Looking at the clouds of white smoke rising from the groves and hills, Bald Polo's face suddenly changed, and his heart suddenly chuckled, and he had an indescribable sense of foreboding.

Although he could not see what the muffled noises were that Vulture Polo could see, he suspected that the woods and hills were filled with Ming artillery, which he thought was the only one that could make such a terrifying dull sound.

When he was fighting with Emperor Yongle, he had seen the power of the iron cannon of the Shenji Battalion, which not only caused heavy casualties to the Mongolian cavalry charging in a dense formation, but also disrupted the formation of the Mongolian cavalry, which made the Mongolian cavalry fall into a panic, and then gave the Ming army an opportunity to take advantage of.

However, in the next moment, Bald Polo denied his speculation again, it was precisely because he had seen the iron cannon of the Shenji Battalion, so he knew that the iron cannon was not only bulky and heavy, but also had a limited range of no more than one mile, and whether it was a grove or a hill that was nearly three miles away from the advancing Mongol cavalry, how could the iron cannon hit so far?

Moreover, what puzzled Bald Polo was that he didn't know where Li Yuntian had found so many iron cannons at one time, and he felt that there were at least dozens of them from the continuous sound of cannons.

Due to the strict control of firearms by the Ming army, except for the troops of Shanxi Xingdu Division and Gongwei Jinggi, which often broke out with Tatars, other Ming troops, including Liaodong Dusi, were not equipped with iron cannons, and Li Yuntian did not use iron cannons in the two battles of Qingfeng Valley and Yinzhou City, and those iron cannons could not have appeared out of thin air for no reason.

Not to mention that the iron cannon weighs more than 1,000 catties and is not easy to transport, if you want to use it, you need the imperial permission of Emperor Xuande, Emperor Xuande was defeated in the Yuma River last year, if there is such a powerful firearm, it will definitely stay, how can it be allocated to Li Yuntian to use?

Boom, boom, boom......

Just when Vulture Polo was secretly guessing whether it was the iron cannon of the Ming army that made a muffled sound, a series of explosions suddenly occurred in the forward formation of the Mongolian cavalry on the left and right who were charging at high speed, and a large number of Mongolian cavalry immediately turned on their backs and screamed again and again.

The cavalry that followed behind was caught off guard, and they all pulled the reins of their horses to avoid the cavalry and war horses that fell to the ground, so that the forward troops that had originally maintained a neat formation immediately became chaotic, and the speed of the charge stagnated.

Seeing this, Bald Polo was taken aback, and hurriedly looked at the place where the explosion occurred, and his face immediately turned pale, how familiar he was with this scene, and the iron cannon of the Shenji Battalion was how it killed the charging Mongol cavalry.

However, compared with the iron cannons of the Shenji Battalion, the Ming artillery that attacked the Mongolian cavalry this time seemed to be more powerful, and he could clearly see from the city gate tower that the cavalry around the explosion point five or six meters were instantly overturned to the ground.

"What's going on?" Darru looked at the Mongol cavalry forwards in disorganized formation with a look of astonishment, wondering why the explosion occurred.

"It's the artillery of the Ming army!" Bald Polo looked at the groves and hills emitting white smoke with a grim face, and said in a gloomy voice, "It seems that we underestimated this Zhenwu Marquis, and these cannons are his killer weapon." ”

"Ridiculous, does he want to use those guns to win this battle?" Darru was slightly stunned at first, and then said with a sneer, "By the time they are ready for the next attack, our cavalry has already rushed in front of the Ming army, and then we will see what their artillery is of use." ”

"I hope so!" The brows of Vulture Polo furrowed tightly, and he replied absentmindedly, as far as he knew, the biggest disadvantage of artillery was that it took a lot of time to install ammunition, and the Mongol cavalry could take advantage of this opportunity to rush into the camp of the Ming army.

As soon as Polo's words fell, a dull sound of cannons came from the groves and hills again, which made his expression change, and he hurriedly looked up, only to see dozens of small black dots flying out from the groves and hills, and the forward of the charging Mongolian cavalry fell, and a series of explosions occurred in the middle of the Mongolian cavalry.

This explosion made the formation of the Mongol cavalry forward, which was already a little messy, even more chaotic, and the cavalry of the forward force was frightened by the two rounds of artillery fire, and subconsciously slowed down the speed of their march in panic, which significantly slowed down the charge of the Mongol cavalry.

"How can it be so fast?" Darru looked at the forward cavalry in disarray, his eyes showing disbelief.

How did he know that the Ming army's Franc cannon was a reloader smoothbore gun, and the ammunition was loaded in the sub-gun, and the sub-gun was installed into the launch port of the mother gun in turn to fire, without having to be temporarily loaded, which greatly accelerated the firing speed.

"Chuan Ben Shuai's order, send the cavalry to capture that grove and hill, and take these two places down no matter what!" If the Ming artillery is allowed to fire, then the formation of the Mongol cavalry will be disrupted, and the psychological damage will be heavy, once the morale falls, the consequences are unimaginable, so he must take the artillery position of the Ming army.

Moreover, if the Mongol army can be equipped with such sharp firearms, it will not only be invincible on the battlefield, but also a sharp weapon for siege, which will be of great benefit to the Mongol army to conquer the well-defended cities of the Ming army.

"Listen, there is a lot of reward for those who capture the artillery of the Ming army!" Darru suddenly came back to his senses when he heard this, and he also realized the power of the Fran cannons, so he gave an order to the generals beside him to seize a batch of Fran cannons.

