The Northern Division of the Han and Qing Dynasties kept sending messages that when the Manchus established the Zhaowuda League in Monan, in order to prevent the Mongols from resisting, according to the region, customs and traditions, the Mongols were divided into fragments, and the large tribes were divided into two or even several banners, and the scope of grazing was demarcated, and the small tribes were encircled.

Except for the heads of the various departments, ordinary herdsmen cannot leave their own pastures for the rest of their lives.

Li Zicheng looked at the marching map in front of him, and was grateful to Huang Taiji in his heart, the Manchu Qing Dynasty split the Mongolian tribes into pieces, which just gave China a chance to break through, especially the practice of entrapping the Mongols, for the Chinese court to implement the national policy of animal husbandry and settlement, almost in the same line, he even doubted that the Manchus were still not nomads.

Li Zicheng was not worried about military conquest, but about post-war management.

In his heart, the Khing'an Governor's Mansion, and even the future Khing'an Province, already have a clear plan, in addition to the Shanggu Mansion that has been formed, as well as the Raole Mansion that is being conquered, and the east and west sides of the Great Khing'an Mountains, including the Mongolian Horqin Department, will be included in the future.

Of course, this was a very distant plan that would accompany the long process of conquering the Manchus.

When setting up the Governor's Mansion in Xing'an, Li Zicheng's eyes were fixed on the south, as far as the border wall of Huaxia.

This area should not be included in the territory of Raole Fu, Hebei Province in China, which bears the heavy responsibility of protecting Beijing, whether it is to naturalize the Mongolian tribes or to protect Beijing's security, the boundaries of Hebei Province should be expanded beyond the border wall.

First, if Hebei Province expands beyond the border wall, it can speed up the marriage and integration between the Han and Mongolian ethnic groups, promote the development of economy and trade, help improve the living standards of the people outside the border wall, and eventually accelerate the naturalization of the Mongols into Han Chinese.

On the other hand, if the border of Hebei Province stops at the border wall, the thinking of the Han people is very likely to be imprisoned within the border wall, and they will despise the backward Mongols outside the border wall.

However, in the history of the Han nation, the disasters added by the nomads outside the border wall to the head of the Han nation can definitely rank among the top three......

Now that there is an opportunity to completely naturalize the nomads and incorporate a large area of land in the north into China, Li Zicheng will naturally not let it go, even if the process is extremely long, full of uncertainties, and even requires a lot of silver!

Second, to defend Beijing, the best way, is not to stick to the side wall, there is no city wall in the world that cannot be broken, passes, the side wall can defend Beijing for a while, but not permanently, the recent Ming Dynasty, the Mongols, the Jurchens have repeatedly knocked on the wall to invade.

Moreover, there are countless passes on the side wall, and to garrison these passes, it requires a lot of manpower, material resources, and financial resources, and the burden on the country is far beyond imagination.

Before firearms became the protagonist of the battlefield, the infantry of the Han land was indeed unable to resist the cavalry of the nomads, unless it relied on strong national strength to build a strong cavalry and destroy the nest of nomads who had no defensive ability as they did in the era of Emperor Wu of the Han Dynasty......

Firearms appeared on the battlefield, and the Han people, who were more developed in science and technology, economy, and culture, found a new way in the battle with the northern nomads - to attack and defend!

Emperor Hongwu and Emperor Yongle of the Ming Dynasty have already tried, although they are not very successful, but they have made a good start after all.

Another strategic measure to defend Beijing is to completely occupy the Yanshan Mountains to the north, and then rely on the Yanshan Mountains to defend against the nomads, rather than relying on the border walls.

The side wall is basically south of the main vein of the various mountain systems of Yanshan, and most of Yanshan has been abandoned, if you rely on Yanshan, you can block the nomads in the flat mountains outside Yanshan, perhaps it is difficult for the infantry of the Han people to go down the mountain to attack the nomadic cavalry under the mountain, but it is also difficult for the nomadic cavalry to attack the Han people on the mountain, and the gap in terrain, population, and weapons is enough to limit the nomadic cavalry outside Yanshan.

Li Zicheng used a red pen to circle a large area of land outside the border wall, and it is not possible to determine the boundary of the land now, and when civil officials are dispatched in the future, they will be asked to determine the boundary between the prefecture and the county according to the mountain, river, and other factors.

The wolf cavalry and the cavalry of the first battalion kept sending back messages, including the Left and Right Banners of Bahrain, the Alu Korqin Banner, the Zalut Division, the Weng Niute Banner, the Zhaowu Da League of the Manchu Dynasty, and only the southernmost Naiman Banner and Ao Han Banner remained.

Li Zicheng led his own soldiers and followed behind the two cavalry, mainly to set up prefectures and counties to pacify the local herdsmen.

The Great Khing'an Mountains is a mountain range that is approximately north-south, about 2,500 miles long from north to south, and about 500 miles wide from east to west.

To the south of it is the Yanshan Mountains, on which the Han people relied to defend themselves against the nomads of the north.

The Yanshan Mountains are in an east-west direction, almost forming an inverted "Ding" with the Great Khing'an Mountains.

Different from the inverted "Ding" character, there is a gap between the two large mountain ranges, this fracture is the famous Xilamulun River, the Xilamulun River is fed with fresh water from the Great Xing'an Mountains in the north and the Yanshan Mountain in the south, the river is extremely wide, the land on both sides is fertile, the water and grass are vigorous, and it has always been a paradise for nomads.

Xilamulun River is the upper reaches of the Xiliao River, the Han Dynasty called Tuhu Zhenshui, after the Sui and Tang Dynasties, it is called Huangshui, it is the most important passage connecting the Mongolian Plateau in the west and the Horqin grassland in the east, Huang Taiji has repeatedly conquered Southern Mongolia, and the cavalry is along the Xilamulun River to the west.

