Apocalypse: I Built the Infinite Train-Chapter 172: External Armor Electric Blade Device

Carriage No. 7 – Inventory Check

Inside the storage room of Carriage No. 7, Chen Sixuan led her team in moving and counting all the survival supplies.

"172, 173... Xiao Li, put all the biscuits in C1 Zone," Chen Sixuan instructed while keeping track of the numbers.

"Got it, Captain Chen."

Captain Chen? Hearing this, Chen Sixuan pressed her lips together slightly, a hint of joy flashing in her heart. However, she maintained a serious expression and continued, "Put all the jerky into the freezer. Make sure it goes into the right section."

As she observed the different train carriages working in full swing, she made her way to Carriage No. 4, where she found Lin Xian.

"We've gathered quite a lot—food is in good supply, plus we found plenty of medical supplies and some weapons..."

Lin Xian, who was in the middle of assembling hydroponic racks and plant cultivation chambers for Carriage No. 4, nodded as he listened.

"Food and medicine are key. As for weapons, just collect whatever we can for now. By the way, did you find any Eerie Blood Crystals?"

With Lin Xian’s mechanical manufacturing abilities, he didn’t particularly need weapons unless they were of exceptionally high grade. However, Eerie Blood Crystals were a different matter—they were crucial.

At this moment, Shu Qin approached, holding a modified radio in her hands.

"This is strange. Even the Eerie Blood Crystals on the Dark Radio are missing, but the rest of the supplies are untouched."

Lin Xian's expression darkened. "That means some kind of creature must have devoured both the people and the crystals."

The fact that people and blood crystals were missing, yet the critical survival resources and the vehicles remained, sent a chill down his spine. Even if it had been Eerie Entities or a Zombie Horde, there should have been signs of a struggle—at least some traces of resistance.

Shu Qin nodded. "We arrived in Jiazhou a few hours earlier than you. The Black Night here seems... different from Yubei."

"Different? How?" Chen Sixuan asked.

"It might be related to the three Abyss Zones," Lin Xian speculated. "Even though staying further from the Abyss Tides gives us longer daylight hours, when night falls, we’re affected by the influence of Abyss Zones No. 3, 5, and 7. Things could get... complicated."

Carriage No. 7 – A Tea Enthusiast Amidst Chaos

At that moment, Lu Xingchen ran onto the train. He had just been on lookout duty, but seeing how busy everyone was assembling the train, he hurried over to Lin Xian.

"Brother Lin!"

"Speak."

"Remember that tea maker I mentioned earlier? Make sure to get me one! The water on this train is top-quality—I bet brewing tea with it would be divine!"

Lin Xian gave him a sidelong glance, genuinely impressed by his ability to focus on tea in the middle of an apocalypse.

Still, he didn’t object. Instead, he chuckled. "Once we’re done setting up, I’ll build you a dedicated tea station."

"A true kindred spirit!" Lu Xingchen's eyes lit up, flashing a dramatic "You get me!" expression. He raised a finger and declared, "With Brother Lin taking care of me, I, Lu Xingchen, shall protect humanity for all eternity!"

…Protect humanity for all eternity?

Lin Xian almost choked. There were barely thirty people on the train, and this guy was already making grand declarations about saving the human race.

Still, Lin Xian decided not to say anything. If nothing else, Lu Xingchen’s enthusiasm was a good thing. With the train’s firepower now upgraded, plus KIKI, Da Lou, and Lu Xingchen—three Evolution-Level Ability Users—their security had improved significantly.

The Birth of the PX-05 Engineering Robot

[Manufacturing Factory: Material Conversion Complete]

Lin Xian’s eyes lit up as he checked his manufacturing system. Wasting no time, he headed to an empty carriage to test out a new creation—

The PX-05 Engineering Robot!

This robot specialized in precise welding and assembly work, something Lin Xian had longed for back at the Spaceport. It would drastically boost efficiency and handle complex train maintenance tasks.

"Alright, let’s do this..." Lin Xian took a deep breath.

Light flashed as various high-precision materials hovered mid-air, piece by piece assembling before his eyes.

But this time, the process was slow. The materials kept shifting, and beads of sweat formed on Lin Xian’s forehead—

Yet, the robot’s core processor wasn’t even taking shape.

"Seriously?! This thing is that complex?"

With a sharp gaze, Lin Xian halted the manufacturing.

Ting—

A small black fragment dropped to the floor with a crisp sound. He wiped his forehead, picked it up, and realized—

It was just a tiny, unfinished piece of a microchip.

"Damn… looks like my Mechanical Manufacturing Level isn’t high enough."

[Mechanical Manufacturing: Level 2 (420/500)]

After crafting so many train components, his Mechanical Manufacturing Skill had jumped from 260 to 420, nearing Level 3.

"Guess I need to level it up first. I’ll try again tonight."

His concern was justified—he had underestimated the complexity of crafting an advanced robot. Even though it was just an engineering model, its intelligence and built-in thruster system made it far from a simple assembly project.

"That means even with the right materials, the difficulty of creation is still a huge factor. The 1130 CIWS will probably take even longer."

Letting out a deep breath, Lin Xian stepped out of the carriage.

Final Preparations Before Nightfall

Wooooong—

The black Infinite Train was being disassembled and reinforced. Overhead cranes lifted new defensive armor panels onto the train as upgrades continued non-stop.

"Alright, let’s finish up the heavy work first, then tackle the precision systems."

Armored carriages, living quarters, storage compartments, food distribution—these were the essentials. Securing them was the top priority so that if things went south, they could escape immediately.

Defensive upgrades always took priority. Their train’s armor had saved them countless times before, allowing them to survive total annihilation scenarios and escape to safety.

With an entire daylight cycle at their disposal, the train crew found the situation oddly unsettling.

Work continued from morning to late afternoon, and thanks to a team of dozens, the "Infinite Train" was finally taking shape—

12 carriages and two power locomotives fully installed.

The black armor plating now covered the entire train, and the dual-layer blast-proof doors gave it an impressive, high-tech appearance.

Inside:

Chen Sixuan and a group of women arranged food and kitchenware in the dining car.

KIKI and Shasha were busy decorating their personal space in Carriage No. 2.

The train’s nuclear-powered server was relocated there, and Lin Xian even built Shasha a weapons assembly bench.

Da Lou, Shu Qin, and others installed pipes for the water tanks, filtration system, and heating system.

In Carriage No. 4, Lin Xian recruited Zou Yunyao and other educated survivors to assist Ding Junyi with setting up the hydroponics system.

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Finally—

Ding!

Lin Xian finished installing infrared night-vision surveillance units on the train roof. Paired with the Electro-Optical Targeting System and Active Phased Array Radar, their external monitoring was now top-notch.

"Alright..." Lin Xian groaned, stretching his stiff muscles. Time was running short—he needed to finish all external defenses before nightfall.

"Only one thing left… the Outer Armor Electric Blade System!"