"Professor Qiu, was that a means of the train or a means of Master Mang?"

"It was definitely a means of the train, isn't that obvious? Professor Qiu, will we ever possess such abilities in the future?"

"I want to perform sword flight too!"

Professor Qiu smiled as he looked at the students and said softly, "This is a unique ability of Master Mang. The Constant Star Train has developed to this point, relying not only on Master Mang's wise decisions, unparalleled wisdom, Thunderbolt-like methods, but also this unrivaled strength."

"Remember, children."

"It is we who need the Constant Star, not the Constant Star that needs us."

"Even without us, Master Mang would still be Master Mang, still able to live carefree in the apocalypse."

"But what would happen to us without the Constant Star, I believe you all know, right? Professor Qiu himself only has the opportunity to stand here and teach you after joining the Constant Star, with daily provision of food and clothing."

"Safety is guaranteed, and even the dignity of personality, which is quite luxurious in the apocalypse, I have obtained."

"Therefore, I hope everyone understands."

"The Constant Star spends a great deal of resources cultivating you, do you intend to just comfortably enjoy these resources?"

"No." A male student suddenly slammed the table, stood up, neck veins bulging as he shouted loudly, "Once I successfully graduate and join the guard team, I will always charge to the forefront in every battle, killing every enemy daring to oppose Master Mang!"

"Me too! I will tell Master Mang, I won't eat his food for nothing!"

"Blood will testify loyalty!"

Even the female students stood up one by one, eyes slightly reddened as they declared, "Professor Qiu, before meeting Master Mang, we lived in hunger and cold, this kindness we'll never forget. Just like you said, the Constant Star is the only train in the apocalypse still carrying on human civilization. For the sake of human civilization, for Master Mang, for the Constant Star, we will not hesitate!"

"Good."

Professor Qiu looked at the students, slightly moved, he pounded his right fist on his chest and said solemnly, "Always loyal to Master Mang, loyal to the Constant Star!"

The students followed suit, pounding their right fists on their chests, their reddened eyes shouting hoarsely.

"Always loyal to Master Mang, loyal to the Constant Star!"

"Loyalty!"

"Loyalty!"

...

Meanwhile—

Chen Mang sat alone inside the train compartment, looking at the help information sent by Er Dan through the Train Radio.

Installing the "receiver" and similar odd jobs didn't need him to handle, the people below would do it well.

"Master Mang, I've encountered an Adventure Map, but I can't complete the mission, I'm requesting assistance!"

"This guy..."

Chen Mang glanced at the screen on the control console, he had just entered Crisis Valley, it had only been about a week, and he had dug a mine, strolled around the Train Tunnel, and now Er Dan found another Adventure Map?

Does this guy really have some luck on his side?

"What mission?"

Er Dan didn't type it out but his voice came through the walkie-talkie of the Train Radio.

"Master Mang!"

"This is how it is, the process is a bit long, I'll make a long story short, my work is just strolling around, I also enjoy strolling around, originally I love to find Adventure Maps..."

"You really aren't making it a long story short." Chen Mang silently interrupted.

"Uh...so I was strolling around and encountered a tombstone, it's the most conspicuous Adventure Map I've ever seen, and then when my train landed beside the tombstone, the screen displayed that I accepted a mission."

"I'm not the first one, there should have been a lot of people before me who accepted it, it looks like an Adventure Map with no requirements, and also quite plain. I'll send the mission content to you, Master Mang, you have a look."

...

"..."

Chen Mang looked at Train Radio, at the mission sent by Er Dan.

-

"Wilderness Tombstone Adventure Task."

"S-level difficulty": Your train needs to mine a Level 1 iron ore within 72 hours, reward unknown.

"A-level difficulty": Your train needs to mine a Level 4 iron ore within 72 hours. Reward unknown.

"B-level difficulty": Your train needs to mine a Level 3 iron ore within 72 hours. Reward unknown.

