A courtyard house; Li Yunlong, a subordinate of the deputy director of Harbin Military Engineering I

Zhang Renfeng turned to page 50:

"Look at this one."

The Type 59 100mm anti-aircraft gun is equipped with a VT proximity fuse and has an effective firing range of 10,000 to 13,000 meters.

The VT fuse does not require a direct hit; it detonates automatically at a distance of about 20 meters from the target, and the fragmentation coverage is enough to turn a fighter jet into a sieve.

Its operational range can cover 3,000 to 12,000 meters, specifically targeting the F-86 at medium to high altitudes.

This proximity fuse is probably familiar to you...

Old Chen's brows relaxed slightly, and he traced the lines of text with his finger, as if trying to imprint those numbers into his mind.

Zhang Renfeng didn't stop; he turned to page sixty-eight of the document and tapped the last paragraph with his index finger:

"SAM-2, effective firing altitude 3,000 to 20,000 meters."

We cannot directly put it on the production line at present because we lack the supporting radar system, but we can first bring over a battalion's worth of equipment and use combat data to reverse engineer the training syllabus.

It can cover an altitude range of 12,000 to 18,000 meters, which is beyond the reach of large-caliber anti-aircraft guns.

The three types of artillery, when used together, can basically fill the gaps in air defense.

Old Chen closed the file, placed it on the table, pressed his palm on the cover, and slightly tightened his fingers.

He remained silent for a long while before speaking, his voice lower than before, but an uncontrollable tremor seeped through his words:

"You've blocked off all the high, medium, and low altitudes."

Below 30,000 meters there are no blind spots, below 10,000 meters there is combined coverage from twin 37mm and 100mm guns, and above 10,000 meters there is the SAM as a backup.

No matter how fast the F-86 flies, once it enters this range, it can't avoid it.

Zhang Renfeng picked up his enamel mug, took a sip, and said casually but firmly, "The plan is fixed, but people are flexible."

Once this equipment arrives, we'll test it in several real-world battles to refine the positional layout and firepower allocation. Only then will the system be truly operational.

Old Chen looked up at Zhang Renfeng, his expression changing from surprise to something else, like a stone that had been dropped and then suddenly warmed up.

"What you brought back from your trip was truly substantial."

Zhang Renfeng waved his hand:

"It's not over yet. While I was in Suzhou, I received a message from East China through a secret contact—"

There might be a war on Dongshan Island.

He put down the enamel mug and his tone became more serious: "Given the current situation, the other side will most likely use its air force to suppress us first."

Our Second Artillery Corps urgently needs to test the effectiveness of this air defense system in actual combat, and this is the best opportunity.

I don't want land battles, I don't want naval battles, I only want air battles.

Old Chen was still immersed in the excitement brought by the plan, but upon hearing this, he sat up straight, his cane tapping on the ground:

"What are your specific plans?"

"You step in and tell Lao Liu from the Air Force to hold back for now, and push the Second Artillery Corps' air defense forces up."

After several battles, the effectiveness of the proximity fuse and the 100mm anti-aircraft gun can be verified in actual combat, and the first batch of real combat data for the SAM missile can be accumulated. A win-win situation.

After hearing this, Old Chen didn't rush to answer. He leaned back in his chair, his cane resting across his knees, his gaze fixed on the crossbeam of the tent roof, as if weighing its weight on a scale.

He spoke after a long pause, his voice not loud, but every word carried a firm and resolute tone:

Zhang Renfeng nodded and did not continue the topic.

He stood up and walked to the tent entrance, lifted the curtain and glanced at the sky outside. The clouds over the sea were very low, and the wind was blowing in from the north, carrying a chill.

He turned around and smiled at Old Chen: "Alright, stop looking so serious. If you really want to help, go back and keep a close eye on the power plant project; that's the long-term solution."

Provoked by his words, Old Chen's serious demeanor dissipated. He stood up, leaning on his cane, walked to his side, patted him on the shoulder, and said in a voice with the warmth of an older brother to a younger brother, "You are a peerless hero."

Zhang Renfeng glanced at him sideways, a slight smirk playing on his lips: "I wouldn't call myself a peerless patron. The truly peerless patron is on the other side, waiting for us to use artillery to invite him."

Old Chen paused for a moment, then burst into laughter, tapping his cane twice on the ground. His laughter echoed through the tent, making the corner of the document on the table tremble slightly.

He laughed for a while before stopping, wiping his eyes with his sleeve, and taking a deep breath:

"Alright, you rest first, I'll go sort this out."

In Zhang Renfeng's view, he was Lao Chen's beast of burden, but wasn't Lao Chen also his beast of burden?

In the history of our army, there have been many such partners, but a partnership like Chen and Zhang is absolutely unique.

I just hope Old Chen lives a long life and can truly witness the rise of national defense!

To truly witness the magnificent spectacle of ten thousand swords ringing out in unison!!!

Old Chen returned to his tent, leaned his cane against the table, plopped down in a folding chair, pulled out the hardcover notebook from his coat pocket, turned to a new page, paused briefly on the paper with his pen, and then began to write rapidly.

The handwriting was a bit messier than usual, but the irrepressible surge of emotion seeped out from between the lines:

Today, I had a detailed discussion with Feng about air defense strategies, and I was amazed at how thoroughly he had considered everything. Twin 37mm anti-aircraft guns lock down low-altitude targets, 100mm VT guns cover mid-altitude areas, and SAM missiles protect high-altitude areas. With this three-layered fire network, there is not a single gap from 3,000 to 20,000 meters. This is not the result of a single day's work; it must be due to his constant concern for the safety of the rear while in Moscow that he was able to devise such a comprehensive strategy. Even more remarkably, Feng had already received news of the impending conflict at Dongshan Island while still in the Soviet Union and wanted to test this new method in actual combat with the Second Artillery Corps. He said, "The unparalleled hero is on the other side," his sharp words aimed directly at the stubborn enemy. How fortunate I am! Thinking back to that skinny, dark-skinned boy from the foot of the Taihang Mountains, he has now become a pillar of the nation. Tonight, I should drink half a glass of vodka to celebrate, but my leg ailment prevents me from seeing him. It's a pity, yet also a source of joy, and enough is enough.