Three days later, in the evening, Li Yuntian led an army of 60,000 consisting of 20,000 Xiaowu troops, 20,000 Jurchen soldiers, and 20,000 Liaodong Ming troops, and quietly left Kaiyuan City under the cover of night, and secretly rushed to Qingfeng Valley to set up an ambush.

In order not to alarm the Mongol army in Yinzhou City, Li Yuntian deliberately took a long way to bypass Yinzhou City, according to the distance calculation, they would arrive in Qingfeng Valley in five days, and at that time, the Mongolian soldiers should still be on the way to Qingfeng Valley, and should arrive on the sixth or seventh day.

Therefore, Li Yuntian let the army only bring eight days of military rations, which means that he is ready to fight against the Northern Yuan reinforcements in Qingfeng Valley, and if he does not succeed, he will become benevolent, and then only after winning the battle can the Ming army take the rations from the Northern Yuan reinforcements, otherwise even if he does not die, he will face the fate of being captured, and the soldiers will not be able to escape without military rations.

Gu Liyu followed Li Yuntian to Qingfeng Valley, and the highest military attache left behind in Kaiyuan City became Pei Jun, anxiously waiting for the battle report from Qingfeng Valley, he had already prepared the logistics baggage, as long as the good news came, he would organize people to transport food to Li Yuntian, and at the same time receive prisoners.

After a rapid march day and night, Li Yuntian rushed to Qingfeng Valley at noon on the fifth day as planned, and while sending scouts to inquire about the news of the Northern Yuan reinforcements, he let the army rest on the spot and began to prepare for the ambush.

As Li Yuntian expected, the Northern Yuan reinforcements were still two days away from Qingfeng Valley at this time, and because they carried a batch of baggage for the Mongolian army in Yinzhou City, coupled with the fact that the servant army was afraid of battle, the marching speed of the Northern Yuan reinforcements was greatly affected.

Many of the generals and soldiers of the servant army were veterans who had been in the army for many years, and they knew that Adai Khan asked them to reinforce Yinzhou City this time in order to let them serve as cannon fodder to attack the original city, so their morale was low, and their marching speed was naturally not much faster.

On the afternoon of the day he arrived in Qingfeng Valley, Li Yuntian led Gu Liyu and the generals of the Ming army and the leaders of the Jurchen tribes to the top of the high mountain on the east side of Qingfeng Valley, and condescendingly observed the terrain of Qingfeng Valley.

Qingfeng Valley is a long oblique passage in the north-south direction, sandwiched between two spreading and undulating mountains, four or five miles long, although the slopes on both sides of the valley are not steep rocky cliffs but have a considerable slope, the Mongol soldiers want to break through the siege can only use foot soldiers to attack the mountains on both sides, and the Ming army is high and the defenders will cause them heavy casualties.

In Li Yuntian's view, the key to the ambush in Qingfeng Valley is to hold the two valley entrances in and out of Qingfeng Valley in the north and south, as long as these two valley entrances are blocked, then the situation of closing the door and beating the dog can be formed, making the Mongolian army that enters the ambush circle become a turtle in the urn.

Therefore, Li Yuntian handed over the important task of encircling the southern valley mouth of Qingfeng Valley to Gu Liyu, and asked Gu Liyu to lead 5,000 Xiaowu troops and 5,000 Mongolian soldiers to be responsible for cutting off the back route of the Northern Yuan reinforcements.

Qingfeng Valley Beigukou was guarded by Li Yuntian himself, and in addition to the 6,000 Xiaowu troops of the musket battalion and the spear battalion, half of the remaining 4,000 people were the Ming army of Liaodong, and the other half were soldiers of the Mongolian tribes.

The remaining 40,000 horses were placed by Li Yuntian on the mountains on both sides of Qingfeng Valley, responsible for preventing the Northern Yuan reinforcements in the valley from breaking through.

Two days later, in the afternoon, the Northern Yuan reinforcements arrived at Qingfeng Valley, and at the forefront were 5,000 Mongolian cavalry, who entered the mouth of the valley at the southern end of Qingfeng Valley, talking and laughing with each other, and did not know anything about the Ming army ambushed on the hills on both sides.

Five thousand Mongol foot soldiers followed behind the Mongol cavalry, and because of the slow pace of the 20,000 servants, they dragged their feet behind, taking prisoners and transporting baggage, and the soldiers were listless, and the atmosphere was unusually dull.

In order to speed up the march of the servant army, some Mongolian cavalry waved the horsewhip in their hands and loudly urged the servant army to go quickly next to the queue, and the soldiers of the servant army would fall heavily if they neglected the Mongolian cavalry.

The Mongol commander who commanded this Northern Yuan reinforcement force was named Chahe, from the Korqin tribe of Adai Khan, a relative of Adai Khan, surrounded by a group of Mongol generals, riding horses and following behind the Mongol cavalry.

Chahe was in a good mood, and along the way he talked and laughed loudly with the surrounding Mongolian generals, discussing how to separate the Ming army from the original city of Yinzhou with the Mansu and Mudugua in Yinzhou City, and it is rumored that the Ming army had transported a lot of materials from the Korean Kingdom to Kaiwon City, including many valuable goods such as gold, silver, jewelry, silk and satin seized from the Lianghuai Salt Road Ink Corruption Case.

Not only Ahe, but also the Mongolian generals in Haizhou City were convinced that there were a large number of Ming army baggage in Kaiyuan City, otherwise how could the Ming army in Kaiyuan City afford to pay the money paid to Mansu and Mudu to redeem the Ming prisoners of war? Many of the Mongol soldiers present at the time saw boxes of gold, silver, jewelry, and silk silk brought by the Ming army.

