Boom Boom Boom Boom ......

There was a loud bang that made the unexpected families suddenly lie down to more than half, and the few who were still standing were all shocked by their faces like gold paper.

Lu Bu, Zhang Yan and Chen Gong shrank back relatively closely, and they all blocked their ears with their hands, shouting something. Looking at the expression, I was very excited, probably satisfied with the power of the artillery, but the other party couldn't hear what they said to each other.

I saw that in the big black iron pipe erected on the city tower, a tongue of fire erupted at the same time, and pieces of black solid iron balls were launched (the lethality of scattered bullets at close range was greater), and smashed into the dense cavalry formation under the city like a meteor.

At the same time, the iron pipe rebounded, and the impact came to a halt on the sack of earth prepared in the rear, and the soldiers again filled the iron pipe with gunpowder and iron balls. It turned out that the iron cannon was equipped with rolling logs, so that after the soldiers fired the artillery, they did not have to pull back the barrel themselves, the barrel would automatically return to its position, and after loading the ammunition, it would be pushed out.

After the artillery, huge clay pots were thrown out of the sky above the city wall. Then the clay pot fell into the cavalry group, shattered, exploded.

At first, the Xianbei people outside the city thought it was artillery again and were frightened. However, the clay pot has limited lethality, except that the black liquid splatters far away. They didn't know what it was, so they weren't afraid.

There was a long interval between artillery firings. After a short panic, the Xianbei people outside the city finally stabilized and carried the sparse ladder again, set up on the moat, and prepared to force the crossing. On the front, Budugen's own cavalry began to pursue the retreating Breaker Army, and the drawbridge was narrow. The Breakers were only half withdrawn. But the cavalry did not get the advantage, and the dense spear formation made them suffer, and of course, there were also dead and wounded on the side of the broken army.

At this time, the families on the castle tower had not yet recovered from the turmoil, and when they saw that the other party was beginning to attack the city, the arrows flew wildly, and they all shrank into the castle tower behind them, and looked out through the guò hole.

Lu Chen helped his father into the sturdy cement city tower. And then. Dragging the wooden horn, he began to understand: "The weapon that made a loud noise just now is called artillery, and it has a range of 500 paces. Fires a projectile with the burning force of gunpowder, which fires a single Dead Heart projectile. Shotshots can also be fired. Single shells have a long range. Killing. However, the killing range is limited, the accuracy of the scattered projectile is low, and the firing range is short. But the coverage area is large. Artillery technology is still under development, and it is used to destroy the enemy at a slightly slower speed, but it is effective to break the enemy's formation and offensive. You've probably seen it. ”

Everyone was shocked, and they didn't know if they had heard Lu Chen's explanation.

At this time, the city's captives were about to retreat, and the Xianbei light cavalry also chased after them. It seems that he wants to chase the captives across the drawbridge and kill into the city.

At the same time, two hot air balloons with long ropes rose to a height of dozens of feet and floated outside the city in the wind.

"Ladies and gentlemen, look at the object in the sky, it is called a hot air balloon, which burns coal to heat the air, so that the density of the inside of the balloon is lower than that of the outside, so that the load can be lifted into the air." Lu Chen knew that except for Zhuge Xiaoliang, it was estimated that few people could understand this principle, but he still said to himself, "Soldiers can sit on the hot air balloon, and it is a basic function to use it for reconnaissance." Secondly, when defending the city, you can float out of the city and attack the enemy on the ground from above. And the enemy's bow and arrows can't shoot at all, unless there is a strong crossbow, however, the Xianbei people do not have a strong crossbow. ”

"So, how do they attack the enemy on the ground?" Sima Yi slightly captured a little bit of Lu Chen's tone, which was pretending to be forced, so he felt that someone needed to cooperate with him at this time.

Lu Chen was really overjoyed, glanced at Sima Yi encouragingly, and said, "Good question!" Look, under the hot air balloon are bombs and grenades. In fact, the two are similar, only the difference is size. Drop from above, explode below, and inflict massive damage on enemies. It's coming, everyone, pay attention. ”

I saw that the soldier on the hot air balloon lifted the package below, took out the bomb, lit it, and threw it down. Because it has been calculated and tested for a long time, the hot air balloon just floats above the suspension bridge, and if you throw it here, you don't need to aim at it.

