In the 21st century, Zhangbei County is north of Yinshan, and Zhangjiakou is south of Yinshan. The two places are 90 miles in a straight line, and the length of the road is about 100 miles. On the road between these two places, you have to go through Yehuling.

The Battle of Yehu Ridge took place in August of 1211 (the third year of Jin Da'an and the sixth year of Genghis Khan, Mongolia). In Yehu Ridge, a decisive battle that determined the fate of Mongolia and the Jin Dynasty. In this battle, Genghis Khan commanded a hundred thousand troops to concentrate on attacking the 100,000 troops of the 450,000 Jin army. The Mongolian army won a great victory and the Jin Kingdom almost lost all its elite forces.

On June 24, 323, General Li Yun led four battalions across the Yinshan Mountain Road and arrived at Yehu Ridge. At this time, the Song army had already built three forts on the Baili Mountain Road, and it was not as troublesome as expected. However, when traveling, the troops were all in summer clothes and marched in Yinshan Mountain, and everyone felt a little cold. When they arrived at the Yehu Ridge, the chief of staff sighed: "This is called Yinshan, is it because of the coldness?"

Li Yun couldn't answer such a question. People like to use Chinese words more festively, and the word "yin" gives people a feeling of unfriendliness. The only verse that can make soldiers feel energetic is probably "But let the flying generals in Longcheng be there, and the Hu horses will not be able to cross Yinshan."

"You must bring more clothes next time." Li Yun expressed his opinion, and then looked up at the famous Yehu Ridge. In the places where Li Yun had seen, Yehu Ridge had nothing special in addition to giving people a strong coolness in midsummer. It is not particularly suitable for ambushing, nor is it particularly suitable for formation combat.

After watching for a while, Li Yun asked the Chief of Staff, "If you were asked to fight here, how many troops would you put into?"

The Chief of Staff was also looking at the terrain. After hearing this question, he replied: "If it were me, I would build a camp here. Putting two or three thousand people is the limit. I don't understand why the Jin Kingdom had to put 100,000 troops here."

Li Yun sighed: "In the war history class, the Jin Kingdom wanted to do a one-time business. I used to think that the Jin Kingdom's idea was nonsense, but now I understand their ideas a little. Maintaining a hundred thousand troops here may be eaten up first. If we did not steam car and ship to transport food, we would have to station 40,000 troops in Youzhou, and we could only survive by relying on military garrisons. Not to mention mobilizing food from Youzhou to support Wucheng."

The Chief of Staff is very familiar with logistics, and any combat plan must include logistics. This time, the army can reach Wucheng, which is four hundred miles away, rely on a large amount of food in Youzhou City. Even so, the troops are only planning to leave a division's strength in Wucheng. Even a division has already discussed a lot, and they feel that the logistics burden is very heavy. The division itself has to bear part of the production.

Therefore, the Chief of Staff also sighed: "Cars, horses, and pedestrians, bows and arrows are all on their waists. My wife walked to see each other, but the dust was gone. She held her clothes and stamped her feet and stopped her from crying, and her crying sounded straight up to the sky. She thought it was very majestic to guard the border, but now she knows what the soldiers and chariots wrote is true. It is really sighing to prepare for war with the barbarians at such a place."

The Song army is a very normal army. A normal army naturally has normal reactions. After seeing the difficult environment, they will question the border guards. After experiencing a fierce war, they will long for peace. Li Yun naturally will not accuse the Chief of Staff of disrupting the morale of the army. No one is a fool, and they will naturally have ideas after seeing the situation of Yinshan. He smiled and said, "Then let's continue to go north and take a look at the north of Yinshan as soon as possible."

Rest a night near Yehu Ridge, the next day the troops continued to head north. After passing through the last few mountain passes, the scenery in front of them suddenly changed. To the north of the Yinshan Mountains, there was a vast flat grassland. After walking through the mountains for a long time, the soldiers facing the grassland couldn't help but smile.

Li Yun couldn't help but smile, and the Arabian horse under his crotch couldn't help but dig the ground with his front hooves, as if he wanted to run on the land. The Chief of Staff sighed, "No wonder! No wonder! No wonder our Han army will fight to the north of Yinshan Mountain as long as we have the opportunity. As long as we can, who will let go of such a place!"

"Okay, let's go to this place within our ability!" Li Yun said loudly. He no longer wanted to maintain the style of a commander at this time. He came here in person to see what the land that must be taken down in the future looks like and how can he stand up.

The troops then advanced, and Li Yun led the cavalry forward. An hour later, the sound of horse hooves was no longer the collision between the iron and the stone mountain road, but the sound of stepping on the thick land. However, at this moment, some riders were seen in the distance, and their outfits were not like Han people at all.

Seeing the actions of thousands of cavalrymen, the cavalry looked from afar. Li Yun waved his hand and a team of cavalrymen using Type 22 rifles headed towards the cavalrymen, and some cavalrymen immediately urged the horse to leave. There were also a few who were obviously very skilled and brave. After seeing the Song army, they did not leave, but instead let the Song army reach about a hundred meters.

The cavalry held the horses, picked up the rifles and aimed them. One of them volleyed the guns, and the cavalrymen were knocked off the horse. The horses were frightened and ran away after hearing the gunshots. The cavalry of the Song Dynasty quickly brought back the guys who were knocked down. There were four of them in total, two of them were shot dead, one seriously injured and the other slightly injured.

Li Yun asked, "Can you understand Chinese?"

The slightly injured guy was murmured and Li Yun couldn't understand a word. Since that was the case, Li Yun didn't talk nonsense and told his subordinates that he was "dead". Li Yun urged the horses to start galloping on the edge of the grassland.

History class said that in the fourth year of Zhenguan, the area north of Yehuling belonged to the Tang Dynasty. About fifty years later, this place fell into the hands of the Khitan, which was six hundred years since now. For six hundred years, the Han cavalry has galloped here again.

The crisp gunfire sounded, and it was probably because of his subordinates who were executing the two alien races who didn't know what language they were in. Li Yun continued to move forward without looking back. The Arabian horse hadn't seen the plain for a long time, and he could finally run to the fullest. Its four hooves were spreading, running on the grassland like a pop.

Half a month after General Li Yun ran his horse on the edge of the grassland, Hao Renwanhu, who led his troops north, received news that the Song army had arrived at the edge of the grassland.

Hao Renwanhu had expected this. He knew that the Song Dynasty would never be satisfied with regaining Hebei and Youzhou, and it would only take sooner or later to continue northward. But when this day really came, Hao Renwanhu was still extremely sad. For hundreds of years, the northern forces have been overwhelming the Han forces in the south. After hundreds of years, the situation has finally been completely reversed.

At this time, Hao Renwanhu remembered a Hun folk song from a thousand years ago.

Losing my Qilian Mountains will prevent my animals from surviving.

Lost my Yanzhi Mountain, leaving my women without color.

The loss of my Yanzhi Mountain made my women colorless.

Losing my Qilian Mountains will prevent my animals from surviving.

The destruction of my Qilian Mountains made my livestock not live in prosperity.
Chapter completed!