A nation's industrial development begins with junior engineers.

"Haha, yes, but not entirely! Time is of the essence, we can't do it, and we don't have the time to make any collectors."

"The comrades on the front lines are fighting the enemy to the death, wearing only thin clothes and going hungry!"

As they talked, Zheng Aiguo started to talk a lot.

Their solution was to attach their cotton-padded coats to the window, leaving a small observation opening next to the driver's seat.

The chimney was also blocked with a cotton-padded coat soaked in water.

Block the chimney!

Zheng Aiguo smiled smugly: "That's right, once you block it, you start a fire, and it has to burn brightly!"

"The pressure in that furnace is so high! Aren't you afraid the boiler will explode? And there's the risk of flue gas backflow!"

Jiang Xia was so shocked that he forgot to chew his bun and looked around at the small driver's cab.

With cotton-padded clothes covering the entire area, and the reduced combustion efficiency due to the blocked chimney, how unbearable must the backflow of high-temperature flue gas be?

It's like how people in Sichuan province smoke cured pork, right? The person in the driver's cab is that piece of meat!

Moreover, everyone is well aware of what happens when coal is not fully burned.

This isn't smoke. It's clearly poison gas!

And it was a highly toxic gas at an extremely high temperature!

Ordinary people would run away as fast as they could, but they just buried their heads and charged in headfirst?

"That's exactly the kind of smoke I want!" Zheng Aiguo explained.

It turned out that they hid in the tunnel during the day, leaving someone outside to keep watch, and then they started setting fires at night.

Upon hearing the roar of airplanes in the distance, they began to build a fire.

After the plane circled two or three times and found no target, it flew away. The air pressure in the train boiler was also close to exploding.

At this point, the train starts moving and charges forward with all its might.

After traveling several dozen miles, the big-nosed plane followed the sound.

But the plane only knew there was movement below; it couldn't see the target because the firelight was obscured.

While the plane is circling and observing, it can travel another few dozen miles.

But Big Nose wasn't stupid; realizing something was wrong, he threw flares down below.

Once the flares come down, there's no hiding place anymore. Especially those with parachutes.

But, wasn't all that holding back the smoke for so long just for this moment?

All the cotton-padded coats in the driver's cab were removed, the windows were wide open, and the wad of cotton-padded coat in the chimney was also taken out.

Instantly, thick black smoke billowed out, coalesced, and enveloped the entire train.

It was as if they had pulled out a giant smoke bomb.

The big-nosed plane was dumbfounded; how could it shoot down a target it couldn't see?

It's nighttime now!

Let's move up to outside the smoke. The area shrouded in smoke is completely obscured; it's almost like a "fog of war."

Lower your altitude, and it will be pitch black; night flying is not an easy task!

The helpless big-nosed plane could only straf it based on its memory, then fly over the black smoke, shake its wings, and lay two more eggs as a token gesture.

The train, taking this opportunity, has already gone far away.

"That time, we transported a full 15 railcars of goods!"

"Ten train cars of cotton-padded coats, five train cars of fried noodles! Hahaha, that's great!"

"Later, we summarized our experience and reported it. Many comrades adopted this method! During that period, we transported a lot of supplies to that plain!"

"That's awesome!" Jiang Xia excitedly hugged Tie Jun.

"You're amazing!"

Zheng Aiguo waved his hand and coughed for a while.

"This is nothing, just opportunism. It won't work after a while. That big-nosed sly fox quickly came up with a way to target us."

"Ah!" Jiang Xia and Tie Jun's hearts jumped again.

Although that period has passed, listening to Zheng Aiguo's account still makes one anxious.

“They have a lot of planes, and they used to fly in pairs. After we used this method, they started flying in groups of seven or eight.”

"Drop bombs down wherever you see smoke!"

"A whole bunch of bombs came crashing down, they didn't care whether they hit their targets or not, they just went at it!"

"If you bomb hard enough, you're bound to hit the mark a couple of times, right?"

At this point, Zheng Aiguo's coughing intensified, so much so that he bent over...

Old Zhao sighed, walked over to him, and patted him on the shoulder.

Jiang Xia felt a surge of heat throughout his body, and his throat tightened with emotion.

Tie Jun gritted his teeth, and with each shovelful, he seemed to be using all his strength.

Zheng Aiguo sat up, looked at their red eyes, and smiled with relief.

"What's there to be discouraged about! They have brilliant strategies, but we don't have any ways to overcome them!"

"The locomotives in front were almost destroyed, so Big Brother sent in this batch of 131. It just so happens that they have the automatic coal feeder you mentioned."

"When this thing is turned on, the amount of smoke is several times greater than what we can produce when we try to suppress it with our cotton-padded clothes! Plus, we don't need to attach so many carriages anymore, just one or two, and we can just pull it up and go! It's very agile!"

"Big Nose was furious! He even threw a bunch of flyers at us once. Hey, what did it say again? Old Liu, do you remember?"

Liu Hongqi kept his eyes fixed on the instrument panel.

"Remember!"

"Our bombs can break steel and shatter iron. The Communist soldiers and workers repairing the railway, you shouldn't shed your blood and sweat and sacrifice your precious lives in vain..."

"Hahaha!" The three men laughed in unison.

"Pah! Employees? Tell them who we are?"

"We are the Railway Corps!"

"We are the working class! Laborers are the most glorious! Hahaha~~~ cough cough cough~!"

After a period of wild shouting, the veterans returned to calm.

Zheng Aiguo sat back in the driver's seat and told Liu Hongqi to start eating.

During the meal, Liu Hongqi explained to the two young men what "crossing the river by pushing against each other" and "segmented transportation" meant.

These logistics soldiers' unique methods ensured that the logistical needs of the soldiers at the front were met to the minimum standard.

However, Liu Hongqi talked most about the other soldiers who were repairing the railway.

"Without them vying to lay the tracks, we train drivers would be crippled!"

“At first, the big nose was blown up during the day, and they started repairing it in the evening. They repaired it until late at night, and when the road was open, we set off under the cover of darkness.”

"Later, the big-nosed planes intensified their bombing, often sending seven or eight planes to bomb a single line. If we waited until evening to repair it, it would be too late. So they would hold onto the rails, hide under the roadbed and in the woods, and get up there as soon as the bombing was over!"

"But that damned big-nosed guy is so vicious! When they realized they couldn't defeat us by bombing, they dropped cluster bombs!"

Do you know what a cluster bomb is?

Jiang Xia nodded, tears streaming down her face: "It's one of those things that contains lots of tiny bombs. Some even have delayed detonators, so they only explode after a while!"

"Oh dear! The soldiers were in deep trouble! At first, they all thought it was a dud, so they just tossed it aside and didn't pay any attention to it, busy laying tracks. Who knew it would explode in the middle of the night? A troop transport train just happened to be passing by... Oh!"

Liu Hongqi's mottled hand gently stroked Jiang Xia's cheek, wiping away the glistening tears.

"Later, the soldiers realized this was a deadly thing and handled it with extra care. But there were just too many of these damn things."

"And this thing is strange too. Some of them explode as soon as you poke them with a stick, while others only explode when a person gets close."

"To ensure the vehicle could continue driving, they simply rolled over themselves..."

Jiangxia burst into tears.

Zheng Aiguo listened, gritted his teeth, and slammed the steam whistle.

"Waaaaah~~~~~~~~~"

The sound of the steam whistle echoed through the green hills.

The pines and cypresses on the green hills stand tall and straight.

A gentle breeze rustled through the air, as if in response to something.

We remember the heroes who charged into battle, but let us not forget that indomitable "invisible force."