Yang Ming led people to attack all the way, but he didn't expect to be ambushed by the Chu army in his eagerness. Xunyang City, Chu Army Camp, Hengshan, and Beijing, these four Chu army teams all gathered together and ambushed between the Chu army camp and Xunyang City, giving a heavy blow to the Dafu army that was eager to pursue.

The balance of victory was suddenly reversed, and seeing that his soldiers suffered many casualties, Yang Ming finally calmed down and withdrew to Golan City with his soldiers.

And Yu Xian, who tasted the sweetness, did not let his soldiers take advantage of the victory to pursue. He quickly organized hundreds of thousands of Chu soldiers, looted the material of Xunyang City, and then withdrew to the territory of Chu through Xunyang Pass.

Originally, in this battle, in the course of nearly a month, the Chu army suffered many losses and lost many soldiers. But in the last battle, Yu Xian's stroke of genius, taking advantage of Yang Ming's eagerness to defeat the Chu army, came to an ambush, which suddenly made the number of soldiers in the two countries basically equal.

When Yang Ming, who finally came back to his senses, once again brought out the Dafu army to Xunyang City. Seeing this messy city, his face turned blue with anger, and he immediately ignored the dissuasion of the generals and launched an attack on Xunyang Pass.

Xunyang Pass, is the former Jin Dynasty Emperor Sima Nan, spent several years of effort, spent a lot of money to build a Xiongguan, it is a barrier for Dafu to resist the attack of Chu.

The walls here are all made of huge rocks found in the mountains, and they are very thick. Plus before and after Xunyang Pass. The road was not wide enough for many soldiers to carry out siege operations at the same time.

On the wall of Xunyang Pass, only five or six thousand Chu soldiers guarded it. Yang Ming led hundreds of thousands of Dafu soldiers under his command to attack the city wall in turn. It took a lot of effort and a lot of people died, but no one was able to attack the head of Xunyang Pass.

Yang Ming led his men and continued to attack at the pass for more than 20 days, and finally despaired, so he had to retreat to Xunyang City with his soldiers.

This Xunyang Pass was originally a barrier for Dafu to resist the attack of the Chu State, but now it has fallen into the hands of the Chu people. Because Dafu was very confident in Xunyang Pass, no important military fortress was built after Xunyang Pass.

That is to say, if the Chu army enters the territory of Dafu from Xunyang Pass, the defense capability of a large area behind this pass will not be able to resist the attack of the Chu army at all.

The current situation is very unfavorable to Dafu. There is no dangerous place to rely on, only heavy troops can be stationed here. Yang Ming's nearly 300,000 troops were stationed in Xunyang City and the nearby Golan City, as well as the two small cities of Hengshan and Jingcheng, and these 300,000 horses would consume a lot of grain and grass every day.

But if these 300,000 people are withdrawn, the Chu army is likely to cross the border again, and they may soon go deep into the hinterland of Dafu, which is a loss that Dafu can't afford!

When the military report reached Xijing City, Emperor Fu and his ministers looked at each other, but they didn't expect to be in such a situation now.

Now the Dafu army wanted to find the Chu army for a decisive battle, but they retreated behind Xunyang Pass, waiting for Dafu to relax their vigilance before making a surprise attack.

After discussing with the ministers, Emperor Fu decided to send some more siege equipment, so that Yang Ming in front would take this Xiongguan at all costs.

However, Yang Ming racked his brains and thought of many ways, but he still couldn't shake this pass. I had to suggest to the imperial court that after Xunyang Pass, build another pass to block the sudden attack of the Chu soldiers.

But how easy is it to suddenly build a strong fortress? First of all, it must be guaranteed by strong funds and sufficient materials, and even if all this can be satisfied. It would take years to build a strong pass.

During this time, Yang Yun also followed the Dafu army to launch several attacks on the high walls of Xunyang Pass, but this Xunyang Pass was impregnable. The Chu soldiers in the pass shrank in the pass and resolutely did not come out. As a result, Yang Yun's subordinates also lost a lot of manpower. There is no way to take this pass.

In his spare time, Yang Ming took Ju Yuanguang and Guo Long and others. In the mountains near this pass, I tried to find a shortcut to get to the pass. But they spend a lot of time and effort. But I couldn't find a solution.

The current situation made Yang Yun feel very aggrieved and unable to find the enemy. It can't be evacuated yet, and it will be spent all day on this pass, which is not a solution!

Time flies, and in the blink of an eye, it has been several months since Yang Yun arrived at the front-line barracks. However, there is no way to take this pass.

Just when everyone had nothing to do, the solution actually took the initiative to send it to the door.

Hengshan Castle is a small city only a few dozen kilometers away from Xunyang City. Yang Yun is now stationed in this city. Some time ago, Yang Ming arranged for Yang Yun to take 20,000 soldiers from his headquarters to take charge of the defense of this small city.

Due to the withdrawal of the Chu army from outside Xunyang Pass, there was not a single enemy in this area. Therefore, Yang Yun, who was in charge of the defense of this small city, had nothing to do all day.

