Above the city tower, three alarm bells rang, and the boulders thrown by the Qing army's artillery trucks flew one after another, bombarding the outer wall one after another.

Wang Jinchao saw the gap between the reloading of the prisoners, and immediately replaced the infantry archers on the arrow tower, and the firearms battalion climbed the wall to counterattack, and the replaced soldiers will enter the urn city in order to standby.

Before the war, Chongzhen and Wang Jinchao had carried out countless offensive and defensive calculations, and formulated a relatively complete set of plans to deal with them according to the range of artillery trucks and artillery used by the Qing army.

The center of Datong City has been emptied, except for the city defenders standing against the wall on all sides, the rest of the people have all moved to the west of the city. The purpose of this move was to free up nearly half of the city's dwellings as a "hit zone" for long-range enemy attacks.

The eastern plain where the Qing army was currently located, because of its smooth road, the Jianyu could easily unfold the siege equipment. But there was no high slope, and the military platform originally set up outside the city was bulldozed by the Ming army, so it was impossible to come down and gain insight into the movement in the city.

Before the Qing army crossed the imperial river, in the face of the towering city walls, thick wall tiles and the "depth" prepared by Chongzhen in advance, the Qing army, which had lost its visual advantage, would only rely on long-range artillery fire to achieve very limited results.

The dog was dressed lightly, carrying two small bright yellow flags behind him, and the moment he heard the alarm bell, he spread his feet and ran along the road, and the wind ran towards the city.

On the road between the city wall and the camp, Chongzhen set up a "flying foot" herald at a distance of 200 paces, and the heralds passed the battle situation and orders back and forth in the form of running relays. As the flying foot closest to the battlefield on the east side, the dog felt that he was carrying a thousand catties of burden, and seeing that he was getting closer and closer to the next herald position, he anxiously waved his arms and shouted: "Jianyu smashes the cannon!" Capture and smash the cannon! ”

The next flying foot squatted on the side of the road, pricked up his ears far away, and after making sure that he had heard correctly, he set off to run to the next place before the dog could run to the next place.

The dog panted heavily, intending to squat on the side of the road like the man, but as soon as his buttocks were sticky to the ground, he suddenly remembered that the herald had said that the herald should try to find cover and dodge, so he simply moved to the side of the courtyard wall and waited.

Chongzhen was sitting in the camp, staring at the map and thinking silently, first vaguely heard the bell coming from behind him, and in a moment the flying foot of the kung fu herald arrived with the news of the Jianyu smashing the cannon.

There is no need to give his own order, Wang Jinchao must have begun to organize a firearms battalion to counterattack according to the preset. Chongzhen thought for a while and said calmly: "Tell Wang Jinchao that you must keep an eye on the Jianyu equipment, first the artillery, and then the artillery truck." ”

"No!"

Ordering the soldiers to leave, Chongzhen couldn't hold it back, pacing back and forth in the camp tent, unable to calm down and think.

This emotion is difficult to describe, neither timidity nor tension, the intuitive feeling is that the limbs are slightly sore, and breathing is no longer easy.

Although he had made sufficient preparations in advance, it was inevitable that he would be upset when the war began, Chongzhen couldn't help but sigh in his heart.

In the past, when the armament was reorganized, 18 artillery pieces were available, of which 3 were small Franc machines and 15 were Huzun guns, and after cleaning and simple maintenance, all of them were installed in firearms battalions for use on the battlefield on the eastern front.

"Quick! Cannons! "Wang Jinchao climbed the city wall first and commanded the gunners of the firearms battalion. The weight of the Huzun cannon is relatively light, about thirty-six pounds, one person can easily hold it, and even if it is a small Franc machine, it still weighs 100 pounds, and many people must work together.