"C-level difficulty": Your train needs to mine a Level 2 iron ore within 72 hours. Reward unknown.

"D-level difficulty": Your train needs to refrain from mining any iron ore within 72 hours. Reward unknown.

-

The voice came from Er Dan through the train walkie-talkie: "My train doesn't have any slaves anymore, can't mine, but if Master Mang isn't busy right now, we can go together to find the train that was just mining Level 4 iron ore."

"Rob them of their Level 4 iron ore, then it will be possible to mine Level 4 iron ore."

"The mission doesn't say you have to mine one complete ore, half should count."

"..."

Chen Mang's face became somewhat peculiar as he looked at this task list; after a while, he picked up the walkie-talkie and said, "Isn't Level 4 iron ore just A-level difficulty? Why not choose S-level difficulty?"

"You chose A-level difficulty?"

"No need to choose, there's no option to choose, whichever difficulty mission is completed, settlement is according to that." On the other end of the walkie-talkie, Er Dan paused for a while helplessly, "Master Mang, this is the blue area 'Crisis Valley,' the lowest iron ore is Level 2, there's simply no Level 1 iron ore."

"But since there is an option for Level 1 iron ore in the mission, this means Crisis Valley definitely has Level 1 iron ore, just extremely rare, possibly rarer than Level 4 iron ore. I've been strolling for so long, encountered one Level 4 iron ore, but haven't seen a single Level 1 iron ore."

"What did you call me just now?"

"Master Mang."

"I sent you the coordinates, come find me, let me show you the foundations of Master Mang."

"Huh?"

"Come quickly."

...

After cutting off communications, Chen Mang then spoke, "Stop manufacturing Level 4 iron ore, start manufacturing Level 1 iron ore."

"Yes." Ai's voice quickly came from inside the train.

It's normal for Crisis Valley not to have Level 1 iron mines. After all, back when he was mining a Level 1 iron ore on the Tieling Wasteland, it took him a good ten days, only acquiring ten thousand units of iron ore.

In Crisis Valley.

A train, if it takes over ten days to mine ten thousand units of iron ore.

Then the train should starve to death...

The mineral extracted isn't enough to make food for the slaves and maintain the daily operation of parts for these few days.

The higher the grade of the train.

In a non-combatant state, the amount of iron ore a train consumes daily to maintain normal operation isn't a small number. If they go to war, then they can only pray that they win. Winning a battle can recover some losses, but if they lose, even if they escape on the spot, it would eventually lead to doom.

Take the Constant Star, for example.

The daily operation costs of the train combined with food for over 5000 people, along with cigarettes, nuts, cola, etc., and the normal operation of various parts, approximately come to 14,000 units of iron ore daily.

Equivalent to daily consumption of one Level 1 mine.

Of course, this is without the "Solar Energy Panels." This component covers many daily consumptions; currently, the train's actual daily consumption is about 6000 units of iron ore.

...

Half an hour later.

The Target Detection Radar showed a train speeding through the air in the direction of the Constant Star at extremely high speed.

Soon—

A short and fierce train head stopped in front of the Constant Star, and the sonic boom sound gradually followed.

Er Dan jumped down from the train and strode towards the Constant Star, standing below the train compartment, looking up at Chen Mang seated in the chair, feeling puzzled and saying, "Master Mang, my radar didn't detect any nearby Level 1 iron mines."

"Are they perhaps deep underground?"

"Come with me."

Chen Mang jumped jovially off the train compartment, stood beside Er Dan, and walked towards the door of the Constant Star's Carriage No. 2, "Let me show you the foundations of the Constant Star."

At the next moment!

The door of Carriage No. 2 opened, and as Er Dan followed Master Mang into the carriage, his gaze was almost instantly attracted to the hundred heavy machine guns mounted on the ceiling. He stiffly stood where he was, eyes blankly murmuring.

"Master Mang..."

"Your foundations are indeed terrifying..."

"Honestly speaking, Master Mang, do you fear ghosts and can't sleep at night..."

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