On this day, a fast horse galloped like lightning. Running towards Yokoyama Castle. Immediately there was a one-armed man, who had obviously been on the road for a long time, and looked like a dusty man.

"Stop, what are you doing?" Guards outside the city stopped the one-armed man who had hurried in.

"I want to see His Royal Highness King Wu, and I have urgent information to present to him in person." The one-armed man put his arm around the reins of the horse, jumped off the horse, wiped the sweat from his head, and said eagerly.

This one-armed man was Yao Xia, and under the leadership of the guards, Yao Xia soon met Yang Yun. handed a letter to Yang Yun in person. Yang Yun opened the envelope and looked at it seriously.

"Great, great!" After reading the letter. Yang Yun couldn't help but slap the table and jumped up excitedly.

This letter was written to Yang Yun by Yao Xia's father, Yao Lao Duwei. The letter wrote that Sima Nan, the emperor of the Great Jin Dynasty, in order to avoid it, the Chu army attacked the people of Dazhi. Therefore, near Xunyang City, on the mountain road at the junction of Fu and Chu, this Xiongguan was built, which was later Xunyang Pass.

In that year, when the Xunyang Pass was built, Yao Laoduwei was the personal guard of the Jin Emperor Sima Nan, and was deeply trusted by the Jin Emperor, and he participated in the design and construction of the Xunyang Pass.

When the Xunyang Pass was about to be completed, Sima Nan, the Jin Emperor, considered that the pass might be occupied by the enemy, so he asked his officials to think of a way. Prevent this from happening.

Because Xunyang Pass is surrounded by cliffs, people cannot attack this pass from the surrounding mountains. The officials of the Jin State who were in charge of the construction, after receiving the order of the Jin Emperor Sima Nan, began to examine the terrain and design a reasonable plan.

These officials in charge of the construction racked their brains and dug a secret passage in a cave that could lead to the cliff not far above Xunyang Pass.

From this secret passage, you can reach the cliff above Xunyang Pass, and you can reach a hidden corner of Xunyang Pass by rappelling down.

And this matter, at that time, the Great Jin was highly secretive, and the soldiers who dug the passage of this cave did not know what they were digging a passage in this mountain for?

When the passage was about to be dug up, the officials in charge of the construction withdrew all the ordinary soldiers. Only a few people they trusted were left behind, and the last earth and rocks were opened to dig through the secret passage.

After all the secret passages were built, the people responsible for the construction of Xiongguan and the secret passages completely blocked the entrance to the cave. And they put soil on it, grass and trees, so that it was impossible to find the entrance to the secret passage.

Since Yao Lao Duwei was a very trusted guard of the Jin Emperor back then, he participated in the construction of this secret passage throughout the whole process, so he became one of the few people who knew this secret.

Decades have passed since this incident, and almost all of the people who knew about the construction of this secret passage have passed away. So Old Captain Yao became the last person to know this secret.

When it was learned that Dafu's army was blocked at this Xiongguan. Yao Lao Duwei didn't have a good impression of the Dafu Dynasty, so he didn't plan to tell the Dafu Imperial Court about it.

Later, I got the news that I heard that Yang Yun was also before Xunyang Pass, and he was trying to do everything possible to capture this pass. Yao Lao Duwei wrote this letter and drew the location of the cave entrance that was hidden back then on the map.

See this epistle. Yang Yun's excitement could not be suppressed, and he immediately sent someone to call Ju Yuanguang, Guo Long and others, and rode towards the mountain.

Although there is a map drawn by Wei Laodu, it has been decades since this matter, and it took Yang Yun and others a lot of effort to find the location drawn on the map.

What was originally a small tree marked on the map has now grown into a towering giant tree. After digging a short distance, they saw a huge stone slab underneath it, and asked their soldiers to move the stone slab away, and a hole appeared in front of everyone.

Since this cave has not been opened for many years. It's impermeable inside. So, as soon as they opened the slate, they could smell a strong musty smell.

Yang Yun has studied medicine for many years, and of course he knows that now is not the time to enter the cave. Waited patiently for a day or two. Seeing that the rotten mildew in the cave had almost dispersed, Yang Yun dared to lead people into the cave.

According to the instructions on the letter from Yao Laodu, everyone quickly found the entrance to the secret passage hidden in the cave. Remove the concealment at the entrance of the secret passage, and everyone slowly move along the secret passage. After about five or six hundred meters, I saw a stone blocking the way in front of me.

The stone was as tall as a man, and it took a lot of effort for the soldiers accompanying him to move the stone out of its original position. As soon as the stone was removed, a bright light came in from behind the stone.

When they reached the entrance of the cave and stuck their heads forward, the timid people could not help but be startled. Because the location of this cave entrance is right on the cliff. Through the entrance of the cave, Yang Yun and the others looked around. Sure enough, it was found that below the entrance of this cave, about seventy or eighty meters, was the top of the city wall of Xunyangguan.