Qiu Shan. Qiu Shan counted, it was only one thousand two, and secretly thought that Liu Qi's business was so good that he couldn't bear to borrow money from him, so he said, "Forget it." ”

"Don't, take it and take it, I'll enter the house as soon as the door of this store opens."

Qiu Shan thought to himself, with his awesome and shining skills, it was not a problem to eat with a mouthful, so he accepted the money with peace of mind and said, "Okay." My new phone number, make a note of it. I'll call you back when I get back to Beijing. After thinking about it, he said, "I have to change my clothes, pick out a coat for me." ”

"Okay." Liu Qi took out a jacket and said, "Let's make do with it." ”

Qiu Shan barely put it on, and although it felt a little smaller, it still fitted.

"By the way, what are you doing in Xi'an this time?" Liu Qi asked suddenly.

Qiu Shan saw that Liu Qi finally said something human, and said with a smile: "Interview, Li Tailai is dead, I have a reporting mission." ”

"What the hell is that friend doing?"

Qiu Shan smiled bitterly in his heart, he didn't even know who this Ah Qi was, and he couldn't explain it for a while, so he had to deal with it indiscriminately: "He came to investigate the cause of Li Tailai's death." ”

Liu Qi said "oh" and stopped asking.

"Well, then I'll go first, call us."

Qiu Shan put on sunglasses and a baseball cap, walked out of Liu Qi's shop, went to the street to hire a taxi, and went to the Chengxi Bus Station.