The Song and Jin wars were surging.

Two major events shook the two countries.

The first was the ancient capital of Chang'an, which was taken by the Song army.

At the height of the Tang Dynasty, Chang'an was the largest city in the world, and the size of the Daming Palace was four times the size of the Forbidden City in Beijing.

But unfortunately, when the dynasty fell, the more prosperous the city, the more suffered, just like Luoyang of the Han Dynasty, Chang'an was also repeatedly destroyed, all industries withered, almost destroyed, and now it has become a military town, not up to the level of the capital.

Even so, this was enough to boost the morale of the Song army and give it the capital to attack Kaifeng.

What's more, there is the second thing that happened immediately after that-

The gold lord Wan Yanxiang was assassinated and could not afford to be seriously injured, some said that it was an assassin of the Song Kingdom, and some said that it was a henchman of the old emperor.

Although the news is false and true, it is enough to shake morale.

In stark contrast to the great Song Dynasty's soaring advance, the 150,000 Jin army stormed Xiangyang for two months, with more than 10,000 casualties and low morale, but nothing was gained.

Imagine that Mongolia raised the strength of the whole country, and the last siege of Xiangyang took six years to force it to surrender, that was still the case of insufficient support from the Southern Song Dynasty, and now Gu Cheng is guarding it, if the Jin State really wants to capture it in just a few months, unless a miracle happens.

Gu Cheng estimated that the "miracle" was coming soon.

On this day, when the horn sounded again and the army from afar arrived, the defenders of the city were surprised to find that there were dozens of huge and strangely constructed trebuchets in the center of the Jin army.

"Is it finally starting? But it's not enough to see, unless it's a Xiangyang cannon, it's a little threatening!"

Gu Cheng appeared at the head of the wall for the first time, looking at these huge trebuchets, pushed by hundreds of golden troops, towards Xiangyang, with a calm expression.

In the future, the Mongol army could not capture Xiangyang for a long time, so it brought a kind of return cannon from the Arab region, using the potential energy of heavy objects to project stone projectiles through the principle of leverage, which was much stronger than the original pull of manpower.

According to historical records, the sound of the artillery fire shook the world, and all the attacks were destroyed, seven feet into the ground, and the faces of the generals in the city were colorless, and the reinforcements were all cut off, so the city surrendered.

Because of that war, later generations named it Xiangyang Cannon, which can be said to have been spread in the world by stepping on Xiangyang.

Gu Cheng, as a traverser, although he is not like other colleagues who study glass saddles, he is proficient in mathematics, physics and chemistry, and all of them are small experts in inventions, but he will still put forward opinions on military equipment.

"Forty to the southwest, ready!"

So at this moment, Gu Cheng waved his hand, and in Xiangyang City, trebuchets had already been prepared.

As soon as the order came, a hundred soldiers shouted and turned the wheels of the base, and rolled the stones weighing 100 catties, but very rounded, onto the holsters with rolling logs.

"Fat!"

With a wave of his hand, dozens of stone bullets roared up, slashed through the air in an arc, and smashed downward.

Bang! Bang! Bang!

In the earth-shattering sound, the accuracy of the boulder was terrifyingly high, and it directly smashed the Jin Army trebuchet in the front row.

The surrounding Jin soldiers didn't even say a word, and they were all minced meat.

"Victory!

Gu Cheng didn't even go down the city wall, showing absolute self-confidence, and the defenders cheered and thundered, and their morale was greatly boosted.

There is no way not to be confident, Gu Chengming is a skilled craftsman to transform, and the range of the trebuchet has reached two hundred and fifty steps, that is, four hundred meters.

The road outside Xiangyang City is already narrow, not conducive to walking, under the absolute range advantage, there are standard cobblestones, Gu Cheng's eyes are like torches, through simple geometry, this kind of crosshair, even if it can't point where to hit, it is enough to make the Jin army cry and howl.

But the determination of the Jin army this time was also extraordinary, one trebuchet was destroyed, another was launched, and at the same time, the army charged, surging wildly.

Suddenly, the sky was like rain, some of them were thrown out of the city, and many of them were smashed inside and outside the city walls.

Gu Chengyi was bold, still staying on the city tower, watching the boulder smash against the wall, although the momentum was loud, the damage was not great.

