Because he was worried about the safety of Datong and the disaster that Cao Yue might encounter, Cao Changjiao's department traveled very fast.

After they went to Shanhaiguan, they traveled day and night in the direction of Datong.

Because of the difficulty of the road, Cao Bianjiao's troops did not carry artillery when they entered the customs, but only brought weapons such as muskets, fire dragon cannons, bows and arrows. The area around Beijing is mountainous and undulating, but fortunately there are official roads in most places, and Cao Bianjiao's men and horses are not slow to move every day.

Cao Bianjiao is also a veteran of the battlefield, he knows that he can't be careless at any time, Jiannu are cavalry, and his mobility is very strong, and his whereabouts cannot be completely hidden, maybe he has already been discovered by Jiannu, so he sent a large number of scouts along the way to investigate the situation.

After traveling day and night for many days, it is finally not far from Datong, according to the guide's report, it is only one hundred and fifty miles away from Datong, and it can be reached in one and a half days and a maximum of two days.

Datong is not far away, and there is no news of the fall of Datong, let alone a large number of displaced people fleeing, Cao Bianjiao breathed a sigh of relief.

He did not rush forward either, and ordered the whole army to rest well, recover their strength, and organize their ranks before marching.

It's almost Datong, and he will encounter the army of Jiannu at any time, and Cao Bianjiao doesn't dare to be careless.

Just when Cao Bianjiao's whole team finished resting and continued to march in the direction of Datong, the scouts in front brought back a few mysterious figures.

When asked, it was the liaison sent by Cao Yue.

"What? Jiannu retreated, and the siege of Datong was lifted? After Cao Bianjiao listened to the report of the visitor, he couldn't help but be overjoyed.

However, he was still not completely sure, until the other party showed Cao Yue's handwritten letter and tokens, and then he doubted the letter, and a little believed that Jiannu retreated from the north after suffering a fiasco. He immediately ordered the entire army to stop advancing and fortify on the spot.

When Jiannu retreats north, it is not necessary to immediately retreat across the Great Wall line and retreat into the grassland, maybe they will attack everywhere, and even go to Beijing for a walk before going back, as they did last time. They were coming from the direction north of Beijing, and if Jiannu wanted to invade Beijing, they would probably encounter it on the way.

Although Jiannu suffered a crushing defeat under Datong City, Allah did not suffer any losses.

This is an elite force with very strong field combat capabilities, and no one dares to underestimate it, and Cao Bianjiao does not dare to act carelessly.

Soon, the second wave of messengers sent by Cao Yue also arrived in Cao Bianjiao's army, and people reported that when Jiannu retreated, he let the Han army and the Korean army behind the palace, and Allah set up an ambush along the way. Cao Yue believed that Jiannu's initiative to retreat must contain a conspiracy, and Cao Bianjiao should be cautious, maybe Jiannu would advance by retreating and seeking a greater goal.

After receiving several transmissions from Cao Yue, Cao Bianjiao immediately decided to stop rescuing Datong and prepare to retreat to Beijing to prevent Jiannu from attacking the Ming Dynasty's Jingshi. However, just when Cao Bianjiao's troops ordered his men and horses to prepare to retreat and return to Beijing, a report from the scouts came that Jiannu's brigade had been found ahead and was coming quickly to the east.

"Jiannu's main force is really ready to attack Beijing," Cao Bianjiao's heart suddenly lifted, and he immediately ordered the whole army to occupy favorable terrain and prepare for battle.

Before receiving the news of the encounter, Cao Bianjiao had already chosen a hillside with a very favorable terrain to defend and set up camp. This place, facing the direction of the official road to Beijing is a gentle slope, behind which is a cliff with a large drop, and not far ahead, there is a pass, the width is only about two or three hundred steps. If you hold this pass, you will almost be blocking the official road, and if you want to go to Beijing, unless you take a long detour from elsewhere or defeat other people, it will be impossible to go to Beijing from this road.

Cao Bianjiao's headquarters had a fully manned musket battalion, plus his own guards, all equipped with muskets, and the whole army probably had more than 8,000 muskets. The army carried a large amount of ammunition, and each musketeer could fire at least twenty rounds. There were also quite a few dragon cannons, at least more than 20,000 of them, but unfortunately, there were no artillery cannons with them.

Cao Bianjiao was a very loyal and patriotic general, and when he encountered Jiannu in front of him, he did not think of retreating, but decided to stop Jiannu in this place and prevent Jiannu from going to Beijing.

The musket battalion immediately took up positions and defended from a favorable position, with archers on either flank, pikemen and cavalry on the left and right flanks of archers.

This method of warfare is a natural thought of by generals who have seen the power of muskets, the musketeers are the most lethal and must be placed in the front, the archers play the role of guarding the musketeers, and at the same time can kill and injure the enemies who rush forward within a certain range, and the musketeers can make up for their positions if the gunpowder runs out and retreats. The cavalry and pikemen on both sides were for the musketeers and archers.

If the attacking enemy does not retreat under the help of muskets, the cavalry can also take the opportunity to pursue them.

There is a position to defend, or a dangerous terrain can be used, such a formation can basically withstand the enemy's attack for a long time.

Cao Yue defeated Guo Jiannu with a similar tactic, and Cao Bianjiao also used this formation to repel Guo Jiannu's attack, and took advantage of the fact that Jiannu was defeated by a large number of casualties, and took the opportunity to chase and kill, and won the victory.

Cao Bianjiao's men and horses are well-trained, and his military quality is far from being comparable to that of ordinary Ming officers and soldiers.

In just half an hour, all the horses lined up according to Cao Bianjiao's order, preparing to meet Jiannu's attack.

Dolgon set up an ambush but did not play a role, Cao Yue did not send men and horses to chase after him, fight a counterattack, the idea of turning defeat into victory was shattered, Dolgon was not willing to return to the grassland like this, and left to attack a few more places, burn and loot, so that the vast number of Qing soldiers would achieve psychological balance. Therefore, after he evacuated Datong, he did not retreat beyond the Great Wall to the grassland, but attacked in the direction of Beijing.

Cao Bianjiao's men and horses are not far from Datong. According to the analysis of the situation of the scout detectives, Cao Bianjiao's department only had 30,000 to 40,000 people, and they came from a long distance, so their physical strength must have been affected, and they did not carry artillery. Dolgon believed that the Qing army's ability to fight in the field was invincible in the world, so he immediately decided to use his remaining strength to eat Cao Bianjiao's troops.

As long as Cao Bianjiao's men and horses are eliminated, then the defeat will not be miserable.

Dolgon expected that Cao Yue would not dare to lead his army out of the city to pursue, and he might not be able to detect the movements of Cao Bianjiao's troops. He led the army to attack Cao Bianjiao's department and wiped out Cao Bianjiao's men and horses, and Cao Yue did not necessarily dare to rescue. Even if Cao Yue had the courage to rescue, it might not be too late. He can also cloth pockets again, set up ambushes along the way, beat Cao Yue a little, and save some face.

Hauge's defeat in the Battle of Datong was not the worst, at least it was much better than Dord. In order to show that his ability is superior to Dorgon and even Dorgon, he asked himself to lead the army, intending to clear his shame with one or several victories, and cover Dorgon and the Dorgon brothers in the limelight. After encountering Cao Bianjiao's troops, Haoge also personally led the army to take the lead in the attack.