Siheyuan: I, Shazhu, started out as an army and became a general.

Shangganling, 597.9 meters high.

Before the morning mist had dissipated, the group, escorted by the guard platoon, trudged through charred gravel and shell craters, making their way toward the tunnel entrance.

Leading the group was the old marshal, followed by the operations director of the Volunteer Army headquarters, and a middle-aged man with thick-rimmed glasses, a refined-looking man named Chief Engineer Liu from the Ordnance Department.

"Boss, the situation ahead may be dire." The operations chief said gravely. "That madman Van Fleet has emptied the ammunition depot these past few days, and the hilltop has been lowered by two meters. We need to be prepared."

The old general remained silent with a somber face, but the horsewhip he gripped tightly in his hand betrayed his inner anxiety.

He Yuzhu is a fine knife; if he were to break it here, he'd be heartbroken.

The group arrived at the entrance of the tunnel.

The anticipated scene of corpses strewn across the fields and smoke filling the air did not materialize.

On the contrary, the disguised entrance actually looked like... an air-raid shelter?

"Who?" a low shout came from the spies at the cave entrance.

"Headquarters inspection!" the guard platoon leader replied.

As soon as the camouflage netting at the cave entrance was lifted, Zhang Dabiao's dark red face emerged, with half a toothpick still dangling from his mouth.

Upon seeing the old marshal, Zhang Dabiao was so startled that he dropped his toothpick and immediately stood at attention, saluting: "Greetings, Commander!"

The old general frowned at him: "Zhang Dabiao? What happened to you, kid? You've gotten so fat!"

Zhang Dabiao chuckled and scratched his head: "Reporting, sir, it's mainly because... the food is so good! I'll take you inside to see!"

Everyone looked at each other.

The food's too good? At Shangganling? Is this kid still half asleep?

Upon entering the tunnel, Chief Engineer Liu's eyes widened instantly.

Outside is a living hell, but inside is a hidden paradise.

Not only was there no suffocating stench of corpses or gunpowder, but the ventilation was good, and there was even a... stewed meat aroma?

The top and sides of the tunnel were covered with a strange cement that shimmered with a bluish light. It was cold and hard to the touch, and you couldn't even leave a fingernail mark on it.

"What...what kind of material is this?" Chief Engineer Liu couldn't help but ask, his professional instincts kicking in.

"Oh, that? Old He calls it high-explosive concrete." Zhang Dabiao said proudly, as if he had spat out the cement himself. "When the Americans' bombs hit it, all they hear is a bang."

The further they went, the more alarmed the old general became.

Ammunition depot, water storage tanks, and even a makeshift operating room. This isn't a temporary tunnel; this is a damn underground bunker!

Reaching the deepest command post, He Yuzhu was hunched over a table made of ammunition boxes, holding a pencil and intently drawing something.

There were several empty cans of luncheon meat next to it.

"He Yuzhu!" the old general called out.

He Yuzhu's hand trembled, and the pencil nearly broke. He turned around, immediately stood up, and saluted: "Sir!"

As he moved, several sheets of the stack of sketch paper covered with lines on the table slid off with a "whoosh" due to the airflow and floated to Chief Engineer Liu's feet.

The old general looked at the canned food on the table and laughed in exasperation: "You little rascal, He Laohu, I'm worried about you guys eating tree bark at headquarters, and you're getting special treatment here?"

"Reporting to the commander, these were all gifts from the Americans. It would be a waste not to eat them!" He Yuzhu said matter-of-factly.

At this moment, Chief Engineer Liu bent down to pick up the few pieces of paper, intending to glance at them casually and put them back.

However, it was only at first glance.

His pupils instantly contracted to pinpoints, and he froze on the spot as if struck by lightning.

The drawing on that piece of paper was neither a topographical map nor a battle plan.

Instead, it is a complex electronic component structure diagram.

The densely packed parameters and formulas looked like a book written in the heavens, but in Chief Engineer Liu's eyes, they were more tempting than a stunningly beautiful woman!

"This...this...this..."

Chief Engineer Liu's hands began to tremble violently, and his voice became so shrill that it changed tone, as if someone was strangling him.

"Old Liu, what's wrong?" The old general was startled by his reaction.

Chief Engineer Liu suddenly looked up, staring at He Yuzhu with a fanatical gaze, as if he were looking at a monster who had traveled back from the future.

"Did you draw this picture?"

He Yuzhu glanced at it, then calmly gathered up the remaining drawings: "Oh, I just doodled something when I had nothing else to do."

"Just scribbling randomly?!"

Chief Engineer Liu let out a scream that was comparable to a soprano, completely disregarding the dignity of a leader, and rushed to He Yuzhu in three steps, grabbing his wrist tightly.

"Do you know what this is? This is the waveguide design diagram for a phased array radar! And this... this is the molecular arrangement formula for a special high-temperature resistant alloy!"

"Even the Soviet Union, our big brother, is still in the exploratory stage! You call this 'random drawing'?!"

The entire command post fell into a deathly silence.

Although the veteran coach didn't understand the technology, he was all too aware of the significance of the words "radar" and "alloy".

Those are the eyes and bones of a great power!

Zhang Dabiao muttered under his breath, "I told you Lao He was a god descended to earth, but you wouldn't believe me. Look how scared this intellectual is, he can barely speak..."

He Yuzhu gently withdrew his hand, looking completely innocent: "Commander, I just felt that our radar was too outdated and was thinking of improving it."

"As for alloys... I did some research on materials science while repairing this tunnel."

I just casually... did I take a look at it?

Chief Engineer Liu felt that he had wasted half his life's education, wondering how the difference between people could be greater than the difference between people and dogs.

