Cao Yue's judgment was basically accurate, and the Jiannu people who arrived close to Datong City were the Han army Zhenghuang Banner led by the great traitor and Huaishun King Geng Zhongming.

After Dolgon agreed to Duoduo's army to attack Datong, Geng Zhongming's more than 8,000 people joined Duoduo's army and served as the vanguard of Jiannu's southern expedition. Geng Zhongming was of course very reluctant to take on this job, but he did not dare to disobey Dorgon's orders, so he could only follow Duoduo on the expedition.

Dolgon is a prince, and Geng Zhongming is also a prince, but the status of Geng Zhongming and Dolgon's prince is completely different. Not only can they not be compared to Dolgon's status, but they are not as good as the county king of Duoduo, and even other Jurchen nobles can use them as slaves.

This is the sorrow of the subordinates, in the eyes of the Jiannu people, they will always be the second ministers, they are slaves, and their status cannot be higher than that of the Jurchens.

The Ming army that surrendered to Jiannu was actually tragic, they played the role of the vanguard of the battle in every battle, that is, as cannon fodder, and the Jiannu always consumed their strength first in the war, while the Jurchens could benefit from it. Geng Zhongming had more than 30,000 men at most, but now, there are only 15,000 people under his command, and the rest of the men and horses have really become cannon fodder. However, now Geng Zhongming has no way out, no matter how the upper echelons of Jiannu treat them, he can only go by desperately working for Jiannu.

Geng Zhongming and other subordinates knew that if they wanted to gain a higher status in the Great Qing Kingdom, they must continue to make military exploits in order to gain the appreciation of their masters. For this goal, they also worked hard to kill their compatriots, and never relented.

It can be said that the Ming army, which surrendered to Jiannu, was no less brutal than the Jurchens and Mongols.

In this battle of the surprise attack on Datong, Duoduo finally changed his mind after several sneak attacks by the Ming army, changed the surprise attack to a feint, and let Geng Zhongming lead more than 8,000 Han troops and 1,000 Mongols and 500 Jurchen elite cavalry to approach Datong, preventing the Ming army in Datong from going out of the city to pursue, or supporting other cities. Duoduo personally led a large army, together with the first to divide his troops, to attack other unprepared cities, and also planned to attack Beijing.

If the defenders of Beijing were not prepared, it would be impossible to take advantage of the situation, and even attack the city.

Since being attacked by the Ming army several times and suffering heavy losses, Duoduo has lost hope of breaking through Datong and defeating the Ming army led by Cao Yue. He could only retreat to the second, attack other cities, loot, and then give Daming a threat, and then retreat outside the pass.

If the Qing army can retreat and give the Ming great intimidation, it will also be a success.

Geng Zhongming had no complaints about the tasks assigned to him, as long as he was not allowed to lead the army to attack the city and behave under the city, there would be no loss. Whether it was Duoduo or Geng Zhongming, they all felt that the Ming army would only defend the fortified city and would not take the initiative to attack out of the city.

Geng Zhongming was ready to lead the army to Datong City, stay for half a day, and then slowly retreat, and come back the next day, when the Ming army was confused and did not dare to fight easily, he led the army to leave, followed Duoduo back to leave Guannei, and returned to Shengjing.

Neither Duoduo nor Geng Zhongming would believe that in this weather, in the face of tens of thousands of Qing troops approaching, there were still Ming generals who dared to lead their troops out of the city to meet them. But Geng Zhongming never thought that his opponent today was a person who played cards out of common sense.

"Report!" A horse quickly rushed in front of Geng Zhongming, pointed to the direction of Datong City in the distance, and gasped and reported: "Report to the prince, the Ming army actually went out of the city to meet the attack!"

Geng Zhongming, who was squinting his eyes and basking in the warm sun, suddenly widened his eyes and looked ahead in disbelief after hearing the sergeant's report. Sure enough, the originally high suspension bridge at the north gate of Datong has been lowered, and a neat line of Ming army sergeants are quickly leaving the city.

