If you don't go to the Great Wall, you are not a hero.

Climb the Great Wall and follow the stairs to the top. Condescendingly, the south is Guannei Mayi, and the north is Saiwai Monan.

"The autumn wind rises, and you travel thousands of miles.

What can be done for thousands of miles, building the Great Wall across the desert······"

Luo Cheng stood on the Great Wall, caressed the battlements of the Great Wall, and couldn't help chanting a poem, which was a poem of Yuefu, called the Great Wall of Drinking Horses, which was first written in the Han Dynasty.

However, Yang Guangcai, the son of heaven in this dynasty, also wrote a poem about drinking horses and the Great Wall caves, which is Luo Chengyin's song, which is very domineering, and everyone at the time commented that he has the style of Wei Wu, which can be compared with Cao Cao. Cao Cao is not only powerful in commanding the army and governing the country, but his poems are also excellent, Yang Guang's poems can be compared with Cao Cao, and he is indeed a cow.

"Dashuai, do you expect that the beginning will pass from now on?" The eldest grandson Wuji asked.

This kid infiltrated Khan City alone to persuade Princess Yicheng to surrender the city, so he was made an exception by Luo Cheng and appointed as a captain, and he was also arranged in Baima Yicong.

This mouth is called Shenhekou, which is the necessary mouth of Shenhe Road, and Shenhe Road is the place where the three roads of Ma Yi Dingxiang must pass. Previously, Shibi also went south here, but now that he wants to go back, he naturally still walks here. So as long as we stay here, we can wait for the rabbit. ”

Shenhekou, also called the White Wolf Pass in the Tang Dynasty, called the West Mouth in the Ming Dynasty, or kill Hukou, kill the tiger's mouth, it is very famous, it is the only way for Datong to go to Hohehot.

Even in later generations, the important highway from Datong to Hohhot is also this route.

There is a continuous outer Great Wall, and the entrance is that the outer Great Wall is an important natural pass.

He is bordered by Tangzi Mountain in the east, Dabao Mountain in the west, Leigong Mountain and Miaotou Mountain in the north, and the Great Wall extends from northeast to southwest, like a semicircular wall that surrounds the mouth of the tiger.

The cliffs on the east and west sides stand steeply, and the Purple River runs through it from south to north, forming a natural pass that is not more than 200 meters wide and more than 3,000 meters long.

The open Purple River Valley between the two mountains has been an important passage between the north and south since ancient times.

Shenhekou used to be an important pass of the Great Wall, but after the establishment of the Sui Dynasty, the focus was on defending the inner Great Wall on the first line of Yanmen, which was also the Seneigi Siege of the Northern Wei Dynasty.

For the outer line of the Great Wall, in fact, the control is not strong, the imperial court only set up Mayi County outside the Yanmen, close to the side of the inner Great Wall, there are some cities and villages, and further north of the outer Great Wall, in fact, there are only some small forts, occasionally stationed when the border soldiers patrol.

More than ten years after the return of the Qimin Khan to the Sui, there was no war in Monan, and the Sui was stable, so the first line of the Outer Great Wall became more relaxed.

Shibi Khan went south, and almost without any obstacles, he crossed this dangerous entrance.

"The Great Wall is already very dilapidated."

Luo Cheng sighed a little, grass has grown on the Great Wall, and some places have even collapsed.

After the Sui Dynasty unified the world, soon the northern overlord Turks were engaged in internal strife by Yang Jian's strategy of separating the strong and combining the weak.

With such an advantage, the Great Wall of the Sui Dynasty was not repaired on a large scale.

That is, after Yang Guang succeeded to the throne, he overhauled once, and that time it was repaired from Yulin County in the west to the northwest of Mayi in the east, and it was not repaired when it happened to be near Shenhekou.

"This place is only two hundred and forty miles away from the Monan Khan Court, only two hundred and twenty miles away from Mayi City in the south, and only one hundred and seventy miles away from Yunnei in the east.

The Great Wall of Shenhekou is built of earth, without bricks, and looks gray and dilapidated, but it can still be seen that the danger of this fortress is broken.

At this time, there are countless people and horses in the reinforcement and repair of this pass of Shenhekou.

The city of Shenhekou is rapidly changing its new appearance, and in this city on Tuesday, the four-zhang high Guancheng has been stationed in the loyal army.

And inside and outside the city, Luo Cheng also sent people to repair and strengthen and expand several fortresses, although the size is not as good as this fortress, but several fortresses are connected by walls, forming a horn to help each other.

High on the high fortress, you can actually get a glimpse of the terrain here.

There are Daibei basins of different sizes in the north and south here, and this is the valley valley between the mountains, which is the narrowest and most dangerous crossroads connecting the basins.

To the northeast of Guancheng is the Liangcheng Basin, as well as the Shenhepi Lake, where 60,000 Turkic soldiers and horses are now stationed.

It's just that these Turkic tribesmen and horses are all led by Ashina Simo and Princess Yicheng, and they are under Luo Cheng's orders.

Luo Cheng never planned to run to Yanmen.

He didn't plan to fight Shibi in Khan City, after all, Khan City was built on the Monan Grassland, and there was no danger to defend.

Luo Cheng already knew that Shibi Khan didn't take much advantage of going south.

Although he broke through more than 40 cities of Yanmen in Mayi, he failed to capture Yanmen City, and he did not rob the emperor and hundreds of officials, and he also lost more than 100,000 horses.

Although this trip to the south also robbed a lot of people, Luo Cheng thought that it was a loss.

After all, Yanmen and Mayi are both border counties, and the population itself is not much, and more than 40 cities have been broken at the beginning, and a total of 200,000 people have not been robbed.

Losing 120,000 troops, destroying more than 40 cities of the Sui Dynasty, killing about 100,000 Sui troops, and robbing less than 200,000 people, this is a loss-making business.

What's more, Luo Cheng also copied his Khan court, beheaded more than 10,000 soldiers and horses in Monan, and recruited 60,000 of his troops.

It's just that Luo Cheng is not so easy to satisfy.

Shibi withdrew from Yanmen, but if he wanted to return to the grassland, it was not so easy.

"I just received the news that His Majesty has appointed General Feng Siye as the envoy of Dingxiang Dao Jiedu, and ordered Wang Rengong, the governor of Mayi, and the envoy of Mo Nan Dao Jiedu to send troops to cooperate with General Siye to pursue Shibi."

"The emperor also decreed that the Duke of Chu should control the soldiers and horses of the four towns."

"What about the Emperor?" Luo Cheng asked.

The scar on the face of the purple-faced Heavenly King Zhao Gui was purple and purple, and those who were familiar with him knew that this was a sign that he was very unhappy.

As soon as the siege of Yanmen was lifted, the emperor immediately went to Jinyang Palace in Taiyuan, and took away the hundred officials and the army of King Qin. General Siye asked for pursuit, but the emperor refused, and it was General Siye who resisted the order and led the rest of the Left First Army to the north with 8,000 people, and the emperor issued a decree to award him as the envoy of the Dingxiang Dao Festival. ”

He said with some annoyance, "We galloped two thousand miles, went deep into the Monan Khan's court behind the enemy, surrounded Wei to save Zhao, and King Qin rescued the driver, but the emperor relieved the siege, but immediately forgot about us." If it weren't for the heirs, we would have been sold, and we would have to face the 200,000 army alone. ”