He turned to look at the old general, his tone more serious than ever before, even with a trembling plea.

"Boss, this man... can no longer be the frontline commander."

"Sending him to the front lines is a crime against the country! A colossal crime!"

The air inside the command post seemed to freeze.

The old coach stared at He Yuzhu, his gaze shifting from initial admiration to deep scrutiny, as if he were seeing this young man for the first time.

The "Tiger He" who struck fear into the hearts of American soldiers at Shangganling actually possessed such extraordinary talent.

"Xiao He," the old general's voice deepened, "tell me honestly, can you really build these things?"

He Yuzhu knew that he could no longer hide his abilities at this point.

It would be a huge waste to keep all this information from the system to himself. He must use this opportunity to obtain a ticket to a higher level.

"Commander," He Yuzhu straightened his back, his eyes sharp as knives, "Give me three months, and I can make our air defense radar detect whether a mosquito 300 kilometers away is male or female, provided we have the equipment and materials!"

"As for the alloy..." He pointed to the tunnel wall, "that's just the most basic application. If conditions permit, I can develop a material that can be used to make jet engine blades."

"hiss--"

A collective gasp filled the command post.

Chief Engineer Liu, his face flushed with excitement, grabbed the old marshal's sleeve: "General! Whether it's true or not, we must let him go back to China and try it! Even if only one-tenth of it is true, our country's military industry level can still force the Soviet Union to take the lead in the world by twenty years!"

The old coach remained silent.

He couldn't bear to part with it.

Such a valiant general would be a pillar of strength on the front lines.

But he knew even better that the outcome of a single battle could not determine the fate of a nation.

Technology, however, is the true backbone of a nation.

"He Yuzhu, listen to my command!" the old general suddenly shouted.

"arrive!"

"I hereby order you to immediately resign from your post as Commander-in-Chief of the Special Engineering Command. Zhang Dabiao will act as your successor!"

Zhang Dabiao was taken aback: "Huh? Commander, I can't do it..."

"Shut up!" The old general glared at him, then looked at He Yuzhu again. "Pack your things and come back to headquarters with me immediately. Prepare to return home!"

He Yuzhu's heart stirred.

Going back to China? That's fine too.

On the Korean battlefield, we've done all the posturing and won all the battles we needed to fight.

Now, if he goes back to the military industry, that would be the ultimate form of a game-changer.

And... those beasts in the courtyard must be jumping around happily right now, right?

"Yes, sir!" He Yuzhu saluted, then hesitated for a moment, "But sir, before I leave, could I leave Van Fleet a souvenir?"

The old general raised an eyebrow: "What do you want to do?"

He Yuzhu's lips curled into a wicked smile, a smile that sent a chill down Zhang Dabiao's spine.

"It's nothing, I just felt it would be impolite to leave like this. I wanted to give them a... fireworks display."

That night.

A strange silence suddenly fell over Hill 597.9.

There were no sniper shots, no sniper cannons.

The American positions opposite became tense; once that devil codenamed "Tiger" quieted down, nothing good was coming.

Three o'clock in the morning.

He Yuzhu stood at the entrance of the tunnel, holding a simple homemade megaphone in his hand—which he had improved using the acoustic knowledge given to him by the system, and which had extremely strong penetrating power.

"Hey, you American lads over there, can you hear me?"

The stuttering English, carried by the night wind, clearly reached the ears of every American soldier.

"I am Tiger."

"Whoosh—"

The American positions instantly erupted into chaos. Countless men grabbed their guns in terror, huddled in trenches, and broke out in a cold sweat.

"Don't be nervous." He Yuzhu's voice carried a hint of teasing. "I'll sing you a lullaby. Sweet dreams."

After he finished speaking, he made a hand gesture.

The mortar positions behind them had already been adjusted to the correct parameters.

This time, however, the shells loaded were not ordinary shells, but a special "illumination shell + white phosphorus + high explosive shell" combination made by He Yuzhu, with the fuse set to detonate at different altitudes in the air.

"put!"

"Bang bang bang bang!"

Dozens of shells roared out, streaking like shooting stars.

Instead of exploding upon landing, they burst into brilliant bursts of light above the American positions, illuminating the night as if it were daytime.

Immediately afterwards, high-explosive bombs detonated at a specific rhythm.

"Boom! Boom! Boom—Boom—Boom!"

It wasn't a chaotic explosion.

The sounds actually formed a faint melody.

A melody that stirs the blood of all Chinese people and terrifies all enemies.

The flames from the explosion danced in the night sky, like a roaring dragon.

On the American positions, everyone was stunned, their mouths agape, forgetting to breathe.

Is this the ruthless killer? He's actually using cannonballs... to perform?

What arrogance! What confidence! What...disregard for human beings!

"Goodbye, Van Fleet." He Yuzhu put down the megaphone, turned and walked into the dark tunnel, leaving only a dashing silhouette.

"Next time we meet, I won't be making these little firecrackers."

"That's a huge thing that could blow up your whole hometown."

But at this moment, the US military's nightmare had only just begun.

As the explosion occurred, the clusters of dazzling auroras began to plummet rapidly.

A second explosion occurred 20 meters above the American troops, ejecting white phosphorus dust that resembled lava poured from hell, igniting everything in its path and sending screams echoing through the night.

The air began to fluctuate violently. Van Fleet grabbed his own neck and rushed out of the tent. He felt a tightness in his chest, as if the air in his lungs had been instantly sucked out by an invisible hand!

Only one thought occupied his mind, a word that chilled him to the bone.

Thermobaric bomb!