A stone cannon hit the head of a Song soldier who had just fired an arrow.

There was a dull thud.

He was smashed beyond recognition, his nose bones were shattered, his eyeballs were exploded, and his facial bones were sunken. The huge force even pushed his body backwards and flew backwards, pushing three people behind him.

Finally, he fell on his comrades.

People around were splattered with blood.

Some people felt scared. Just this morning, they were chatting about their daily life together. Everyone remembered that this young man was the only child in the family.

People are dead now.

Someone quickly dragged him behind and shook him twice. His whole body only twitched slightly and then stopped moving.

No one has time to feel sad, and those who are ready immediately start moving forward.

"Attention everyone, the enemy has started to use stone cannons, please hold your shields!"

Zhang Bofen roared.

There are not many officers like him who are on the front line with ordinary soldiers. It is precisely because he is here that everyone's morale is high.

The soldiers behind held up their shields, forming a row of protective layers on the battlements.

Bang bang...

Another stone came.

The stones this time are different from the last time. Their individuals are smaller than the last time, but the number is obviously much larger.

It hit the shield with a banging sound.

The hands of some soldiers holding the shields were so strong that they hurt, and some even had their wrists broken.

"Stone cannon! Stone cannon!"

Zhang Bofen shouted loudly while walking quickly.

The Song army at the corner tower began to use stone cannons.

This kind of stone cannon is a small trebuchet, which is placed in the turret of the city wall.

Unlike the rocks fired by the Jin army, the Song army directly used explosive gunpowder.

Specifically, Tribulus Fireball.

What is Tribulus Fireball?

Tribulus (jili) is a spherical plant, but its surface is covered with thorns.

The Tribulus Fireball is a cannonball-like weapon made by the Song Army.

Inside are three six-headed iron blades, equipped with special gunpowder, and iron caltrops with reversed beard nails are placed around the body.

Thread a hemp rope through the middle of the fireball to form a sphere.

After igniting the fireball, use a trebuchet to launch it into the traffic artery where the enemy's cavalry must pass. The explosive force will emit iron caltrops to injure the enemy and their horses.

At this time, the Song army on the corner tower fired caltrops fireballs.

They drew parabolas in the air. After they fell, the fuses burned out, the black powder inside exploded, and the spikes burst out, shooting in all directions, penetrating the armor and killing the Jin army soldiers.

In an instant, five Jin Army soldiers fell to the ground around them.

Three died and two were seriously injured.

This thing is a barbed thunderbolt.

Speaking of thunder, the Song soldiers on the tower had already begun to throw it away.

Thunderbolt is a firearm of the late Northern Song Dynasty. You can understand it as the "hand grenade" of the Northern Song Dynasty.

It is divided into two types, the one with long lead and the one with short lead.

The long lead wire is thrown out with a trebuchet, just like the caltrop fireball that happened in the corner tower just now.

If the fuse is short, light it directly and throw it under the tower.

During the Northern Song Dynasty, the war was basically defensive, and wars continued from the founding of the country to the end of the country, so many things were incorporated into military equipment that were not available in previous generations.

I saw soldiers of the Song Army throwing thunderbolts down one after another. The explosions continued one after another. The fragments penetrated the armor and penetrated into the bodies of the Jin Army soldiers.

The Jin Army soldiers below fell to the ground in pieces.

This effect is much better than smashing rocks.

However, the number of Thunder Thunder is limited.

At this time, the Jin Army also began to replace the stones of the trebuchet with explosive iron artillery!

That's right, the Jin Army also has them.

The equipment of the Jin Army comes from two sources:

1. The Liao Kingdom was destroyed by them.

Liaodong has always been a place that produces iron ore. The Liao Kingdom was not a pure nomadic nation. It was a combination of nomadic people and Han people, and it was a semi-nomadic and semi-feudal empire.

There used to be a considerable number of Han craftsmen in the Liao Kingdom who were proficient in craftsmanship, but later they were all taken over by the Jin Kingdom.

2. Three important military towns in the northern part of the Song Dynasty.

In order to defend the Liao Kingdom, the Northern Song Dynasty set up a series of military defenses in Hedong and Hebei.

The three towns mainly refer to Taiyuan, Hejian and Zhongshan.

At the end of the first year of Jingkang, at this time, the Jin army captured three towns and obtained most of the Song army's firearms, which were then imitated and manufactured by craftsmen.

But they saw the Jin Army's iron artillery drawing arcs in the air and pressing towards the Song Army's city.

Bang bang bang...

After hitting the city head, it exploded, creating a terrifying force of destruction among the Song army crowd.

Screams came one after another. The soldiers of the Song Army who were originally forming a counterattack against the Jin Army on the ladder were injured and fell to the ground. There was a large panic.

The surrounding Song soldiers immediately stepped forward to fill the gaps in defense.

The Song army showed heroic and tenacious spirit.

After all, everyone has no way out. The Jin people have already reached their doorstep. If we take a step back, if the Jin people enter the city, they will definitely massacre the city and many people will die.

No one can guarantee whether those killed will have any family members.

At this time, it actually aroused everyone's passion.

Coupled with the emperor's various operations, the morale of the Song army was very high.

But there were more than twenty ladders, spread horizontally to a width of more than 100 meters. Countless Jin soldiers climbed up, and the city walls were covered with Jin soldiers.

The speed at which the Jin Army soldiers were wiped out could not keep up with the speed at which they could be replaced.

It seems that more and more Jin soldiers are trying to climb up, and the Jin's iron artillery continues to hit them.

Zhang Bofen shouted: "Bring up the fierce fire oil!"

But they saw soldiers behind them each holding a cabinet in their hands. The Song army in front quickly made room for them, while the infantrymen next to them held up shields to protect them.

Those cabinets are fierce fire oil cabinets, one of the firearms of the Northern Song Dynasty.

The Eastern Roman Empire was most proud of Greek fire in naval battles, which was the flames ejected from the bow to burn the enemy's ships.

This thing actually existed in the Song Dynasty, and it was more powerful than the one in the Eastern Roman Empire.

It is just a small cabinet that can be screwed up by one person, making it very convenient to carry.

And it was designed very scientifically, using the principle of air compression, which is the same principle as later fire-throwing devices.

I saw the fierce oil tank in the hands of the soldiers of the Song Army. There was a pump (original piston machine) placed horizontally on the tube, which was connected to the oil tank. About 3 kilograms of oil was injected each time.

The front of the pump is equipped with a "fire tower", which contains gunpowder.

The soldier used a red-hot torch to ignite the ignition powder in the fire tower, causing a high-temperature zone to form inside the fire tower. At the same time, through conduction, the fuel injection channel in front of the preheating cylinder formed a preheating zone.

Then pull the pump hard to compress the air into the oil tank, so that when the fierce oil spurts out through the fire tower, it will be ignited by the heat and spit out flames from the nozzle of the fire tower.

Immediately he transformed into a fire dragon!

A Jin Army soldier who had just climbed up was instantly swallowed up by the fire dragon and fell down with a scream.
Chapter completed!