The number of reinforcements to be dispatched depends on how many enemies are active in the old land of the Qing Dynasty, and if there are fewer reinforcements, it will not help, and if there are too many, it will affect the frontal battlefield.

But Dolgon was not sure of the number of enemy troops attacking the old land of the Qing Dynasty.

Sheng Jing came to report, only said that the enemy army was elusive, and within one day, at most three cities were attacked, and it was impossible to count the number of enemy troops, and the conservative estimate was more than 50,000.

"And it's all elite troops." The officials left behind in Shengjing swore an oath.

Although they haven't seen Shenwuwei, it doesn't prevent them from exaggerating Shenwuwei, otherwise, wouldn't it seem that they are incompetent?!

Besides, it is really impossible to count, and it is not a blind exaggeration.

"Fifty thousand elites?"

If Dichen were with Dolgon, he would have been able to see through this lie. With the strength of the Southern Alliance, especially the Inhuman Legion, it is impossible to send 50,000 men north.

But Dorgon couldn't make such a judgment.

According to common sense, in less than a day, to take Shanhaiguan, annihilate the 8,000 defenders of Shanhaiguan, and create such a big movement in the old land of the Qing Dynasty, 50,000 elites is not much.

"That's the problem!"

Based on the enemy's 50,000 troops, if you want to recapture Shanhaiguan and go deep into the old land to defeat the enemy, it is conservatively estimated that you will also arrange for 150,000 troops to go on the expedition.

The Qing army left behind in Yanjing was only 50,000, and they could not all go north.

This means that at least 130,000 troops will be sent north, and only 370,000 troops will be left on the main battlefield. Compared with the 330,000 troops of the two southern coalition armies, they no longer have a clear advantage.

With such a force, it is simply wishful thinking to defeat the Southern Alliance, Dolgon is not arrogant, and the Inhuman Legion of the opposing camp can defeat the Duoduo Army, which must be extraordinary.

After thinking about it, Dorgon could only choose a compromise.

From the two armies, 70,000 people were each sent north, and the 40,000 troops who stayed in Yanjing were combined to form an army of 180,000 and went north to attack Shanhaiguan.

With an overwhelming numerical superiority, we will strive to solve the "trouble in the back garden" within a week.

As for the main battlefield, the Qing armies of both routes temporarily stopped moving south, rested on the spot, and waited until the northern route army recaptured Shanhaiguan before making plans.

If he held on to his position, Dorgon was still very confident.

Strictly speaking, there was nothing wrong with Dolgon's arrangement, but when Di Chen got the news, his heart trembled inexplicably, and he felt a little uneasy.

Dichen always felt that things would not be so simple.

…………

Three days have passed in the blink of an eye.

The 140,000 Qing troops had already returned to Yanjing, and after joining up with the 40,000 troops left behind in Yanjing, they went north to Shanhaiguan. If it goes well, you will be able to reach the vicinity of the border early the next morning.

The Southern Ming camp was responsible for guarding the Shanhaiguan by the royal fleet, including 15,000 musketeers and 12,000 sword and shield soldiers.

There are more than 100 P1 guns to assist the army in defending the checkpoint.

With such a defensive lineup, even if the Qing army dispatched 180,000 people, Shanhaiguan could hold out for more than three days. It can be seen that in this battle, Ouyang Shuo simply used the resources of the Nanming camp to the extreme.

Even so, according to the current progress, the time for the Qing army to complete the combat mission set by Dolgon will be a little longer than expected.

Fundamentally, it doesn't affect the big picture.

The problem is that the next development of the situation is simply a nightmare for the Qing army. In less than a week, the original good situation has plummeted, and there has been a 180-degree reversal.

The change came in a direction that was overlooked by Dolgon—the Great Western Kingdom.

According to Dolgon's judgment, as long as the Qing army does not take the initiative to attack, the Great Western Kingdom will definitely be content with the status quo and honestly stay in Shaanxi and Shanxi for a generation.

This would have been a very correct judgment.

The premise is that there is no secret letter written by Ouyang Shuo to Zhang Xianzhong.

"There is no end to man's greed."

In the capture of Xi'an, the annihilation of the remnants of the Dashun army, the occupation of the entire Shaanxi Province, and the imminent capture of the entire territory of Shanxi, for Zhang Xianzhong, for the Great Western Kingdom, it is already a very remarkable victory.

Enough for them to show off for a lifetime.

Fortunately, Zhang Xianzhong had an ambition to "dominate the world" and fell for Ouyang Shuo's hook again. Ouyang Shuo's plan is actually very simple, and it is worthless to say.

He just said to Zhang Xianzhong: "Yanjing City will attract a military vacancy, and the city's defense is unprecedentedly weak." If you really want to dominate the world, you must take Yanjing. And this rare vacancy period is the only opportunity for the Great Western Kingdom. If you miss it, you can only be in a corner of the way. ”

Zhang Xianzhong was trusted, so he was naturally suspicious. With his life experience and experience, he really can't imagine that there are still people in this world who only do good deeds and do not ask for anything in return.

The Southern Coalition Army tried its best, and it was enough to contain the Qing army on the main battlefield, and it was enough to capture Shanhaiguan and attract the Qing army that stayed in Yanjing.

"It doesn't make sense!"

Although Zhang Xianzhong was suspicious, he was still fooled in the end. This kind of good thing of "pie in the sky" is originally "rather believe in what it has than believe in it".

On the surface, Zhang Xianzhong did not reply to Ouyang Shuo directly, secretly, he was actually quietly assembling the Great Western Army and arranging it near the Beijing Division.

Once Yanjing is really empty, Zhang Xianzhong will not hesitate.

As Ouyang Shuo said, whether in terms of influence or other aspects, the capture of Yanjing has irreplaceable significance and value for a regime that aims to dominate the world.

Zhang Xianzhong couldn't resist this temptation at all.

On the thirty-ninth day of the battle, shortly after the 180,000 Qing troops left Yanjing, the 120,000 Western Army suddenly entered the Beijing division and went straight to Yanjing.

As one of the most famous leaders of the peasant uprising in the late Ming Dynasty, Zhang Xianzhong never lacked the courage to gamble at critical moments. As long as he can win Yanjing, Zhang Xianzhong is not afraid of blocking the national fortunes of the Great Western Kingdom.

Facing twelve times the enemy army, Yanjing was immediately in a hurry even if it was a majestic city in the world.

After the 120,000 Western Army arrived on the outskirts of Yanjing, they did not rest at all, and launched a fierce attack overnight, making sure to take this Xiongcheng in the shortest possible time.

Zhang Xianzhong is full of confidence.

When Dolgon received the distress message from Yan Jing, his heart immediately chuckled, and his face changed greatly for the first time, and he no longer had his usual composure.

"Turns out, is this the enemy's real hole card?"

The actions of the Southern Coalition were completely unexpected, completely disrupting his previous arrangement. It is equivalent to saying that throughout the whole process, Dolgon was led by Ouyang Shuo's nose.

A series of battle plans formulated by Ouyang Shuo are interlocking, each step seems to be inadvertent, and there is not much murder, but when combined, it can pry the foundation of the Qing Dynasty.