Grandpa, I've got it done.

Zhou Liejin looked at Wu Zu, who was sitting on the sofa, enjoying his hawthorn strips, and couldn't help but sigh.

"Grandma, why are you so honest and simple-minded!"

"Whether they believe it or not doesn't matter. The tank technology is there for all to see. When the people from the Army see it with their own eyes, they will naturally understand what's going on. The Type 80 tank will have to be stopped sooner or later."

Wu Zu stretched out his little hand, wiped the white sugar stuck to the corner of his mouth, and wore a confident smile.

"Grandpa Zhou, since I have the ability, why shouldn't I agree? Besides, I was planning to develop this technology anyway, so this is a perfect opportunity."

"Huh?" Zhou Liejin was slightly taken aback, surprise in his eyes. "You mean... you've already mastered the technology of composite armor?"

Wu Zu stuffed another hawthorn strip into his mouth, mumbled a response, and nodded vigorously at the same time.

"Yes, of course, otherwise why would I agree to them, Grandpa Zhou? I'm not stupid."

Seeing Wu Zu's confident demeanor, Zhou Liejin finally felt relieved.

"Alright, since you know what you're doing, you can stay in Yanjing for now. I'll go to the arsenal and make arrangements for you. Whatever materials or tools you need, just tell your grandfather!"

"Okay, thank you, Grandpa Zhou!"

Wu Zu's voice was clear, loud, and full of vitality.

"Hey, you little rascal... you're just like your grandfather, both so strong-willed. No wonder they're grandfather and grandson!"

That afternoon, Zhou Liejin found an independent laboratory for Wu Zu at the Yanjing Arsenal, as requested by Wu Zu.

Not only that, he also meticulously arranged all the materials Wu Zu needed.

In the same building, staff from several other laboratories, upon hearing that an eight-year-old child was researching composite armor, couldn't contain their curiosity and rushed over to watch.

Inside the laboratory, Wu Zu methodically prepared all the materials needed to make the composite armor, and then began to concentrate on making it.

It's important to know that the armor of the Type 99A main battle tank uses advanced ceramic composite armor.

This armor uses alloy steel as the outer layer, cleverly filled with ceramic spheres in the middle to form a layered composite armor system. Combined with external modular additional explosive reactive armor, it can achieve the maximum protective effect.

When an incoming fin-stabilized anti-tank armor-piercing projectile is detected, the explosive reactive armor will detonate instantly to change the trajectory of the incoming projectile and greatly reduce its destructive power.

Even after the explosive reactive armor takes effect, the internal ceramic composite armor still possesses extremely strong defensive capabilities.

Basically, its protection against long-rod fin-stabilized armor-piercing projectiles is close to that of 1000 mm of homogeneous steel armor.

It was precisely because of its outstanding performance that the Type 99A main battle tank became one of the most advanced main battle tanks in the world at that time.

At this moment, Wu Zu is making the key part that is filled with ceramic spheres, using alumina and silicon carbide as the base materials.

Soon, various materials in the laboratory began to undergo complex chemical reactions, but Wu Zu remained remarkably calm, carrying out each step of the operation without haste.

His movements were fluid and graceful, as if he had practiced them countless times, with every detail perfectly executed.

His every move left the technicians outside the laboratory speechless.

"My goodness, this kid is amazing! He managed to handle such a complex material reaction all by himself?"

"That's amazing! Watching him operate is a visual treat. His skills are even better than our professor's!"

"No wonder there's so much talk outside, saying this kid is extraordinary, able to build a tank even more powerful than the Type 80 tank. He really does have real skills!"

"It's hard to say exactly how skilled he is, but what's certain is that he has an incredibly good grasp of the chemical reactions of various materials, just like a veteran worker who has worked on an assembly line for many years."

"..."

At this moment, Wu Zu was already immersed in the process of making the composite armor, and the exclamations from the outside world seemed to have no effect on him at all.

His story spread like wildfire throughout the Yanjing Arsenal.

Almost everyone who heard about it would sneak over during their free time to observe his experiments, and after watching, everyone couldn't help but exclaim in admiration:

"This kid is absolutely awesome!"

Time flew by, and two days later, Wu Zu finally finished processing the last piece of alloy steel plate.

Following the manufacturing requirements of the composite armor, he carefully inserted the meticulously crafted ceramic spheres one by one into the alloy armor plates, and finally performed delicate welding.

Finally, Wu Zu successfully created a composite armor shield with an area of ​​about one square meter and a shield shape.

The young technicians from the arsenal immediately surrounded him.

"Grandpa, what exactly are you doing?"

"Yeah, weren't they saying they were going to make tank armor? Is this tiny piece really tank armor?"

"Your armor plates look way too thin. They don't seem to offer much protection. Can they really stop armor-piercing rounds?"

"..."

Faced with a barrage of questions from the crowd, Wu Zu simply smiled calmly and patiently explained:

"320 millimeters of thickness is sufficient. If the armor were too thick, it would add a lot of weight, which would affect the tank's movement speed!"

The group looked at each other, and although they understood that there was some truth to what he said, in their long-held belief, wasn't the thicker the armor of a tank, the better?

Then, Wu Zu pushed the cart and walked briskly to another office.

"Grandpa, I've got it done!"

Wu Zu's voice carried a hint of excitement.

Wu Shuanzhu, who was engrossed in playing chess in his office, was startled by the sound and quickly got up to open the door.

"So fast? Wasn't it supposed to take a week? How come it only took two days?"

"Perhaps I underestimated my abilities from the start!"

Upon hearing this, the old man burst into hearty laughter.

"You arrogant brat, you truly are my grandson! Alright, now that it's all settled, I'll call them right now and let them see what we're capable of!"

As he spoke, he strode to the table, picked up the phone, and quickly dialed a number.

"Old Zhou, send someone over right away! My grandson has successfully made the composite armor!"

……

Inside the Minister's office of the Yanjing Military Equipment Department.

Zhou Liejin was holding the phone when he heard the news and was completely stunned.

He glanced subconsciously at the calendar on the table, which was in a mess and even torn like a dog had chewed on it, and couldn't help but ask into the phone.

"That can't be right, wasn't it supposed to take a week? How come it's finished in just two days?"

Wu Shuanzhu's proud voice soon came through the phone.

"My grandson is no ordinary person. He himself said he underestimated his abilities. This kind of simple skill is more than two days' work for him. You'd better bring your men over quickly!"