Wang Jinchao looked out of the city while urging loudly, and when he saw that the last Franc machine had been moved, he immediately shouted: "Fill the medicine!" ”

The Tiger Zun cannon and the Franc mechanism are different, and the gunner's operation techniques are therefore different, the Tiger Zun cannon is the front load, and the Franc machine is the rear load. Only one gunner is required to operate each Tiger Cannon, and the charge is aimed and ignited in one go. Due to its rear-loading characteristics, the Franc machine is divided into a mother gun and a sub-gun, which is much more complex and requires the cooperation of three gunners.

The gunners fixed the two Franc machines in the center of the city wall with matching wooden frames, and the Tiger Zun guns were deployed in turn on both sides.

Seeing that a wave of cannon cart projections hit the city wall, Kadu immediately ordered the cannon to advance another thirty steps.

"Hedu Belle, please stay away from here and be careful of the artillery of the Ming army." And Goshha persuaded him.

After listening to this, He Du nodded in approval, although he looked down on the Han people, but the artillery invented by the Han people was really powerful, and the ancestors had learned from the past, so they should be cautious. He immediately took Goshha back to the open space three hundred paces away and watched from afar.

Wu Weihua returned to the camp, took Wu Zhenchaoha in the Eight Banners Han Army, pushed eight special "red-coated cannons" of the Qing army to the front of the battle, and stopped at a position of two hundred steps under the signal of Hedu.

The key to the ability of artillery to eliminate catapults like "artillery carts" is range.

The time-consuming and labor-intensive artillery truck required more than a dozen men to operate, and the projection range was only 150 paces, while the small Franc cannon alone could easily reach a range of about 200 paces.

Even if the range of the Huzun cannon was not enough to bombard the Qing army's position, Wang Jinchao still ordered the charge to open fire, and in the first battle, it was necessary to make a move.

With an order, the artillery on the city tower roared in unison, and green smoke rose repeatedly.

"Boom."

"Boom."

"Boom."

Too late to look at the other side, Wang Jinchao covered his helmet and shouted: "Get down, all lie down." ”

More than a dozen boulders swarmed in, this time the cannon was closer, corresponding to the higher the boulders would fly, the walls "buzzed" and trembled, and the defenders on the dusty walls could not open their eyes.

A maverick boulder drew a high parabola, crossed the arrow tower of the urn city, crossed the city tower, and fell straight into the city.

The dog was rushing to the city wall with the order that had been sent back, when suddenly things changed in front of him, as if it were dark. I couldn't help but look up, only to see a boulder hanging overhead, blocking all light.

The dog was at a loss, so he had to throw himself forward and fall to the ground, and in a hurry, he had to close his eyes and grit his teeth and scold: "Your mother! ”

As a joke, the boulder grazed the top and hit a house behind him, "banging" countless wood and stone residues.

"Lao Tzu's life is really big..... "The dog was frightened, and he only felt a hot pain in his chest and arms, and the pain reminded him of his duty.

Gritting his teeth, he got up and continued to run forward.

"Blown up!"

"General, it's blown up!"

Wang Jinchao got up from the ground and looked in the direction of the cry. The outermost Huzun cannon bloomed in the center of the barrel, and it rolled over in the corner of the wall, and there were many dead and wounded nearby, wailing incessantly.

"You keep wiping the tube, charge!" Wang Jinchao ordered the rest of the people as he walked to the position of the rifled gun.

The gunner in charge of the cannon was the closest, and he could not die anymore, his hands were blown away and he did not know where to go, and his face was covered with iron thorns and lead. Wang Jinchao stepped forward with a painful face, pulled the iron thorns out of the gunner's face, and smoothed his eyes with his hands.

"Raise the flag and call for someone to carry the wounded down." Wang Jinchao called out to the heralds on the wall.

......

He Du didn't care about the jokes of the minions around him, covered his ears with his hands, and said: "The red-clothed cannon is good for everything, but the cannon is too loud, and it is the same as thunder." ”

The henchman Goshha comprehended, raised his hand to signal to Wu Weihua in front of him, and opened fire.

"Bang la", the fuse of the red-coated cannon was ignited, and the gunners retreated one after another, "booming" eight loud sounds, like thunder in the flat ground.