In the few days when the Jiannu artillery battalion arrived in Datong, they did not launch a large-scale siege of the city, at most they only sent a part of their men and horses, and put on a position as if they were going to attack the city on a large scale, but after attacking the city, they immediately retreated.

Soon, even the ordinary soldiers defending the city knew that Jiannu was only making a feint attack, with the purpose of creating panic among the Ming soldiers of the defending army and consuming the weapons and ammunition in the city. Because everyone thinks so, there isn't too much panic. The big victory a few days ago was too morale-boosting, and the current Datong army and people no longer take Jiannu seriously, and many people joke that they will destroy as many Jiannu as they come.

But Cao Yue is not too optimistic, he knows that the crisis is coming step by step.

There is no way to wipe out all the artillery battalions of Jiannu, at least with a few hundred special forces, they are not capable of destroying all the artillery battalions that are closely guarded by tens of thousands of Jiannu elites. In addition, the amount of gunpowder in the city could not be guaranteed, and muskets could not be mass-produced. Another problem that cannot be ignored is that the hundreds of thousands of rogues led by Liu Zongmin and Li Yan have gone and returned.

Even if Liu Zongmin and Li Yan did not unite with Jiannu, but sat on the mountain and watched the tiger fight, it would be a very big test for the Datong defenders.

The army of more than 100,000 Jiannu attacked the city with all its strength, and vowed not to give up until Datong was captured. Combined with the experience of Jiannu attacking Jinzhou and Songshan, Cao Yue can conclude that Jiannu also wants to besiege for a long time. The reinforcements are not to be expected, and they can only rely on the military spirit in Datong City to defend the city with all their might, and it is possible to achieve the final victory.

Cao Yue regretted that he still underestimated the coming of another war so soon and the intensity of the war, and he was not able to make more muskets and ammunition.

In any case, muskets, explosives, etc., in the face of bows and arrows, knives and guns and other cold weapons, the lethality occupies an absolute advantage. If there was a regiment or even a battalion under his command equipped with machine guns, automatic rifles, and other weapons commonly equipped by later armies, then he was fully confident that he would destroy tens of thousands or even hundreds of thousands of enemy troops armed with cold weapons at the head of Datong City.

It's a pity that all this can only be dreams and lust.

But now he had muskets in his hands, muskets that were not too powerful, as well as artillery, grenades, explosives, which gave him enough confidence.

Of course, what Cao Yue hopes most is that Jiannu can't bear the huge casualties and retreats, he doesn't want to fight with Jiannu to the end, he still wants to retain his strength. Now is not the time for the final showdown with Jiannu, and he has not yet developed more and more powerful firearms.

Jiannu's artillery battalion was originally expected to arrive at Datong City in three to four days, but it was delayed for many days due to the attack and harassment of the elite detachment sent by Cao Yue. Seven days had passed, and they were still at least a day or two away from Datong. The members of the special training team, after no way to infiltrate the Jiannu camp to cause sabotage, can only choose to attack on the way.

They planted mines, explosives, destroyed roads and bridges, and burned the convoy to the brink of the Duoduo. He didn't dare to throw down the artillery battalion and chase down the Ming army that was engaged in sabotage, so he could only march cautiously.

This situation somewhat relieved Cao Yue, but it was related to the future and lives of hundreds of thousands of soldiers and civilians in Datong, and he did not dare to be careless.

During this time, Wei Daben, the prefect of Datong, and his officials were very conscientious, in addition to pacifying the people, arranging for hundreds of thousands of villagers outside the city to enter the city and settle temporary residences, as well as preparing food and various materials, he also prepared a lot of strategic materials for Cao Yue, including more than 100,000 catties of saltpeter, and also responded to the call of Cao Yue and Sun Chuanting, temporarily recruited nearly 50,000 young and middle-aged people from the people, ready to pull to the city to act as a defender in a critical time. Wei Daben's conscientiousness made Cao Yue very satisfied, and he was glad that the partners around him were all good people, otherwise this day would have been even more difficult.

Six days after the red lady left Datong, she returned.

But she entered the city alone, and the two maids Xiaoyun and Ruyi who followed her disappeared.

The red lady herself is also embarrassed, as if she has experienced some hardships or fierce battles.

"Red Girl, what's going on?" Seeing the appearance of the red lady who was taken by the sergeant, Cao Yue was a little surprised and hurriedly inquired.

"On the way back to the city, I encountered the Jiannu patrol, there was a conflict, the two maids of the slave family in order to cover the slave family, the Jiannu patrol cavalry was lured away, and now life and death are unknown," the red lady probably told Cao Yue about the situation, it turned out that when they were preparing to sneak back to Datong City, they encountered the Jiannu patrol more than ten miles outside the city, and the conflict inevitably occurred, because of the huge disparity in power, and finally Xiaoyun and Ruyi led the Jiannu patrol away, and the red lady was able to get out.

When returning to the outside of Datong City, it was extremely difficult to enter the city, but fortunately I met a team of Ming patrol horses outside the south gate of Datong, and showed the handwritten letter given by Cao Yue to the leading officer before entering the city.

Seeing that the red lady had blood marks on her face and her expression seemed to be painful, Cao Yue asked with concern, "Are you also injured?" I'll ask the military medical officer to heal you!"

"A little injury, it doesn't matter!" The red lady twisted and refused, and immediately talked to Cao Yue about business: "General Cao, the slave family saw Li Yan and persuaded him in person. He promised that he would never unite with Jiannu to fight against the official army. The rebels and Jiannu have a common enmity, and he ...... in this life He is determined to eliminate Jiannu and restore peace to the people of the Han family, and the slave family believes that he will do what he says. He also knew that you deliberately let the rebels survive last time, and he would not take advantage of the fact that the official army and Jiannu were fighting to the death, take advantage of the fire to rob and capture Datong. ”

"That's good," looking at the red lady's expression, Cao Yue knew that there must be a lot of hidden secrets behind it, but he believed that since the red lady would say it with such certainty, then Li Yan would definitely not join forces with Jiannu and attack Datong together, maybe Li Yan's tens of thousands of horses could still pose a threat to Jiannu.

Li Yan told the slave family that he and Liu Zongmin were ordered by King Chuang to take the opportunity to capture Datong, and he didn't know how Liu Zongmin would act, but he believed that Liu Zongmin would not help the slave to abuse and help Jiannu attack the official army. The uprising of the rebel army is all for the people of the world, Jiannu is the life-and-death enmity of our Han family, and there is no possibility of resolution, so you don't have to worry about Liu Zongmin and General Liu's army colluding with Jiannu!"

Seeing that the red lady was not very confident when she said this, Cao Yue also knew what was going on, but he didn't break it, nodded and smiled to express his gratitude: "Then thank you Red Girl, if this battle can repel Jiannu and keep Datong, I will definitely ask the court for credit, and let the emperor reward you as a fierce woman." I also believe that your two maids will be safe and sound, and there are many of our brothers outside the city, and they will definitely help you!"

"I hope so, but the slave family doesn't need the reward of the dog emperor, but wants to kill him with a sword and seek justice for the people of the world," the red lady smiled and said: "General Cao, the slave family will go to rest first, and you can come to the slave family to inquire if you have something!"

"Okay, you go and rest first, or go back to the original courtyard, if you need someone to serve, I will arrange it for you!"

"Thank you!" The red lady bowed slightly, turned around and left. But as soon as he took a step, he tilted his body with an ouch......