Therefore, the Mongolian generals of Haizhou City were vying to lead the army to reinforce Yinzhou City, and they all wanted to take advantage of this opportunity to make a big profit.

Cha He is not worried about the attack on Kaiyuan City, in his opinion, the success of the last sneak attack by Gu Liyu by Mansu and Mu Du is just careless, as long as the battle is not given a chance to the Ming army of Kaiyuan City this time, then Kaiyuan City is captured, and the only thing he cares about now is how to share the spoils with Mansu and Mudu.

Mansu is a native of Arutai and represents the interests of the Tatar Asuth tribe, and Mudu is the second son of King Anle of the Warattur tribe, representing the interests of the Waratul tribe, and the Korqin tribe from the Tatar tribe naturally represents the interests of the Korqin tribe.

Since the strength of the three parties is equal, no one can take too much advantage of it, so the distribution of the spoils requires the three parties to sit down and negotiate, and it will definitely take a lot of effort and time to achieve a result that is satisfactory to all three parties.

It is no wonder that the Ming army of Chahe despised Kaiyuan City, the Mongolian army won successive victories in the battles between Liaodong and the Ming army, and now even the northern expedition army of Emperor Xuande was almost killed by Arutai without leaving a piece of armor, and the Ming army in Liaodong was hiding in several cities and could not hold out.

As a result, arrogant feelings involuntarily bred among the Mongolian generals, so that the Mongolian generals did not take the Ming army seriously at all.

This made Chahe make a mistake that he regretted for a lifetime, because of his contempt for the Ming army and arrogance, he did not send a vanguard force to open the way ahead, and even ignored the danger of soldiers like Qingfeng Valley, and he never imagined that the Ming army cowering in a few cities would set up an ambush here.

In the col on the side of the valley mouth at the northern end of Qingfeng Valley, Li Yuntian sat on a stone under a tree and closed his eyes to recuperate, quietly waiting for the Northern Yuan reinforcements to enter the ambush circle of the Ming army.

The black pressure in the mountain col was full of soldiers who were waiting for the battle, holding the weapons in their hands tightly, and their expressions were strict, and the atmosphere at the scene was tense and depressing.

The soldiers knew the importance of this battle, so as soon as Li Yuntian gave an order, they would rush out and rush to the front of the valley to meet the enemy as fast as possible.

In order to avoid disturbing the Northern Yuan reinforcements, the Ming army's horses put a cover on their mouths to prevent the horses from neighing, which made the mountain col silent and terrifyingly quiet.

To be honest, Li Yuntian didn't expect that the Northern Yuan reinforcements did not send a reconnaissance force to check the situation in Qingfeng Valley, after all, Liaodong is now a battlefield, and any unexpected situation can happen, so it seems that the leading generals of the Mongolian army are too arrogant.

"Xianggong, the Mongolian cavalry is already less than two hundred meters away from the valley mouth." While waiting, Lei Ting, who was dressed in military uniform, walked forward quickly, leaned over and said in Li Yuntian's ear.

Hearing this, Li Yuntian opened his eyes, got up and stretched lazily and slowly raised his right hand, and the Ming soldiers who were ambushed in the mountain col were all refreshed when they saw this, and put on a posture of attack.

Boom, boom......

When the Mongolian cavalry forward troops in Qingfeng Valley marched to about 100 meters away from the valley mouth, some black and slimy ball-shaped objects suddenly fell on the hills on both sides, and before they came to their senses, a series of explosions occurred after those black balls landed, and hundreds of cavalry and horses fell into a pool of blood in an instant.

Due to the huge power of the explosion, some cavalry and horses were even blown up high, and the stumps and broken arms were scattered all over the ground, and the screams were incessant, and the scene was extremely terrifying.

The horses of the Mongol cavalry following behind were frightened by different paths, causing the formation of the Mongol cavalry to become confused.

These black balls are modified mines, which are a welcome gift from Li Yuntian to the Northern Yuan reinforcements, if he knew that the commander of the Northern Yuan reinforcements would not send someone to investigate the situation in Qingfeng Valley, Li Yuntian would have people set up a minefield in the valley.

For Li Yuntian, his biggest killer weapon is the firearms he brought from the Beijing division this time, in addition to arquebuses, there are also mines and explosives, which belong to the top secret of the Ming army in Kaiyuan City, and few people know about it.

After hearing the dull explosion coming from the valley, the corners of Li Yuntian's mouth couldn't help but show a hint of a smile, and then he waved his raised right hand forward vigorously.

Seeing this situation, the Ming army ambushed in the mountain col immediately rushed to the mouth of Qingfeng Valley, and methodically lined up in a gentle open field in front of the valley mouth:

Five mixed formations of musketeers and pikemen fanned out the valley entrance, and the rest of the men and horses were divided into two phalanxes to stand by in the rear, one composed of the Liaodong Ming army and the other by the Jurchen soldiers.

Just as the Ming army was in front of the valley, a series of explosions were heard in the valley again, and a Mongolian cavalry unit tried to rush out of the valley, but was blown up by the black balls falling from the mountains on both sides of the valley, killing and wounding heavily, and the wolf retreated in a miserable manner.

Li Yuntian stood on a hill outside the valley mouth to watch the battle, looking expressionlessly at the Mongolian cavalry in the chaotic Qingfeng Valley in front of him, the expression on his face was much more relaxed than before.

What he was most worried about was that the Mongol cavalry rushed out of the valley when the musket battalion was not firmly established, so that the Ming army in front of the valley could not stop the charge of the Mongol cavalry.

Now that the musket battalion is in full swing, it is difficult for the Mongol cavalry to break through this defensive line composed of the sharpest firearms of the Ming Dynasty, which means that the ambush is half successful, and the rest is to annihilate the surrounded Northern Yuan reinforcements.