Not to mention Yuan’s boys, Yuan’s boys, even Yuan’s boys, who have been climbing on the battlefield for a lifetime, have never seen so many stone throwing cars.

The boy Yuan swallowed and cursed: "Damn, this stone throwing car has formed a square formation? Is it that long range?"

A hint of fear appeared on Yeon Gaisuwen's face. The rock-throwing car array was so terrible. He hurriedly said: "How much is our rock-throwing car range?"

Yuan Nanjian said without hesitation: "Don't worry, my father, how far can this stone throwing car go? We have an advantage when standing at a high place. As long as they get closer, we will take the stone throwing car first. If they know that it is useless, the range is..."

He suddenly stopped talking, wherever he looked.

More than two hundred huge rocks rose into the sky and roared like meteors and hit Pyongyang City.

"careful!"

Yuan Gaisuwen's expression suddenly changed. He pressed Yuan Nanjian's head into the battlement, and he shrank his head tightly like a turtle.

There was a loud "bang".

The cannon stone did not hit them, but just hit the battlements near them. The broken soil splashed, and the entire city wall seemed to sway.

Then there were loud noises one after another, one after another, as if they were playing a drum.

Pyongyang City is a drum, and unbudgetable flying stones are a hammer.

They are lucky, but others don't have this kind of luck.

Some of the huge flying stones crossed the city wall and smashed the homestay outside the city, directly smashing the homestay; some directly hit the city tower, smashing one person into a meat pie, which is not the end. The ground of the city tower was too thick, and the cannon stones were subjected to anti-shock force and shattered, just like shells, small and sharp stones splashed out, causing secondary damage within the range. As long as it was not a vital point, it was not fatal, but the visual effect it caused was extremely terrifying.

More than two hundred flying stones directly shocked the high-spirited soldiers on the Pyongyang city tower.

Queen Jin Deman outside the city, and King Fuyuyi of Baekje couldn't help but breathe in a kind manner. The scene of two hundred cannons flying together made them unable to help but put themselves in their shoes, and a question emerged in their minds: If these two hundred stone throwers face their own capital, how many rounds can they last?

Jin Deman glanced at Fu Yu Yici beside him and said to himself: "It's better he's easy to bully!"

Coincidentally, Fuyu Yici also glanced at the Queen of Silla beside her and thought to herself: "Let's bully her!"

Yuan Gaisuwen raised his head and looked at him secretly. Seeing that Tang Jun was installing cannon stones, he breathed a sigh of relief.

Such a huge cannon stone must be unfast to load.

"Quick, fight back! Counterattack against their rock-dumping cart!"

Yoon Gaisuwen ordered loudly that Pyongyang City would not be able to withstand the two hundred stone throwing cars below. No matter how strong the city is, it cannot withstand such bombing.

With the order from Yoon Gassuwen, Goguryeo on the city tower also began to tinker with their stone throwing cart.

Their rock-throwing carts are not large, only more than twenty, but their appearance is almost the same as the rock-throwing carts used by Tang Jun.

"emission!"

Yuan Nanjian roared loudly, with a hint of fanaticism in his eyes.

Yuan Nan built his power in Goguryeo to be responsible for the defense of the four gates of Pyongyang City. He inspected these exquisitely structured stone throwing cars every day, fantasizing that one day he could command them to meet the enemy, but unexpectedly the opportunity would appear like this.

Amid the cheers of Goguryeo soldiers on the city tower, flying stones fell from the sky and smashed towards the Tang army.

Li Yuanai stood in front of the stone throwing cart, holding up his hands forty-five degrees, making a look of coming and smashing it at me. He looked at the cannon stones flying not far away, but kept muttering: "The stone throwing cart range is 130 steps, and the Pyongyang city tower is more than 4 meters high. According to the mechanics parabola law, then the Goguryeo stone throwing cart will not exceed 180 steps at most..."

Bang, bang, bang, bang!

Flying stones fell ten steps away from Li Yuanai, rolled or bounced twice, and lost strength.

It was not even hurt by Tang Jun at all.

Not to mention the soldiers on Pyongyang City, even the Tang army was stunned.

Fuyu Yici sighed: "The King of Shang is a true warrior!"

Li Shimin raised his eyebrows. With his understanding of his younger brother, he was 100% sure that he was 80% sure that he would not be able to hit the stone.

Jinderman looked straight and sighed secretly: "It was me who delayed Shengman's future and made her miss such a hero..."

Li Yuanai felt very good, and this was satisfying to pretend.

As Li Shimin thought, Li Yuanai knew the stone throwing cart on Pyongyang City very well.

A simple stone throwing cart can be made by everyone, but it is just a leverage principle.

However, in-depth research requires the physics of high sound such as horizontal axis, vertical axis, tip, force arm, resistance arm, etc.

The Chinese still have no orthodox records of physics, and the exquisiteness of the stone-throwing cart is entirely obtained by the experience of great ancestors.

How could Goguryeo steal the Chinese culture? He could not learn how to make a stone thrower.

Goguryeo's stone throwing machine was seized from the Sui army, and who made the stone throwing machine of the Sui army?

The Taifu Qing also commanded the Shaofu Supervisor, and took over the General of the Right Guard He Chou!

All the manuscripts of He Chou were in Li Yuan Ai's mind, so he knew every structure of the stone throwing car in Pyongyang City, and the range was needless to say.

After more than 30 years of development, the stone-throwing carts of the Tang Dynasty have been more sophisticated than the stone-throwing carts of the Sui Dynasty, with a longer range and greater power. Li Yuanai's own understanding of physical mechanics has been improved in detail.

The range and power are not comparable to those of the rock-throwing carts thirty years ago.

Even if the rock-throwing carts on Pyongyang City have a high advantage, they cannot make up for the gap in technological progress.

Of course, if the calculation is really wrong, Li Yuanai will still run away with her head. After all, pretending is too great to be a life...

"It's our turn!"

Li Yuanai waved his hand and pointed at the walls of Pyongyang City and said, "Let it..."

More than two hundred cannon rocks hit Pyongyang City like a carpet bombardment again.

With endless bombardment of cannon rocks, the trembling soldiers behind the battlements of Pyongyang City seemed to have experienced earthquakes after earthquake, and the city tower collapsed at any time.

The boy Yuan shouted: "Father, if you passively get beaten, your morale will be exhausted. Why not let the child take someone out and burn them all the fire."

The biggest disadvantage of a stone-throwing car is that it has a slow firing speed and a slow movement speed. Once it is entangled by soldiers, there is no possibility of escaping.

Yuan Gai Suwen also knew that this would not work. Looking at his beloved son, he also knew that in the current situation, only his own son would make a desperate attempt for him.

"Be careful, when you see something wrong, come back immediately!"

Yuan Gaisuwen grabbed Yuan's hand hard, reluctant to let go.
Chapter completed!