After the early morning of the next day, several pieces of information related to Jiannu's southern invasion had already returned.

Sun Chuanting, who originally thought that this was just Cao Yue's plan to deal with him and prevent the imperial court from seizing his army, finally fully believed that Jiannu really went all out to attack the south, and a big war was coming. Early the next morning, when Cao Yue came to visit and was about to discuss with him how to deal with it, he did not question anything anymore, but inquired about the situation in detail.

Last night, when they received the first military intelligence report, the two had a discussion, but in the end, Cao Yue still did not discuss further on the grounds that Sun Chuanting was tired from the journey, Jiannu would not arrive soon, and the news still needed to be confirmed. Today, everything is confirmed, and how to deal with this southern invasion of Jiannu is the most urgent matter.

According to the analysis of the situation reported by the military intelligence, the army of Jiannu should still have about five days to travel from Datong, and Sun Chuanting was very curious about how Cao Yue did it to find out the movements of the army of Jiannu so early. Cao Yue also simply told Sun Chuanting about the situation, and he sent some personnel to Shengjing to inquire about the situation of Jiannu, and if Jiannu had any changes, he could report it as soon as possible.

"Flying Pigeon Biography?!" Hearing Cao Yue say this word, Sun Chuanting was only surprised and didn't have too many questions.

Cao Yue is not the only one who transmits military information in this way, many people have used this method before, but the bird flies in the sky, often flying without knowing where to go, and the reliability of transmitting intelligence is not insured by the transmission of people, so this method is not used on a large scale in the army.

This time, Cao Yue got the news that the Jiannu army was about to march south again, and it was a national expedition to the south, no matter what, it was a fortunate thing, and I had time to deal with it.

Sun Chuanting, together with Cao Yue, Wei Daben, the prefect of Datong, and Zhang An, the supervisor of Datong Town, jointly reported the news to the imperial court, so that the imperial court could respond. After the news was reported to Beijing on a fast horse, they also began to discuss how to deal with the Jiannu army.

No matter who knows, this Jiannu southern invasion is completely different from the last time Duoduo led tens of thousands of people to try to sneak attack Datong, this time the Jiannu army has almost 200,000, and almost most of the Jurchen elite have gone south. Jiannu's strength is several times that of the Datong Army, and the commander of the army is still Dolgon, the actual ruler of Jiannu. "It's going to be a tough battle," everyone believes, and Datong will face a life-and-death test.

After hearing the news announced by Cao Yue, Zhu Chuanqi, the acting king, and Zhang An, the supervisor of Datong Town, were all frightened, and Wei Daben, the prefect of Datong, also changed his face. Sun Chuanting, who had just been released from prison, was not afraid, he was still a little excited, thinking that he had come to Datong at the right time to witness and even personally command a large-scale war.

Of course, Cao Yue is also a little nervous, but he is also full of pride, this time he will compete with the famous Manchu general Dolgon, he is a little faintly excited, if he can defeat the hundreds of thousands of Jiannu army led by Dolgon, then he will be famous through the ages, included in the list of famous generals. Later generations do not count how he defeated the Jiannu army, but only remember his exploits.

He secretly made up his mind that no matter what, he would fight this battle well, at least not lose it.

Defend Datong City and don't let Jiannu take advantage of it, even if he can't recreate the army of slaves, he is still a hero.

Acting King Zhu Chuanqi, Datong Town Supervisor Zhang An, and Datong Prefect Wei Daben did not understand military affairs, and they had seen Cao Yue's power, so when they discussed the military situation, they did not express any actual opinions, and they all fixed their eyes on Cao Yue. And Sun Chuanting has experienced a lot of wars, and he has also fought side by side with Cao Wenzhao, so it can be said that he is a more competent commander, and he has a lot to say in how to fight.

However, during the discussion of how to resist Jiannu's southern invasion, Sun Chuanting had a dispute with Cao Yue.

Cao Yue suggested that all the guards and defenders near Datong be withdrawn, and that hundreds or thousands of soldiers and horses in those places should be withdrawn to Datong City, so as to enrich the strength of the Datong defenders, and then move the people near Datong to Datong City and other prefectures and counties, so as to clear the wilderness for Jiannu again.

Sun Chuanting agreed with Cao Yue's strategy of implementing a strong wall and clearing the wilderness against Jiannu, but did not agree to remove the guards near Datong, believing that the defenders in those places could actually contain Jiannu, so that Jiannu did not dare to attack Datong City with all his might.

The two had a heated argument over this.

Sun Chuanting believes that Cao Bianjiao's army is about to enter the customs, which is a decisive news, if the Jiannu army can be dragged under Datong City, the Datong Town Army can fight with Cao Bianjiao's Eastern Association Army from east to west, defeat the Jiannu army, and even wipe out under Datong City. Because Cao Bianjiao's men and horses performed well in the Battle of Songshan, and Cao Yue's army had won several brilliant victories last year and a few days ago, Sun Chuanting thought that with these two men and horses, he could fight a tough battle with the Jiannu people, so it was a good war strategy to have more places to contain the Jiannu.

But Cao Yue didn't think so, "Lord Sun, I think that even if the defenders in those places are retained, they will eventually become Jiannu's swords, and the defenders near Datong are only a few thousand people at most, and they have no strong fortifications to rely on, if Jiannu attacks with all his might, they will fall in a few days." Even, the Jiannu army is approaching, and the defenders in these places are panicking, and it is possible to flee without a fight!"

Although Sun Chuanting was tough, Cao Yue did not back down at all, insisting on his opinion, "According to humble estimates, the defenders in these places add up to at least more than 10,000 people, although they have not received the same strict training as the Datong Town Army, but in the end they are still more than 10,000 new forces, and they can also play a major role at critical times, we can't let them die in vain." He believes that this time Jiannu poured national strength to attack, and the goal was Datong, and we didn't need to stick to other places, as long as we tried our best to defend Datong. Now the Datong garrison is only 50,000 people, and there is no way to expect more reinforcements, the people of the humble cousin may not enter the customs immediately, and Jiannu may launch a war in Liaodong to contain my army in Liaodong. Therefore, we believe that we should give up some unimportant places, otherwise, there will be many innocent sacrifices!"

After some disputes, in the end, Sun Chuanting took a step back: "Okay, General Cao, what you said has some truth, Datong is the place where you are guarding, in this war, you are the commander of the battlefield, and the official still listens to you." The defenders who evacuated the guards near Datong all returned to Datong City, and then let the people near Datong also take refuge in Datong City.