In the endless steppes of southern Mongolia, especially in the flat and boundless Sanbula River, in the harsh winter of cold wind and heavy snow, if there is a strong city to stand on, if there is a roof to protect from the wind and snow, it will be a very happy thing.

Just when Huang Taiji was enjoying such "happiness" in the palace of Kuku and Tun, and at the same time made up his mind to prepare to retreat to Liaodong, the heart of Haoge, the young banner owner of the Yellow Banner, was full of infinite yearning for any city.

However, he was destined to find no such city in Sanbula River to avoid the endless wind and snow, to avoid the Ming cavalry who made him more emaciated than the wind and snow.

As early as his youth, Haoge, who was not afraid of tigers as a newborn calf, went out to fight with the Eight Banners Army, governing the army and leading the troops, and marching to fight, which was not a problem for a long time.

Although he has always been deficient in the city government, which makes Huang Taiji, who is very strategic, not very satisfied, but his fierce and brave fighting in the battle, even Huang Taiji is proud of this eldest son.

The reason why Huang Taiji let him lead the banner alone also shows his attitude towards Hauge, the eldest son, who basically recognizes.

Since Haoge was ordered to follow Yue Tuo as a partial division of the East Road to the junction of Xuanfu and Jizhen Ming Army Defense Zone, first garrisoned a large number of troops of the Ming army in the two places outside the Dushikou, and later heard that the Yellow Flag broke the Hukou and entered, and Yue Tuo also led the Red Flag Army to conquer the victory, and drove straight into the hinterland of the Ming Dynasty Xuanda from the victory, Haoge was also itching, and it didn't take long for him to storm the Dushikou that hung alone in the north.

However, the Dushikou is very different from the victory mouth and the killing Hukou.

Because Dushikou is close to Jizhen and close to Jingshi, Sun Chengzong, who was ordered to inspect the northern side of the Sai, allocated ten Shenwei invincible general cannons that were painstakingly transported from the Jingshi Military Garrison to Saiwai, that is, the Hongyi cannons imitated by the Baiyecheng Artillery Foundry under the Armament Academy, and allocated ten pieces to the equipment of the Dushi Fort.

Deng Zuyu, the deputy chief soldier of Xuanfu Town, who sat in Dushikou, was not an idle person, and since his arrival, he has carefully renovated the city defense and operated the defense line of the Dushi Fort in the north of the country to be airtight.

When Hauge commanded the army with the yellow flag to press the formation, forcing the Horqin left wing Bel Zaisang, who was suspicious and did not want to attack the fort, to lead the army to storm the monolith fort, not only the Horqin people in the Horqin area of the Zaisan were severely killed and wounded by the rain of arrows and thunderbolts at the head of the city, but also the army with the yellow flag that was two or three miles away to supervise the battle was also beaten back repeatedly by the ten Hongyi cannons at the head of the city.

After the failure of this onslaught on the monolithic fort, Haoge, who finally recognized the situation, was persuaded by the ministers of the Yellow Banner Yang Shan, Yi Xun, Gushan Ezhen Balai Shan, Suo Hai and others, and turned to attack Duolunoer, hoping to lure out the Ming army in the monolith fort and then annihilate it in the field.

However, Deng Zuyu was not moved at all.

However, the approach of Haoge and others successfully attracted the Ming army of Rehebao led by Sun Chengzong and the Ming army outside the border of Jizhen to come.

On November 21, Sun Chengzong, who was behind a permanent fortification east of Duolunor, received an order from Juyong Pass to immediately organize his men and horses to launch a counterattack.

In the early morning of the next day, the 5,000 cavalry of the Wulie Battalion under the command of Cao Wenzhao, who had already suppressed the ambition of building a meritorious career, rushed out of the Bagua-type super-large camp that was more than five miles long in the upper part of the plain.

Under the command of Cao Wenzhao, the 5,000 cavalry of the Wulie Battalion were divided into three routes, and galloped out from the three directions of Qianmen (northwest), Duimen (due west), and Kunmen (southwest) of the Bagua-type Ming army camp, and rushed straight to the headquarters of the Yellow Banner Forward Cavalry Ahanikan, who had just arrived near Duolunoer.

At the same time, Sun Chengzong was in the center of the camp, commanding a large number of infantry archers, spearmen, musketeers and gunners in the Jianchang Battalion and the Santun Battalion, waiting behind the chest walls and on the roads into the camp.

The cavalry of Cao Wenzhao's cavalry charged and provoked, naturally aroused the anger of the yellow banner vanguard general Ahanikan, and the two armies fought fiercely for most of the hour in the open and flat field between the Tucheng of Duoluno and Sun Chengzong's Bagua camp, and finally ended with the arrival of the main force led by Haoge and Zhaisang, and the withdrawal of hundreds of fallen horses and wounded soldiers from Cao Wenzhao's headquarters to the Ming army camp.

