When a leaf falls, you know that the world is autumn.

Yiwu Lu Mountain changed color overnight, when the first maple leaf turned red, in a blink of an eye, the whole mountain was full of five colors in a few days, red, yellow, blue and green were reflected in each other, in the meantime, it was like a fairyland. Ohgamo will not be able to sigh at the magic and beauty of nature, and when the maple leaves are all over the mountain, what kind of world will it be? Ogamo would stand on the top of a slope of Mt. Yiwulu, looking down at the bustling camp at the bottom of the hillside, which had become a busy construction site, and his face couldn't help but show an anxious look when he looked there.

Legend has it that Shun divided the country into 12 states, each state sealed a mountain as a state town, Yiwu Lu Mountain was named the town mountain of Youzhou in the north, and later the Zhou Dynasty and sealed Yiwu Lu Mountain as one of the five towns of five mountains. During the Northern Wei Dynasty, the Khitan surrendered to the Northern Wei Dynasty, and the northern part of Yiwu Lu Mountain belonged to the Khitan grazing land.

Emperor Wen of Sui Emperor Yang Jian in the 14th year of the emperor, issued an edict to build the shrine of Yiwu Lushan - Beizhen Temple, China's five major towns and mountains, namely East Town Yishan, West Town Wushan, Zhongzhen Huo Mountain, South Town Huiji Mountain, North Town Yiwu Lu Mountain. This Yiwulu Mountain is not only the Beizhen Mountain in the Central Plains, but also extremely important in the hearts of the Khitan people and is regarded as a holy mountain.

Today, the largest tribe of the Khitan Ten Tribes Alliance, the Elder Hemo Society, was ordered by the Emperor of the Central Plains to gather the troops of their respective states together with the leaders of the Khitan Ten Tribes, and gathered here to establish a camp here. Here is connected to the grassland in the west and the Liaohe Plain in the east, and there is a Yiwulu Mountain in the southwest, which makes it a necessary place for the north and south routes from Yingzhou in western Liaoning to the Liaohe Plain.

In that gradually yellowing hilly land, more than 20,000 people are desperately rushing to build a camp with axes, hammers, shovels and other tools. The emperor's order was urgent, and the ministries had to do their best to follow it. Although there were not enough warriors to summon for a while, the herdsmen in the vicinity had to summon them to help with the repair.

The sound of all kinds of shouting trumpets was accompanied by the sound of oil hammers. One after another, the wooden stakes that had just been cut down with the thick mouth of the bowl were smashed into the ground. A fence wall is forming. In the Khitan army of city building, there is a group of people who arrived from Youzhou on horseback, these people have a wealth of knowledge of city building, but they are not craftsmen, nor officials, listen to the team of Sui army officers who escorted them to say that this group of people is a teacher and student of civil engineering in the Department of Architecture of Youzhou Northern University, and they rushed over to help them build the city at the behest of the emperor, and also brought a large number of building tools. According to the plan of these teachers and students. They want to build a very complex walled city, specifically six joint walled cities of one large and five small, around a main walled city, and five small villages around it, with the circumference of the large village being 1,000 steps and the small village being 300 steps. The villages are one mile apart, and the walled city of the village is to drive a row of thick wooden stakes on the ground first, and then a row of wooden stakes every three zhang wide. Then fill in the middle of the two rows of wooden piles, tamp them slightly, and insert a row of small wooden piles four feet high on top to form a female wall. After this repair, the defensive performance of the wall is higher and can withstand the impact. Moreover, the soldiers guarding can also stand on the wall to guard, and there is a female wall to protect most of the body.

And every twenty steps of the wall, an arrow tower was built. The tower is six feet high, allowing the archer to shoot the enemy better from a high position. The small village has two doors each. The small villages on both sides are connected, and the big villages are open to five doors to connect the five small villages.

According to the plan of these professional Han people, after the walled wall is erected, a ditch must be dug along the wall. In addition, in the open space outside the wall, you have to dig a dense trap pit, and you have to plant antlers, cloth a horse rejection, and sprinkle thistle terrestris. He has also fought several battles with the Emperor of the Central Plains, and has seen the genius emperor quickly build an ice castle with water in the cold winter, and has seen the Han people's car array move the castle, but seeing that these Han gentlemen are actually making an ambush so complicated, I can't help but sigh. Originally, when he received the emperor's order, he planned to directly take ten Khitan soldiers and horses, and then lay in ambush at this mountain pass, and then suddenly killed with light cavalry, used cavalry to storm the enemy formation, and charged with the Goguryeo people. But looking at it now, his plan is simply not a plan, look at the people, they actually want to build a city. With such a large, five, small, and six walled cities, how could the Goguryeo people break through their own interception?