Geng Zhongming, who didn't expect such a situation, suddenly panicked, and immediately ordered his men and horses to prepare for the battle.

After a short period of panic, Geng Zhongming did not think of retreating or escaping, he was confident that in the field battle, the Ming army still could not defeat the Qing army, even if he was originally the Qing army that was surrendered by the Ming official army, it was also better than the Ming army in terms of combat effectiveness.

The most important point is morale. In the war between the Ming army and the Qing army, the victory rate of the Qing army was completely superior, and in the face of the attack of the Qing army, many Ming officers and soldiers were terrified and collapsed at the first touch. At least in the field, the Ming army had not defeated the Qing army.

In the last battle of Songshan, Cao Bianjiao and Cao Yue led the army to attack the Qing army's camp and almost ended the imperial tent of Huang Taiji, but all the Jiannu did not think that this was the Ming army's defeat of the Qing army in the field, it was just their carelessness that let the Ming army choose the opportunity.

Geng Zhongming was confident that he could defeat any Ming official army outside the city. Not to mention, the military quality of the men and horses led by Geng Zhongming is really not comparable to that of ordinary Ming officers and soldiers. Although it was a haste to meet the enemy, there was no major panic.

"Haha, Cao Yue is really looking for his own death, the great Datong City is not good to guard, and he wants to go out of the city to fight, see how this king defeats him today!" In an instant, Geng Zhongming's fighting spirit was high, and he seemed to see the scene where Cao Yue was defeated by him, the whole army was defeated, and the men and horses he led took advantage of the situation to attack Datong City, and finally captured Cao Yue. When he returned to Shengjing, he would be greeted by a generous reward from Dolgon, and his status would definitely be higher than that of the other surrendered Hanchens.

Geng Zhongming thinks that Cao Yue is too young after all, he likes to be reckless, and he likes to be willful, so today he will teach this little offspring a lesson.

Geng Zhongming completely forgot that when he traveled all the way, Duoduo was tossed by the team sent by Cao Yue, and even forgot that it was Cao Yue, the defender of Datong City, who led more than 1,000 people to break through Shengjing and destroy Shengjing City, and finally Huang Taiji was angry to death.

The Datong garrison now has 50,000 people, and the training is very strict, which Geng Zhongming does not know.

Cao Yue, who was still standing at the head of the city, holding a telescope to check the situation, couldn't help but be very excited when he saw that Jiannu had also set up a formation and was ready to fight. However, Jiannu's performance also made him vigilant, worried that Jiannu's main force was nearby.

At this time, there was a Malay newspaper that there were more than 10,000 Jiannu troops, which were rapidly marching in the direction of Baideng in the northeast, and the target was likely to be Beijing. After hearing the news, Cao Yue's initial worries were immediately dispelled, and he immediately ordered the first battalion led by Cao Jie and the men and horses led by Zhao Tai to set up a position outside the north gate, ready to meet the attack of Jiannu.

The first battalion was a standard firearms battalion, and all the officers and men of the battalion were armed with the latest production muskets, equipped with ample ammunition, and his own wooden-handled grenades, which could be used in close combat. Cao Yue was very confident in the combat effectiveness of the first battalion. As long as the muskets do not fail, the fully equipped first battalion is the first army in the world, and no army can match it. What's more, there is artillery at the head of the city to support it.

Cao Yue is now only afraid that Jiannu will not take the initiative to attack, the first battalion is advancing on foot, and if they are to approach Jiannu's camp on foot, it will be very troublesome, and maybe the camp will be chaotic. What he likes to see most is that Jiannu takes the initiative to attack, which will definitely replicate the results of the Battle of Songshan when he faced Hauge's troops, and deal a devastating blow to Jiannu.

Fortunately, Cao Yue's worries did not come true, seeing that the Ming army guarding Datong actually went out of the city to face the battle, Geng Zhongming immediately ordered his men and horses to spread out a formation and prepare to attack.

A big war is about to start under Datong City!