The attacking Mongolian army was crowded by the river, and when they were carrying their equipment down to the moat, the Jin army in Kaifeng City fired cannon stones at the Mongolian army.

At this time, the attacking Mongolian army looked up and saw the artillery stones, but no one ran away. Instead, he continued to push the equipment down to the ice of the moat.

Although it was the Han army that attacked, they were influenced by the Mongolian army and had a strong spirit. Coupled with the strict military discipline, they knew that artillery and rocks were about to hit, but they still moved forward step by step.

Suddenly, the Mongolian troops huddled together felt an earth-shaking force coming, and a huge explosion exploded directly above their heads.

A siege tower that had just gone downhill and was about to go up to the ice was overturned by the explosion. The tall tower fell towards the ice. The Mongolian troops on the ice were so frightened that they scattered like ants.

"Boom, boom, boom" explosions sounded one after another, and the Mongolian military equipment was blown up and down. The soldiers who fell on the ground could only feel the mud and ice crackling on their bodies like rain.

The Mongols who were attacking were struck by a thunderous thunder, causing chaos all over the ground. The orderly team fell into chaos instantly.

"It's a thunder that shakes the sky! It's a thunder that shakes the sky!"

Although this was not the first time for the Mongolian army to see thunder, the officers and soldiers were still stunned by the scene in front of them, and many of them were so frightened that they screamed.

"Here we go again! Go forward!" Someone in the team yelled.

The Mongolian troops, who were just waking up from a dream, were horrified to see hundreds of black spots rising from behind the city wall, and they immediately ran forward in a swarm.

As soon as they ran down the moat, there was another earth-shattering explosion behind them. The brave Mongolian soldiers looked back while running, and saw explosions one after another behind them. Under the explosion of white light, black smoke billowed, and countless equipment and soldiers were exploded. overturned.

Under the banner of the Mongolian flag, Wokuotai's face turned purple and red. He watched as thunderbolts fell from the sky one after another and smashed into the Mongolian army formation, exploding into pieces.

It took the Mongolian army a month to manufacture the equipment, but before it even reached the bottom of the city, it was blown to pieces, and the soldiers were also blown to pieces.

"Damn, it's Zhentian Lei!" Subotai yelled, "I knew that guy Zhao Tai must have transported firearms to Kaifeng!"

Wo Kuotai said with a dark face, "This Zhao Tai is really vicious!"

Before the attack, Wo Kuotai received news that there might be thunder in the city.

However, the Mongolian army did not find Tiantian Lei in their previous attacks, which made the Mongolian army relax a little.

Also, if there is a thunderbolt in the city, why don't we attack?

Obviously, the Mongolian army cannot give up the attack just because there is a thunderbolt in the city. Moreover, the thunderbolt is a new thing and there is currently no means of defense and restraint. The Mongolian army can only pretend that it does not exist and attack the city step by step.

Now the Mongolian army suffered a loss. Although it was the Kaifeng city defenders who bombed the Mongolian army, the Mongolian high-level officials unanimously blamed Zhao Tai.

At this time, the artillery group on the back of Kaifeng City continued to bombard the Mongolian army outside the city, causing the Mongolian army attacking the city to fall into chaos.

Those Mongolian troops pushing large equipment abandoned their equipment and continued to charge forward for fear of being bombarded.

Because the bombardment of the artillery group is not only affected by the range, but also has a blind spot for attack. As long as the Mongolian infantry rushes into the blind spot, they will not be attacked.

A large number of Mongolian troops moved forward. They ran across the moat and arrived in front of the city wall. However, although the Mongolian soldiers rushed to the bottom of the city, their siege equipment failed to keep up, so they could only look at the city and sigh.

"Marshal, this sky-shaking thunder is really a divine weapon! With such a sharp weapon, what's the point of having the Mongols overthrow the country?" Jin General Cui Li's face was full of excitement.

Originally facing the siege of the city by the Mongolian army, the Jin troops in the city were somewhat frightened and lacked confidence in holding on, but now after seeing the thunderous thunder, everyone was confident.

However, Wanyan Heda just nodded and ordered: "There are not many sky-shaking thunders, we must save, and all the artillery groups are ordered to use stone bullets instead!"

Gunpowder was expensive and difficult to produce. Although Zhao Tai tried his best to produce it, the gunpowder he obtained was very limited.

Therefore, although Zhao Tai wanted to send more to Kaifeng so that he could use the help of the Kaifeng defenders to inflict heavy damage on the Mongolian army, but due to the impact of production, he did not send many thunderbolts to the Kaifeng defenders.

After Kaifeng obtained the Thunder Thunder, Emperor Wanyan Shouxu of the Jin Kingdom ordered it to be imitated.

The Jin Kingdom obtained samples, and the conditions for imitation were much better than those of the Mongols. However, they encountered the same problem as the Mongols and were unable to carry out standardized production, so the thunderbolts they created were low in power and unstable.

Now they are using the finished products sent by Zhao Tai.

Now that Kaifeng is under siege, the Jin Kingdom can no longer obtain Sky Thunder from Zhao Tai. The number of Sky Thunders in the city is only one less than the one used, so it is natural to use them sparingly.

At this time, the Mongolian army's equipment was blown up and abandoned. The Mongolian army infantry rushed to the city. However, due to lack of equipment, they were unable to climb the city wall and could only be beaten passively under the city.

Heda decided to stop using the Sky Thunder and replace it with stone bombardment, which would not affect the occupation. The Mongolian army under the city was suppressed by the arrow rain from the city head, and they had no equipment to climb. Let alone break the city, they could not even climb the city wall. easy.

At this time, under the banner of the Mongolian army outside the city, the Mongolian generals looked at the situation below the city and knew that the attack that had been prepared for many days had failed. They would definitely not be able to enter Kaifeng today.

Subotai said in a deep voice: "There are thunderbolts in the city, and the siege equipment moves slowly, making it difficult to get close to it. Judging from the current situation, Kaifeng is probably difficult to defeat. What should we do?"

Many of the Mongolian generals couldn't help but feel a little depressed. Yang Weizhong observed the battlefield and said: "Great Khan, your guarding army has replaced stone bullets. This means that they must not have many thunders!"

Seeing this, Wokuotai cheered up and said, "Yes, one of the thunderbolts in the city is missing, and I have ordered the Firearms Institute to build our Mongolian thunderbolts as soon as possible!"

…

Under the city of Kaifeng, the Mongolian army began to attack the city. The Mongolian and Jin armies fought fiercely, but at this time, Shandong was very calm.

After Kublai Khan arrived in Jinan, he seemed to be afraid that Zhao Tai would break out and be poisoned by Zhao Tai, so he stayed in the city and reinforced the city's defenses without leaving the city.

Zhao Tai and Wuxian gathered more than 30,000 troops and stationed troops in the north of the Yellow River. They planned to cross the river and enter the boundary of Henan, but in fact they did not move their troops and quietly built piers and platforms along the river.

In Jinan, in the camp where Kublai Khan was staying, an officer was reporting to Kublai Khan, "My lord, Zhao Tai and Wuxian have been stationed in Shanzhou for more than a month, and they have been stationary!"

Kublai Khan frowned when he heard this and paced back and forth in the hall, feeling a little confused in his heart, "The main force of the Mongolian army besieged Kaifeng, but Zhao Tai did not move. This is a bit unreasonable! This king slaughtered his Suzhou, since he didn't take advantage of it With our main Mongolian force in Henan, come and attack me?"
Chapter completed!