After that, the smoke could no longer be treated. Every time the Mongolian army took a breath, their noses, mouths and respiratory tracts were burning and painful as if they were poured into pepper water! The eyes were so choked that they could not open at all, and a series of coughs almost made them cough out their lungs! After that, all the Mongolian army gave up the smoke-filled carriages, coughed all the way, rolling and crawling towards the upwind.

At this time, looking down from the Thunder Fortress, a thick smoke rolled towards the fortress from the northwest.

Then the smoke passed by the fortress wall under the west wind, and swept over one or two hundred meters outside the city wall of the northeast corner of the fortress, and rolled toward the Mongolian army in the distance! Originally, the Mongolian army planned to make a wonderful cooperation, while setting smoke in the north, the artillery positions in the south were ready.

Then when the thick smoke covered the entire fortress and made it difficult for the artillery troops above to see, the Mongolian artillery team in the distance would use nearly a thousand artillery to launch a bombardment towards the fortress wall.

They would transport the artillery to one thousand meters away, and these two miles away were the limit range of the Mongolian artillery.

After that, they would use thousands of cannons to bombard the fortress walls without hesitation.

At that time, the cement-built city walls and the artillery on them will definitely be beaten by the Mongolian army.

After so many years of hard development, the Mongolian army's artillery has made progress in steel modulation and precision casting technology, and they have also increased the caliber of the artillery madly.

This led to the Mongolian army artillery from the original one mile to the point where it could fire shells to about one thousand meters.

In addition, iron ore is everywhere on the Mongolian Plateau, and the craftsmen who were plundered by Temujin were even more like mountains and seas, which made the number of artillery in the Mongolian army so much that even they themselves felt cruel.

So this time the siege brought the distinctive style of Temujin and the Mongolian army.

After that, their artillery will use the usual cavalry assault method to break into their range and then quickly open fire.

However, they no longer used bows and arrows, but a large number of iron cannons! At the same time, Temujin knew clearly that the range of his cannons was much worse than that of Song army cannons.

Although he worked hard to develop a cast flowering bullet, stuffed gunpowder into it, strengthening the power of the shell.

But now he doesn't solve the artillery on the fortress, but his artillery is simply impossible to get close to the range.

That's why he used the trick of blocking smoke again... But this cooperation, which should have been extremely exquisite, was immediately interrupted by someone after the action began! The smoke-releasing train was fumbling with red phosphorus bombs and could not get close to the other person's city walls at all.

This made the artillerymen who were preparing to charge on the south side of the city wall feel full of energy, but they did not dare to take a step forward.

Seeing the smoke floating in the distance, but passing by the fortress, Temujin was about to burst into anger! When he sent generals to the north of the fortress to inquire about the situation... the process was quite short, because they had to reach the north bank of the fortress before sending the information back, and they had to cross the Lightning River twice.

After that, Temujin finally knew the reason for the failure.

It turned out that the smoke from the fortress was hit by poisonous fog that made his smoke-discharge troops fail to move forward in one step! Temujin looked at the sky and saw that the sun was already west.

He had no choice but to order the entire army to rest and prepare for the night battle tonight.

The first test and smoke battle just now did not get any effect, which made Temujin feel frustrated.

He decided to use the darkness of the night to try to push his artillery to the range of the fire, and he fired a thousand cannons at once!... Although Temujin, the old wolf, suffered consecutive setbacks, it did not affect his confidence.

He could not have encountered many things like this in his life's battles.

Even when his military power was at its peak, he could not easily defeat the enemy in every battle during the Western Expedition.

However, the Mongols always had a way to find the enemy's weaknesses.

This Thunder Fortress is the best place Temujin used to observe the firepower and combat style of the Song army.

He can test all the enemy's weapons and equipment here.

Then when he found a solution, he had a way to deal with the Yanshan defense line, and the enemy would be over!... As night fell, the sky gradually darkened.

After the Mongolian soldiers finished their supper, Temujin asked them to extinguish all the bonfires.

Because in the direction of the fortress, if there is a bonfire as the background, it is easy to find the figures of Mongolian soldiers.

Then they wrapped felt and fur on the hooves of the war horses, and under the command of Temujin, they slowly touched the Thunder Fortress under the cover of darkness.

During this night battle, Temujin used far more people than the daytime.

Since there are still vague stars and moonlight in the sky, the smoke trucks that failed to set off smoke during the day were organized again and took advantage of the night to touch the fortress in the northwest direction.

When they arrived on the other side of the Lightning River, not far from the fortress.

The smoke released on the car will overlap with the dark night, making the fortress defensive troops completely obstructed.

At the same time, there are Mongolian infantry heavy armored troops on both sides of the fortress, carrying cloud ladders to climb up the city.

Behind the siege troops were covered by Mongolian muskets, marching under the city, preparing to shoot at the city.

The Mongolian Army's attack line, both sides of the east and west, is not only to support the shooting of frontal artillery, but also to restrain the defensive forces on the fortress.

These Mongolian troops used this method to test whether their musket cover could achieve the expected role in siege.

At the same time, they also hope that the east and west wings could break the city smoothly! As for the final result in this battle, it was nearly a thousand artillery pieces that drove towards the Thunder Fortress from the south.

Taking advantage of the night, they had already pushed a large area of ​​artillery to three miles away from the fortress... The corpses of Semi people were everywhere, and they were already the shooting range of the fortress' artillery.

Due to the cover of night, at a distance no one could see clearly, the Mongolian army's artillery had successfully pressed on the fortress's belly!... Then after a while, after the smoke gradually came up, these Mongolian army artillery would charge forward for another mile and place the fortress's city walls in their own shooting range.

The first round of the thousand artillery fired the gliding bullets aimed at the fortress wall.

When thousands of shells raged on the city walls, Temujin believed that the defensive weapons and soldiers on the fortress would definitely be killed in large quantities.

After they suppressed the firepower at the city wall, Temujin would send infantry forward, rush through the wire mesh and mine array, and use muskets to shoot at the city wall, forming a rain of airtight bullets.
Chapter completed!