"Mr. Lin, are you absolutely sure about this? This is an abandoned Cold War-era air-raid shelter. It's damp, the ventilation system is prehistoric, and it's located in the middle of a barren wasteland. For 15 million, you could easily buy a top-tier luxury penthouse in the city center!"
The real estate agent wiped a thick layer of sweat from his forehead, panting heavily. It was only mid-March, yet the suburban sun was already vicious enough to bake the asphalt road, causing the air above it to twist and shimmer like an oven.
Lin Yan ignored the agent's endless babbling.
He stood calmly at the base of the rocky hill, his eyes locked onto the massive, rust-covered steel blast door. It was over four meters tall. He reached out, his slender fingers tracing the cold, heavy metal, feeling the rough, granular texture of the aged steel.
Three meters of reinforced concrete. Encased within the natural basalt rock of the mountain itself. The ultimate physical and thermal shield. "I prefer the quiet," Lin Yan replied, his tone devoid of any emotion. He withdrew his hand. "Bring me the contract. Full cash payment. I want the physical keys right now."
Looking into Lin Yan's eyes—eyes that held a chilling, unquestionable absolute authority—the agent swallowed his remaining sales pitch. Trembling slightly under the oppressive heat and Lin Yan's aura, he frantically pulled out his tablet to process the transfer.
Within ten short minutes, 15 million vanished from Lin Yan's bank account. In return, a heavy ring of brass keys dropped heavily into his palm.
The underground fortress was officially his.
As soon as the agent's car disappeared into a cloud of dusty exhaust, Lin Yan's phone began to vibrate violently in his pocket.
It was a barrage of notifications from the [R&D Elite Group (45 members)]. Messages were flooding the screen at a rate of ten per second.
[Chen Zhiqiang (R&D Director)]: @Lin Yan I heard you actually packed your bags and left? Good riddance. Our R&D department doesn't need a useless piece of trash who only knows how to talk theory. Oh, by the way, the "Glacier V1" cooling system just secured a 50 million pre-order contract from the Silver Lake Luxury Villa District.
[Chen Zhiqiang (R&D Director)]: Sure, you might have drawn the initial drafts, but the real commercialization was all my genius. I've already notified HR. We are deducting your entire performance bonus from last month. Consider it compensation for the company having to fix the 'logic errors' in your primitive code.
The messages didn't stop there.
[Chen Zhiqiang (R&D Director)]: Don't blame me for not warning you, Lin Yan. I've already spoken to the heads of several major tech firms in the park. With your arrogant attitude, throwing resignation letters at your superiors? You are officially blacklisted. No one in this industry will hire you. Good luck paying your mortgage in this garbage economy. Everyone else, take this trash as a warning!
Instantly, a wave of sycophantic bootlicking flooded the chat.
[Colleague A]: Director Chen is too merciful! That nerd should have rolled out of here ages ago!
[Colleague B]: Without Director Chen's leadership, that system would have never seen the light of day. Lin Yan actually thought he was some kind of misunderstood genius. Hilarious.
Standing in the sweltering 35°C heat, Lin Yan looked at the vicious, mocking words on his screen.
Instead of anger, a chilling, almost predatory smirk curled the corners of his mouth.
Deducting my bonus? An industry blacklist?
Lin Yan found it genuinely amusing. In exactly one month, when the global temperature shattered the 60°C mark, all the money in their bank accounts would become useless paper, too rough to even wipe their asses with.
Those billionaires in the Silver Lake Villas would soon discover a terrifying truth. The "Glacier V1" cooling system Chen Zhiqiang was so proud of had a fatal flaw. Under extreme, sustained 60°C heat, the cheap extruded aluminum pipes Chen used to cut costs would melt. The coolant would boil into high-pressure gas, and within seconds, the system would detonate like a thermobaric bomb, turning their multi-million dollar mansions into high-tech crematoriums.
"Enjoy your final carnival of ignorance," Lin Yan whispered to the screen.
He permanently muted the group chat, shoved the phone back into his pocket, and turned his attention to the heavy blast door.
RUMBLE—
With an ear-piercing screech of metal scraping against metal, the heavy doors parted. A gust of cold, stale air, carrying the scent of dust, ozone, and ancient concrete, rushed out to greet him.
The interior space was staggeringly massive. It was over two thousand square meters of cavernous emptiness, supported by thick concrete pillars.
Lin Yan's eyes instantly sharpened. The casual smirk vanished, replaced by the fanatical focus of a master engineer stepping into his ultimate domain.