Because he arranged a tida on the city wall, a kind of soft curtain made of coarse hemp rope tightly woven into a fine soft curtain, the surface is coated with a mud layer to prevent fire, and flying stones are smashed on it to cushion, which can effectively protect the wall battlements.

As for smashing into the city, there is nothing that can be done, so it is necessary to attack against attack, taking advantage of the advantage of range to greatly suppress the enemy's stone-throwing.

"Come on, let me see your real killer features!"

When the army approached, Gu Chengxin pushed away the rain of arrows, not caring about these petty fights, but Wan Yanxiang's real killer feature.

Sure enough, seeing that another long-term attack was fruitless, the Jin army once again piled up new siege equipment.

This time, Gu Cheng's face changed.

Because it is a black iron pipe, with a hideous atmosphere, it makes people think of the artillery of later generations at a glance!

Of course, if you look closely, whether it is the length of the gun body or the iron casting, it is extremely rough and simple.

"Is this flint cannon an improvement invented by Wei Sheng? Master Song Zhi's long technique to control Song, this must be Feng Sheng's idea!"

Many people think that gunpowder was officially used in warfare during the Ming and Qing dynasties, but this is not the case.

The use of firearms in the Song Dynasty was already developed, and even 50 years later, China's first artillery unit shone brightly during the Mongol expedition to the west, and the foreign devils complained bitterly.

How did the artillery of that unit come from? Of course, it was made by the Han!

Everything depends on whether the ruler attaches importance to it or not, and whether he is willing to spend a lot of money on research and manufacturing.

In all fairness, both the Mongols and the Jin Kingdom were very enlightened in this regard, so now there is this kind of artillery that even the Great Song Dynasty does not have!

said that it was too late and that it was fast, the size of the flint cannon was much smaller than that of the trebuchet, and the Jin army deliberately avoided the range, and the Xiangyang side could not clear it in advance, and in an instant, the fuse was ignited, and Gu Cheng dodged away.

Boom, boom, boom!

In the terrifying loud noise, the wall of Xiangyang suddenly exploded, the air flow surged, the rocks flew and collapsed, and the defenders at the head of the Great Song City were unstable and fell downward.

When the smoke and dust disperse, the originally impregnable city wall has become potholes, according to this, it only takes a few rounds of continuous fire to blast the city wall into the gap, and drive straight in!

"Divine punishment!

The Jin army shouted loudly, invincible, fearless of death under the ravages of boulders and arrows, frantically erected cloud ladders, and attacked the wall.

The Song army trembled, almost thinking that it was really a punishment from heaven, and the mandate of heaven wanted Song to perish.

Don't underestimate this psychological impact, in the confrontation dominated by cold weapons, once the morale collapses, the end will inevitably be defeated!

However, in the next moment, the cheers in Xiangyang sounded, and it was Gu Cheng who appeared on the city wall again.

He snapped his fingers, and the six-vein divine sword killed in the air, and the hideous faces were only exposed on the wall, and then they turned into horror and distorted, and disappeared.

"Prince!

Throughout the ages, I am afraid that there has been no such fierce leader, Gu Cheng's body rose up to swallow mountains and rivers, just like a banner that will never fall.

But if the emperor drives the expedition in person, whether he can escape or not is where the morale of the army is, and now His Royal Highness the Crown Prince personally goes into battle to kill the enemy, how can they still be cowardly?

"The killer weapon is a firearm? No, it's not enough!"

Nine Yang and Nine Yin, True Qi Protects the Body, Gu Cheng guards one side, and is at ease.

He looked at the golden soldiers in the distance, desperately loading the flint cannon with shells, but there were still continuous explosions, and the second round of artillery was far away.

Obviously, the practicality of this flint cannon is still not enough, if you want to take Xiangyang, unless Gu Cheng is killed by a cannon, it is absolutely impossible!

"But the slinging artillery, open the way first, this time it must be real!"

"'Fire', scout for me, you don't have to!"

Gu Cheng gave an order, the dragon pattern in his palm shone up, and the "fire" appeared, flying outward.

Although the small flame has no attack ability after leaving the body, it still comes and goes without a trace on the battlefield, and it is the best scout.

Sure enough, after a while, the "fire" floated back, giving an unexpected and reasonable answer -

"Your Highness, the earth's leylines have changed, and Zhang Jiao's remnant soul wants to perform the Taiping Magic, causing the earth dragon to rise and fall, and the Xiangyang earthquake!"

......

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