However, the amount of construction of the walled city is a bit large, and it is three hundred miles from Yingzhou Liucheng to here, which seems to be far away, but for the Goguryeo army with many war horses, it is not a few days away. He repeatedly raised his concern to these Han city construction experts and gentlemen, but they calmly told him that they had time and could complete it. The Mohui didn't know where their confidence came from, but they still chose to believe it, but they kept sending people to urge the leaders of the various tribes to gather their own tribesmen and horses, whether they were old people, children, or women, as long as they could work. Mo Hui has been following the emperor for a while, and he knows very well what this emperor is like, and if he does things with him, as long as he does a good job, he will not be treated badly. Khitan and Xi and Xi are now all subordinate to the Great Sui's Saibei Province, and the Su branch of the Xi Ahui Department became the emperor's concubine with his daughter, and the Xi people have a closer relationship with the Sui, so they were able to become the left political envoy of the Saibei Province, but he was only the right political envoy. However, he heard those Han gentlemen chatting and said that after the victory of the Eastern Crusade, at least Liaodong can be recovered, and at that time, the imperial court will set up Liaodong Province in the east of Liaoxi Province, and Liaobei Province in the north of Liaohe, this Liaobei Province also includes a lot of Khitan territory, and the Mohui secretly plans to wait for the establishment of Liaobei Province, and strive to be a political envoy of Liaobei Province.

But the premise is that you can fight this battle.

It is not easy to intercept 50,000 Goguryeo people, and it is 50,000 horses led by King Gao Yuan. Fortunately, they are not fighting alone, the Su Zhizheng of the Xi clan is leading the troops from the southwest, they will bite Gao Yuan's ass and chase all the way here, and then the two clans will attack, not to mention that the Xi clan should also gather troops and horses to rush south, in addition, the emperor has also gathered a new army is rushing to Liaoxi, in short, what he needs is to stop Gao Yuan, not let him pass through his own defense line, and it is done.

What Mohui is most worried about now is that Gao Yuan will appear here at any time, and his walled city is only about half completed, although the progress is very fast, but it is still not completed, if the Goguryeo people kill, it will be difficult to stop the 50,000 Goguryeo people with this half-completed camp.

A cloud of smoke and dust rose in the distance, and more than 100 Khitan cavalry galloped from the west, and they waved the banner of Pegasus, and the guerrilla guards on the periphery of the camp only routinely checked and let them go.

The cavalry rushed straight up the hillside, and the Mohui recognized the leader from afar was his son Luluo, who had a good relationship with the current emperor who was wandering on the grassland in the past, and once acted as the emperor's eldest brother, protector, and also liked Chen Wan. It's a pity that what she likes is Jinshang, and later he listened to his own persuasion and married Su Zhi's daughter Yilan, which can be regarded as a brother-in-law with Jinshang. Later, he joined the personal guard of today, and entered the martial arts hall to study, and followed the emperor to make a few military exploits, and was able to be promoted to the general Mingwei from Wupin, a few days ago, he came from Youzhou by holy decree, as the emperor's liaison officer, to assist him in intercepting Gao Yuan. It didn't take long, but the Mohui felt that his son Duluo had changed a lot, it turned out that the son was a warrior in the younger generation of Khitan, but now the son seems to be more restrained, less of the sharpness that will be revealed, but a little more calm, this change makes the Mohui very pleased, the son has matured and become a qualified leader.

"Father!" Darlo jumped off his horse and strode up, and greeted him first.

"I've been with the emperor for a while, and I don't know if I've learned anything else, but I learned this etiquette very well." Mohui happily patted his son on the shoulder and smiled.

Duluo's figure is becoming more and more upright and vigorous, with a square face, thick eyebrows and big eyes, he did not have the same hair as the Khitans on his original head, but kept Han-style hair, but now he has cut a long long hair, but it is a short haircut, which is very refreshing and clean. He was a little unaccustomed to it at first, but his son said that in the emperor's army, those who were not Han soldiers were not Han people, because of the different customs of various ethnic groups, they originally had all kinds of hairstyles, and then they simply kept this kind of short haircut, which not only appeared to be a unified system, but also slightly different from the soldiers of the Han army. The son was holding a steel helmet in his hand, a mirror armor on his chest and back, a red battle robe on the outside, and a long silk cloak buttoned on his shoulders. And this is not a luxury for his son, but in the emperor's army, the soldiers are like this, and silk clothes are standard clothing. Silk has an excellent anti-arrow effect, which can wrap the arrow and greatly reduce the damage of the bow and arrow. This made the Mohui extremely sighing, the silk of the Central Plains is an extremely expensive thing on the grassland, and only a very small number of tribal leaders can buy and wear it, but the millions of soldiers in the Central Plains actually wear silk and boots, which is really impressive. What's more, the dazzling mirror armor on their bodies is even more enviable. Although the soldiers under his command also had the support of the imperial court, they had to be exchanged for materials, and although the equipment they exchanged was much better than before, they were always inferior to the current equipment of the Sui army.

Luo Luo looked back at the construction site at the foot of the mountain and frowned slightly, "It seems that the camp will take some time to complete, father, how long will it take?" ”

"The main wall of the main village can be completed before dark, and the arrow tower will have to be tomorrow. The walls of the five small villages may not be repaired until dark tomorrow, and the trenches and horse traps may not be completed until the day after tomorrow, and in addition, those gentlemen are still organizing the cutting down of trees and building stone-throwing trucks, wood-beating and other equipment. Mo Hui asked his son, "Is there any movement in the west, and did you find Gao Yuan?" (To be continued......)