In the upper reaches of the Xilamulun River, there is a tributary on the north bank, called the Chaganmulun River, and the Right Banner of Bahrain is stationed in the Dervishesh Mountain on the right bank of the Chaganmulun River; There is a tributary called Shaolang River on the south bank, the two banks of the Shaolang River are the pastures of the Weng Niute Banner, and there is a place called Zhao Wuda in the middle reaches of the right bank, which is not only the core of the Weng Niu Special Banner, but also the location of the Manchu Zhao Wu Da League.

Li Zicheng rushed to Dervishesh Mountain and reorganized the Right Banner of Bahrain into Ganshang County, which was not renamed, but the Xilamulun River was renamed the Xiliao River, and the Chaganmulun River was renamed the Juliu River.

There are more than 2,000 people in Dingkou in Ganshang County, which is a place where herdsmen are relatively concentrated, so Li Zicheng renamed Wang Sebuteng of Zasakdoro County as Zhou Wu and appointed him as the magistrate of the county.

He personally crossed the Xiliao River and came to Zhaowuda on the right bank of the Shaolang River, and found that it was just a small hillside, and a high platform was built on the hillside, and there was nothing else, so he gave up his plan to establish a mansion here.

Zhao Wuda was renamed Susi, and the Weng Niu Special Department was also reorganized into Susi County.

Later, Li Zicheng crossed the Xiliao River again, and prepared to set up the Bahrain Left Banner, Alu Korqin Banner, and Zalut Department at the southern foot of the Great Xing'an Mountains as the three counties of Meiji, Xingzheng, and Jiangzhu respectively, but when he arrived at the Bahrain Left Banner, the herald sent by Wang Junzhuo told him: In the territory of the Alukorqin Banner, a place called Hansumu, he found the capital that Lin Dan Khan once established - Chahanhot!

Li Zi established the naturalization of Zasak Manzhu Xili into a Han Chinese, gave him the name Zhang Shangli, and let him serve as the county of Meiji, and the matter of the left banner of Bahrain was also handed over to him, and he hurriedly rushed to the Alukorqin banner with his own soldiers.

Under the guidance of the cavalry, Li Zicheng came to Hansumu between the Tianshan East River and the Haier River, and sure enough, he found the remains of Chahanhot.

However, what disappointed him was that Lin Dan Khan's capital city was already dilapidated, and the walls of bluestone mixed with loess had long been mottled, even more dilapidated than his old house in Mizhi.

Li Shuji was not born in Chahanhot, and he has never even been to Chahanhot, only Li Na still has a trace of impression, after he married Lin Dan Khan, he once lived here for a period of time, "Your Majesty, 'Chahanhot' is the name of the Mongolians, it is said that the Ming Dynasty at that time, called it 'White City'!"

"White City?" Li Zicheng raised his eyes and looked around, but he couldn't see the white color at all, could it be a problem with translation?

However, Lin Dan Khan has long since passed away, and Chahanhot has lost its original glory, and the only significance is to leave a relic for future generations.

Li Zicheng has gone all the way to erase the traces of the Mongols' life.

Naturally, it will not leave Chahanhot for the Mongols to worship in the future.

Li Shuji is a little sad, his father and mother are gone, Chahanhot is the only thought left by his father Khan, right? Although this is the first time to come to Chahanhot, after all, it is something left by Father Khan!

She looked at Li Zicheng, whose face was calm, and said, "How does the emperor deal with Chahanhot?" ”

"What does Concubine Hua think?"

"Can you keep Chahanhot?"

"Keep?" Li Zicheng understood Li Shuji's thoughts, thought for a moment, and said, "Concubine Hua is saying that this pile of rocks and floating soil will be retained?" Let him be exposed to the sun and the dew at night, and the rain and wind blow? ”

Li Shuji sighed leisurely: "I'm afraid this won't last......"

"Yes, if you want to keep Chahanhot, you can send manpower to repair it, not to mention the silver," Li Zicheng said: "However, as long as it is repaired, it will lose its original taste, and Chahanhot will not be Chahanhot!"

"White City?" Li Na read softly: "The emperor wants to ......"

Li Zicheng said secretly, how did Li Na understand my thoughts?

If necessary, Chahanhot can be repaired, but it is no longer Lin Dan Khan's Chahanhot, but the white city of the Han people, and the repaired Baicheng cannot be abandoned, so it will be used as the county government of Baicheng County......

I knew that Lin Dan Khan had left a capital here, and I didn't have to bother to find the name of the county in the Book of Songs......

It's just that in this way, is it too cruel to Li Shuji?

Li Shuji seemed to understand what Li Na meant, frowned lightly, hesitated for a moment, suddenly relaxed, shook his head, and said: "Your Majesty, it's because the concubine is too stubborn, the Great Khan no longer exists, and the Mongols will soon not exist, so what's the use of leaving the Khan City?" If the emperor repairs this white city, let him play its role for the Han people, for China, and for the emperor!"

"Concubine Hua really thinks so?"

Li Shuji smiled bitterly, "The concubine body was originally ...... However, Concubine Mu's words reminded the concubine body, even the concubine body is Han Chinese, what is the use of leaving the Mongol Khan City? ”

"Concubine Hua can think like this, I am very relieved!" Li Zicheng said: "Although I have conquered many tribes, they are all naturalized as Han Chinese, but outside the border wall, there is still no city, I plan to repair Baicheng, as the county government of Baicheng County, Lin Dan Khan's hard work back then, finally play its due role......"