Chapter 86, Puzzle Piece 1
Chapter 86, Puzzle Piece 1
The next day, in the afternoon, arrived.
After seeing Kim Minjung off, Jiang Yan came out of Yongsan Station.
His destination today is the Digital City in Longshan District.
That is Seoul's largest distribution center for electronic devices.
He had everything from phone screen protectors to mining rig graphics cards. After parking his car, he picked up a plain-looking canvas bag and took the escalator to the sixth floor.
On the sixth floor, to the left is the laptop section, and to the right is the network equipment section.
Jiang Yan turned right, passed through rows of shelves filled with routers and switches, and finally stopped in front of a shop in a secluded location but with a large storefront.
The sign reads: Dr. Han's Cybersecurity, with a line of smaller print below.
Enterprise-grade security solutions, overseas dedicated lines, VPNs, and anonymous servers.
There was only one man in his forties in the shop, wearing thick black-rimmed glasses, who was soldering a circuit board with his head down.
Hearing footsteps, he didn't even look up and said, "Feel free to look around, the prices are all on the tags."
Jiang Yan ignored the other items and went straight to the counter. "Dr. Han?"
"It's me." The man put down the branding iron, adjusted his glasses, and sized up the young man in front of him. "You are...?"
Jiang Yan took two bottles of foreign liquor out of his canvas bag and placed them on the counter. He then took out an envelope and pushed it over, saying, "Brother Zheng Huan sent me."
Dr. Han picked up the envelope, opened it, took out the letter, glanced at it, and raised an eyebrow slightly.
He glanced at the two bottles of wine again, then stood up, walked to the shop entrance, pulled the roller shutter halfway down, and then came back to sit down.
"Tell me, what level of security do you need?"
Jiang Yan sat down on the other side. "The highest level, personal level, not enterprise level, but the security requirements are higher than enterprise level."
"Multi-country IP redirection is required, with at least five layers of proxy links. All operation records must be destroyed in real time and no logs should be left on any server. In addition, an offline cold wallet solution is also needed, which allows for offline operation and physical isolation."
After listening, Dr. Han remained silent for a few seconds, then took off his glasses and wiped them with the corner of his shirt. "This level of security solution isn't cheap."
Jiang Yan pushed the canvas bag forward.
Dr. Han glanced down and saw that the bag was filled with neatly stacked cash. He reached out and rummaged through it; the 50,000 won denominations were roughly estimated to be worth 30 to 40 million won.
Dr. Han closed the canvas bag, put his glasses back on, and lingered on Jiang Yan's face for a long while.
"There are some things I shouldn't ask, but you look to be only around twenty. Do you know who this level of security is usually prepared for?"
Jiang Yan smiled slightly, "Drug dealers, money laundering gangs, or financial fraudsters preparing to abscond with the money."
Dr. Han pushed up his glasses and suddenly chuckled.
He picked up the canvas bag and two bottles of liquor together, stuffed them into the safe under the counter, then stood up and dusted off his hands: "Alright, since you know, I won't say any more. Come with me."
He led Jiang Yan through the back door of the shop and into a windowless studio.
The room was dark, with only the server indicator lights on the walls flashing red and green dimly, like a silent electronic starry sky.
"What you need, will be done within three days."
Dr. Han pulled up a swivel chair and sat down, his fingers clattering across the keyboard. "As for the hardware, I'll provide you with a dedicated laptop. The system is a modified Linux that I've removed, with all background services disabled and only the essential functions retained. I'll set up a six-layer IP link for you; the extra layer is a free gift from me."
"In addition, the cold wallet uses the most basic paper wallet solution, with the private key engraved on a titanium alloy plate. It is fireproof, waterproof, and EMP-proof. You can find a good place to hide it yourself."
He paused, then turned his head, his glasses reflecting the dim light of the screen: "But there's one rule you have to remember."
"Please speak."
"No matter what you're doing, if you find anything wrong, immediately disconnect from the internet, unplug the power, and physically destroy all equipment. I'm not kidding you; every year in this industry, there are self-righteous people who fall into the same trap."
Jiang Yan nodded to indicate that he understood.
three days later.
Jiang Yan sat at his desk in his rented room, in front of an unremarkable black laptop with an IP address displayed in the lower right corner of the screen.
It automatically switches every few tens of seconds, sometimes showing a server in Switzerland, sometimes in Singapore, and sometimes a library network in a small town in Iceland.
He divided the titanium alloy plate of the cold wallet into three parts: one part was hidden in the compartment of the desk drawer, and the other part was buried under the plump succulent on the balcony.
There was another one. He thought for a moment, then got up and hid it inside the largest Kuromi doll in Kim Minjung's room.
After all the preparations were completed, Jiang Yan did not start immediately.
He read through Lin Yoona's "Exclusive Bitcoin Investment Operation Plan" from beginning to end again, this time focusing not on the strategy and returns, but on the risks.
Yoona clearly considered everything very carefully.
The first phase involves buying in evenly over six months, with each purchase not exceeding 0.5% of the day's trading volume. This is to avoid large buy orders causing market fluctuations.
All purchases are immediately transferred to a cold wallet to prevent the exchange from being hacked or frozen.
In the second phase of "kimchi premium arbitrage," she even marked the specific price range for each batch sold.
However, even the most comprehensive plan cannot withstand the variables in actual operation.
Jiang Yan spent the entire night mentally simulating all the transaction nodes.
From registering an exchange account to depositing fiat currency, placing buy orders, and transferring funds to a cold wallet, I went through each step in my mind at least ten times.
At four o'clock the next morning, he pressed the confirmation button for his first purchase.
The numbers on the screen flickered; one Bitcoin was traded for $430.
"So cheap?"
Lin Xiaolu appeared behind him without him noticing, staring at the number on the screen. "Over four hundred dollars... I can't even afford a decent coat for that price."
Jiang Yan ignored her and continued operating, making the second, third, and fourth strokes.
The amount and timing of each purchase are strictly in accordance with Yoona's plan; never be greedy.
By the time the sky began to lighten, the cold wallet already contained more than a dozen bitcoins.
Jiang Yan closed his laptop, rubbed his sore eyes, stood up and stretched his stiff shoulders, then turned to look out the window.
The morning in Hongdae was hazy and gray.
Lin Xiaolu looked at the black notebook and suddenly said, "Won't that Dr. Han tell on us?"
Jiang Yan mentally reviewed all the security measures, from Dr. Han's appearance to the servers covering the walls of the studio, from Ahn Jung-hwan's introduction to his own assessment.
"No, he's been in this industry for almost twenty years. If he hadn't kept his mouth shut, he would have been drowned in the Han River long ago."
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