With the orders of the Balpolo and Darru, 3,000 Tatar cavalry and 3,000 Wa Ra cavalry pounced on the grove and hill where the Ming artillery was located.

There were about 30,000 Mongolian cavalry in the Tiger Skin Camp Post City, and there were more than 26,000 cavalry in the Tiger Skin Camp Post City because Mudu and Ancha took 4,000 cavalry to set up an ambush to block the Ming army's rout.

In order to defeat the Ming army in one fell swoop, 20,000 cavalry were sent to Polo and Darru in the first wave of the offensive, and the remaining 6,000 cavalry were arrayed under the northern city wall of the Tiger Skin Camp Post City.

Originally, the two did not plan to use the 6,000 cavalry outside the northern city, in their opinion, the 20,000 Mongolian cavalry was enough to disperse the Ming army's military formation, and then the Mongolian infantry would cooperate with the cavalry to carry out a bloody slaughter of the Ming army.

But who would have thought that the Ming army would have artillery to assist in the battle, which brought heavy casualties to the Mongol cavalry, so Balpolo and Darru had to use the 6,000 cavalry to seize the artillery positions of the Ming army.

Although the two rounds of artillery bombardment caused hundreds of casualties to the Mongolian cavalry forward troops, and the charging formation became chaotic and scattered, it was less than a mile away from the Ming army, so the Mongolian cavalry drew their bows and arrows to shoot at the Ming army, and archery on horseback was a skill that the Mongolian cavalry had to learn from an early age.

Almost at the same time, the cavalry on both wings of the Ming army also shot their bows and arrows at the Mongolian cavalry that rushed over, and a large dense rain of arrows shot out from the two wings of the Ming army, like locusts covering the sky and the sun to meet the Mongolian cavalry.

With the fall of this rain of arrows, nearly a thousand cavalry cavalry of the forward unit of the Mongolian cavalry fell from their horses screaming, and the Mongolian cavalry behind had long been accustomed to this situation, and still charged forward bravely, as long as they avoided this rain of arrows, they could meet the Ming cavalry in short combat.

Boom, boom, boom......

Unfortunately, when the rain of arrows passed, dozens of shells falling from the sky exploded in the middle of the Mongolian cavalry forward troops, causing the surrounding cavalry to subconsciously dodge to both sides, and the formation of the Mongolian cavalry forward troops became more chaotic.

"Rocket!" Seeing that the Mongolian cavalry was getting closer and closer, Li Yuntian shouted in a deep voice with a stern expression.

The guards who had previously released five red signals took out a small bamboo tube again, and after tearing off the pull ring under the small bamboo tube, the five yellow signal flares rose into the air, making sharp chirps along the way.

With the yellow flare lifted into the air, more than 100 rockets were fired from the cavalry units on both flanks of the Ming army, but the target of these arrows was not the Mongolian cavalry rushing over, but the grass in front of the Mongolian cavalry.

The general on the north gate of the Tiger Skin Camp witnessed this scene, and his brows suddenly furrowed slightly, not knowing the intention of the Ming army to release those rockets.

Just when he was puzzled, the rockets fell on the grass, and then suddenly, a wall of fire 15 or 6 meters wide rose on the grass, resting between the Ming cavalry and the Mongolian cavalry.

In the face of the sudden appearance of the wall of fire, the Mongolian horses that rushed to the front stopped in horror, which caused dozens of unsuspecting Mongolian cavalry to be thrown out of their horses.

Due to the suddenness of the incident and the proximity of the distance, the Mongol cavalry behind did not have time to pull the reins to stop the horses and had nowhere to hide, so they collided with the horses parked in front of the fire wall one after another, causing chaos at the scene.

More and more Mongol cavalry stopped in front of the wall of fire, and the horses collided with each other, looking very crowded, and the cavalrymen looked at the wall of fire with a stunned expression, for this was the first time they had encountered such a strange situation on the field.

"Damn!" The Vulture Polo now understood the intention of the Ming army, it turned out that he wanted to use the wall of fire to stop the offensive of the Mongolian cavalry, it seems that the Ming army must have sprinkled something on the burning place of the wall of fire last night, otherwise there would not be such a fierce fire.

Just as Vulture Polo guessed, Li Yuntian asked Xiao Wujun to quietly put a lot of fire oil wrapped in pig urine bubbles in those grass last night, and in order to make the fire fierce, he also added some accelerants developed by the Academy of Sciences of the Lecture and Martial Arts Hall to the fire oil, so it had the effect of a wall of fire.

Taking advantage of the panic of the Mongolian cavalry, the cavalry on both wings of the Ming army methodically fired arrows at the Mongolian cavalry behind the wall of fire.

At the same time, the two artillery battalions also lost no time in launching an artillery attack on the central part of the Mongol cavalry, and the cavalry that gathered together in dense groups encountered an artillery bombardment, which was simply a disaster, and many cavalry and horses were hit by shells, shattered, and flesh and blood flew everywhere, and the cavalry and horses that were blown away were in an endless stream, and the scene was very terrifying.

The Mongolian cavalry was obviously stunned by the rain of arrows and artillery bombardment of the Ming army, and did not react for a while, and subconsciously scattered in all directions to dodge, scurrying around like flies that did not have them, and became a mess, and more people fell under the rain of arrows and shelling.

In particular, the shells that fell in the middle of the Mongolian cavalry not only set off a bloody storm but also had a huge deterrent effect, making the Mongolian cavalry fearful and their morale quickly dropped.