He pulled a Leica 3D Laser Scanner from his tactical backpack and set it up in the center of the cavern.
Beep. A grid of crimson lasers erupted from the device, sweeping across the walls, ceiling, and floor. Millimeter-perfect topographical data streamed directly into his heavily encrypted, military-grade laptop.
"Numbers," Lin Yan muttered softly, "will never betray me."
On his screen, a blood-red countdown timer ticked relentlessly:
[Time until Extreme Heat Hell: 29 Days, 21 Hours, 45 Minutes.]
Sitting on a dust-covered wooden crate, Lin Yan opened his master blueprint: Project Eden-Frost. His hands blurred across the keyboard, bypassing normal web protocols and diving straight into the dark web and the highest-tier global industrial supply chains.
Phase One: Absolute Defense & The Core.
To survive a world that was literally catching fire, standard insulation was a joke.
Order: 50 tons of Aerospace-Grade Silica Aerogel. (The most powerful thermal insulator known to humanity. It would coat every inch of his walls).
Order: High-density Palladium-Silver alloy rods.
Order: Three units of Liquid Nitrogen Cryogenic Server Cooling Racks.
He wasn't building an air conditioner. He was building the true, ultimate form of his stolen design: A localized Micro-Fusion Thermoelectric Generator.
Phase Two: The Hand of God (Industrial Manufacturing Zone).
To build a fusion reactor and defensive weaponry from scratch, buying parts online wasn't enough. He needed to be able to create anything, out of thin air.
Order: Two German-engineered 5-Axis CNC Milling Machines.
Order: Three Industrial-Grade SLM (Selective Laser Melting) Metal 3D Printers.
Order: 5 tons of aerospace titanium powder and military-grade carbon fiber filament.
With the blueprints in his head and these machines in his bunker, Lin Yan was no longer just an engineer. He was a one-man arms factory. Whether it was complex reactor valves or custom-machined firearms, his 3D printers would forge them flawlessly.
Phase Three: The Dopamine Protocol (Ultimate Entertainment).
Lin Yan was a realist. Being locked in an underground bunker for years without entertainment was a recipe for psychological collapse. If he was going to survive the apocalypse, he was going to do it in absolute luxury.
Order: A 100TB Enterprise-Grade NAS Server Array. He immediately deployed automated web-crawlers to rip and download the entire Steam library of AAA games, thousands of high-definition movies, anime, and an offline backup of Wikipedia and human scientific knowledge.
Order: An 8K theater-grade projector system.
Order: Two top-of-the-line zero-gravity massage gaming chairs.
Within fifteen minutes, 12 million dollars vanished like water down a drain.
Suddenly, his phone violently vibrated. An unknown number flashed on the screen. It was a supplier from the industrial black market.
"Brother Lin! Have you completely lost your damn mind?!" a gruff, static-laced voice roared through the speaker. "Industrial metal 3D printers? Palladium-Silver alloys? What the hell are you building out there? An underground weapons factory or a missile silo?! And you're demanding delivery in three days? The freight alone is going to triple!"
"I don't lack money," Lin Yan's voice was like glacial ice, utterly devoid of panic or emotion. "I lack time. Can you deliver or not? If you can't, I will find someone who can."
"Alright, alright! You're the boss, it's your funeral," the supplier grumbled. "But seriously, man. The weather forecast says a massive rainstorm is hitting next week, and temperatures will drop. Buying all this extreme survival and cooling gear... you're getting paranoid."
Lin Yan hung up the phone without another word. The pale blue light of the laptop screen illuminated his calm, calculating eyes.
Rain?
According to his thermodynamic models, the moisture in the atmosphere was being flash-boiled, creating a massive greenhouse dome over the earth. There would be no more rain. In exactly five days, the first deadly wave of 45°C heat would strike the city, serving as the appetizer for the apocalypse.
By the time the temperatures hit 50°C, let alone triple the freight, you couldn't buy a single titanium screw even if you offered a mountain of solid gold.
Lin Yan leaned back, looking up at the rough concrete ceiling of his new underground kingdom.
He could already picture it. One month from now, the outside world would be a burning hellscape. People would slaughter each other for a sip of putrid, boiling ditch water. Chen Zhiqiang would be kneeling in the scorching sun, his skin covered in blistering burns, begging for mercy.
Meanwhile, Lin Yan would be lying back in his 22°C zero-gravity chair, sipping an ice-cold cola, playing GTA 6 on a 200-inch 8K screen, powered by an infinite fusion reactor.
Let the sun burn. Lin Yan thought. The thermostat of the new world is in my hands.