However, Cao Wenzhao's attack also caused almost considerable casualties to the Red Banner Forward Cavalry of the Ahanikan Division.

After Hauge arrived with the main force, he soon commanded the main force under the advice of Ahanikan and launched an attack on the Ming camp.

In his opinion, when the Ming army lived in the fortified city, his more than 20,000 cavalry could not exert much combat power, but when he reached the plains and wilderness, how could he resist the army of more than 26,000 horsemen under his command with the large battalion composed of low earth and stone breastwork walls in front of him? !

And Yang Shan and Yi Xun, who are the head of the flag and the assistant director of the flag of the Yellow Flag, and the left and right wings of Gushan Ezhen Balai Mountain, Suo Hai and others also think so.

In the hearts of these people, the Ming army is the Ming army, and without the fortified city, they are nothing.

In this way, the nearly 60 Niulu army with the yellow banner led by Haoge, as well as the remaining 5,000 Korqin cavalry of Beile Zhaisang on the left wing of Horqin after the onslaught on Dushikou, just arrived at the foot of Duolunuoer City, and followed the cavalry of Cao Wenzhao, who "fled", and rushed to the Ming army's seemingly flawed camp.

It's just that the big camp that Sun Chengzong worked so hard to set up seems to be full of loopholes, but in fact, it is full of traps.

Literati leaders like to play with strategies and arrange troops, and Sun Chengzong is naturally indispensable to this literati.

This gossip array that he learned from Zhuge Wuhou, if it is placed in the hands of someone who only knows how to talk on paper, it will naturally be self-defeating.

But after being brought by Sun Chengzong, with the impregnable concrete breastwork and the sharp firearms of the Ming soldiers, its power should not be underestimated.

Sun Chengzong's Bagua-type camp, on each of the eight directions, those places that are equivalent to the yin and yang of the gossip, all built cement stone concrete breast walls with different spacing lengths, some leaving mouths and some not leaving mouths.

Between each and every direction, there was a passage in and out of the camp.

Behind each breastwork, there were a different number of musketeers, spearmen, and archers.

In the center of the camp, a huge artillery position was arranged, and they were waiting for the eight passages in and out of the camp, such as Qianmen, Kunmen, and Duimen, waiting for the enemy to send them to attack and die.

Haoge and others who are not in the middle of the situation led by Yangshan and Balai Mountain to attack the northwest of the Ming army camp (Qiangua, Qianmen), and led by Yixun and Suohai to attack the southwest of the Ming army camp (Kungua, Kunmen), and led more than a dozen Niu Lu and Zhaisang to attack the west of the Ming army camp (Qiangua, Koumen).

At noon on November 22, with the order of Hauge, the owner of the Yellow Banner, the horn trumpets that often sounded in the fields outside the city of Duolunor, which was common when the Jurchen Eight Banners army launched an attack.

With the sound of bull horns, more than 24,000 horsemen and Horqin Mongol cavalry, divided into three routes, like three arrows off the string, rushed to the camp of the Ming army in the sound of rumbling horses' hooves.

And Sun Chengzong, who was looking west against the cold wind on the watchtower in the center of the camp, was sweating in the palms of his hands holding the binoculars in the cold weather, and he gritted his teeth at this time to overcome the tension in his heart.

He couldn't help but be nervous, the Jurchen cavalry and the Horqin cavalry of 20,000 or 30,000 cavalry rushed over, and in the sound of horses' hooves that shook the earth and the earth, no matter how experienced you were in battle and battle, you couldn't help but worry about your own fate and the fate of tens of thousands of soldiers under your command.

Since Sun Chengzong went out to patrol the north, he has spent a lot of manpower and material resources to build six such large-scale fortifications, as well as a large number of horse retaining walls, outside the border of Jizhen, outside the Gubeikou and Xifengkou, in Balihan, in Duolunuoer, and near the three towers.

All of this he did was to one day fight to the death against the Jianju and Mongol cavalry who came to attack in semi-field conditions.

Huang Taiji led the army to bypass Ulan Hada, bypass these large fortifications outside the edge of Jizhen, and go directly west to Chahar, which made Sun Chengzong extremely disappointed in his heart.

Sun Chengzong, who has always liked to build permanent fortifications to offset the strong combat power of the Jianyu cavalry, still did not change this strategic thinking when he went out to patrol the north.

As a result, a large number of permanent fortifications outside the border of Jizhen, just like the Ningjin Defense Line that he had built with all his painstaking efforts, became decorations in this war against the prisoners.

This made him very unwilling in his heart, and it also reminded him from time to time of the accusations and criticisms of some ministers in the court and central government during the Apocalypse that he spent a lot of money and food on building the Ningjin defense line and military salaries.

Now, seeing the 20,000 or 30,000 Jianyu and the Mongol cavalry rushing towards his carefully constructed fortifications, although his heart was worried, it quickly turned into relief.

His fortification strategy, though time-consuming, laborious, and costly, was ultimately useful.