Boom Boom

The cavalry and war horses below were suddenly torn apart, and within a dozen paces, none of them were spared, and they were all blown into pulp.

Lu Chen nodded with satisfaction.

The families were so shocked that they couldn't close their mouths, this is the legendary thunder and lightning thing? When I saw it today, it really lived up to its name! They didn't know that the gunpowder process and formula of Yanmen had been improved many times, and the current bomb power was far greater than before.

Sima Yi, who cooperated with Lu Chen, also widened his eyes, and then glanced at Lu Chen beside him with admiration. He had specially learned about Lu Chen, so he naturally knew that these things were all invented by Lu Chen.

There were not many soldiers on the hot air balloon, but there were a lot of bombs, and they were thrown to the ground one by one. Occasionally, when there was a target that was not directly below, they would pull a grenade and throw it at it, one of which was not very powerful, and a few more. In front of the suspension bridge, it suddenly turned into a scorched earth, where are the Xianbei people and horses who have never seen bombs, where do they still have the courage to pursue? He had already begun to retreat, but he was blown up and disrupted his formation, trampling on each other, and suffering countless casualties.

The Breakers took the opportunity to retreat slowly, and finally entered the city gates, and the enemy did not chase them.

The trebuchet is faster than the artillery, and when the cannon is reloaded, it still fires fierce fire oil. Moreover, the firing range is all driven to the maximum, about 400 steps. After three rounds, the cannon was reloaded and fired again. Since the current artillery is only a solid bullet and has no blasting ability, it does not ignite the fierce fire oil.

The Xianbei cavalry below was already in chaos, and the damage of artillery and fierce fire oil canisters was not too large, but it was terrifying, and many people and horses were frightened. But under the command of Budugen, the siege was still underway, but the efficiency was slow, and now it was enough to put a few ladders on the moat.

"This kind of thing is very strange to you, but it is not new." Lu Chen continued to explain.

Gradually, some people began to listen to his explanation, and probably felt something from the chaotic formation of the Xianbei people, Lu Chen might really be able to win the war quickly as he said.

"I am Mr. Bangu, in his Hanshu. The book "Geographical Chronicles" records that Gaonu County has water that can be burned. Cao Nu district is in Tay Ha district, north of Hanoi, and the big thing here is that there is an overflow of black grease floating on the water, and this grease can be burned. With a bang, Lu Chen shook and continued, "This grease is called oil, and it comes from the ground like coal. Two months ago, I sent the people who had not moved to the north to collect some of the Shanwutu tribes and discovered oil fields, which were not small in terms of production. This grease is flammable, and the combustion efficiency is much higher than that of animal fat and vegetable fat, so, you know, the next thing is the art of fire attack. Of course, the Xianbei people outside the city don't know ......"

Lu Chen's voice echoed in the city tower, and everyone froze, it was actually a fire attack? However, the rocket can't shoot that far, right?

At this moment, the sky, which had just darkened, suddenly brightened, and pieces of huge red-hot coals flew out of the city. Yes, the charcoal stove that burned behind the trebuchet at the beginning, not for heating, but in preparation for the fire attack.

Bang bang bang.

The huge, reddish charcoal smashed on the ground, splashing countless cremations, like fireworks.

Snort.

Outside the city, behind the Xianbei people, a raging fire rose into the sky. Several rounds of fierce fire oil ejections have already stained the ground at a distance of about 400 meters, and when the burning coal arrives, it is the heavenly thunder that triggers the earth's fire. The most terrifying thing is that almost all the cavalry and war horses in the rear were contaminated with fierce fire oil, and now, almost all of them are burning. Burning horses galloped, charging the cavalry below the city, and the chaos intensified. They could not retreat, and their back path was blocked by the sea of fire.

The firelight reflected the sky red, and the clouds were beautifully rendered, but the ground was a hell for the cavalry. (To be continued......)