The defeat of Xiuwu County meant that the Yan army's idea of blocking the Tang army in Hanoi County, or wanting to quickly recapture Hanoi County, was completely shattered. A small part of the defeated army fled to the north overnight, and Li Xin was already very tired because the army had been fighting for days and days, and had pursued for a long distance continuously. Therefore, I had to take a break in Xiuwu County for a while.

Of course, it was impossible for him to let the enemy relax. So, he scattered all the cavalry in his hand and went deep into the territory of Ji County to pursue the defeated soldiers of the Yan army who fled.

The territory of Ji County is a bit peculiar, because it starts from Xiuwu County and then goes all the way to the northeast, as if it were a straight line connected together.

This is because the place where Ji County is located is sandwiched by the Yellow River and the Taihang Mountains, and when the width in the middle is not enough, it is enough to set up a county. And this also makes it necessary to pass through Ki County if you go north from Hanoi County to Ye Thanh direction.

The southernmost county of Ji County is Xiuwu County, and then to the northeast is Huojia County, Ji County, and in the northwest of Ji County, close to the mountainous area, there is a common county. If you continue to the northeast from Ji County, you will arrive at Chaoge County.

The northernmost county of Ji County is far away from Chaoge County, located in the mountainous area of the remaining veins of Taihang Mountain, and is called Linshu County.

Among the six counties, Ji County is the seat of county governance, and these counties are basically not particularly far from the Yellow River, except for Lin Shu and Gong County. But one of the things that needs to be explained in particular is this Chaoge County.

Chaoge County is located in the south of Hebi City and east of Guling Mountain in later generations. This place has a long history, and it was the capital of the country at the time of the Yin Shang Dynasty. And this Guling Mountain is even more incredible, it has been a place of religious flourishing since ancient times, and it is said that this place was once a place for Nuwa to practice.

Of course, whether it is Yin Shang or blessed land, it is not of great significance to Li Xin. What really made him concerned was actually Qishui Pass, which is located in the north of Chaoge County.

There is a Qishui in Jijun, which was not conspicuous in later generations, but in ancient times, it was one of the tributaries of the Yellow River.

What I want to talk about here is the direction of the Yellow River.

But anyone who knows anything basically knows that the Yellow River in ancient times often flooded and diverted. In particular, there are several major diversions. The direction of the lower reaches of the Yellow River seen by later generations is actually far from that of the Wei and Jin dynasties.

At this time, the Yellow River was not much different from later generations in the Huaixian area. But more than 20 miles southeast of Huai County, it is different from the river in later generations.

In later generations, the course of the Yellow River flowed eastward in the north of Xingyang County. But at this time, it passed directly through the south of Huaixian, and then flowed all the way to the northeast, until the estuary was a distance of tens of miles, and then overlapped with the river of later generations.

Otherwise, according to the river course of later generations, Jijun could not be on the edge of the Yellow River, but Chenliu County should be on the side of the Yellow River. After all, Xiaohuang County, the county of Chenliu County, was not far east of Kaifeng City in later generations.

Due to the Jian'an period, Cao Cao made a weir in Qikou to stop the Qi water to flow to the northeast, and finally injected into Baigou, that is, the Wei River in later generations. Therefore, Qishui is not a tributary of the Yellow River.

But in any case, Jijun, which is already between the Taihang Mountain and the Yellow River, is relatively not wide, and if it is broken by this Qi water in the middle at this time, it will naturally block the way to go north and south.

And this Qi Shui Pass is built on this Qi Shui. It looked like a ship placed in the water in an east-west direction, and although it was not large, it just blocked the way. Such a place is easy to defend and difficult to attack, and it is necessary to hold the most important place.

Today's Yan army, after encountering a series of major defeats, basically retreated to this place.

The cavalry sent by Li Xin first chased after this place, and then could no longer pass, so they could only stay where they were, and then send someone to report to Li Xin.

At this time, several counties located south of Chaoge County, after hearing the news of the defeat of the Yan army, opened the city and surrendered one after another. Therefore, it also objectively accelerated the speed of the Tang Army's northward movement.

After Li Xin got the report, he marched north with his army and rushed to Chaoge County, south of Qishui Pass.

"Your Highness, the Yan army is guarding Qishui Pass, although there are not many soldiers and horses on the pass, only a few hundred, but in Guanbei, there are thousands of soldiers and horses. Moreover, once the time drags on for too long, Yecheng will inevitably send a large army to support, and we must take this place as soon as possible! "The cavalry generals who rushed here first came to report.

"In that case, don't delay, give the order to attack immediately!" Li Xin looked at Qishuiguan for a while and said lightly.

"Yes! The last will obey! Hearing the military order, the generals present stood solemnly.

Soon, the Tang army began to attack Qishui Pass.

However, since Qishui Pass is located in Qishui, there are rivers on both sides, and only a road in the middle that is not particularly wide can be attacked. Therefore, if you really attack, it will be quite difficult.

For this reason, the Tang army had to attack on the one hand, and on the other hand, prepare to erect pontoon bridges on the river on both sides, so as to bypass the city as much as possible.

However, the risk of doing so is not small, because the Yan army still has thousands of soldiers and horses on the opposite bank. If the other party launched an attack when crossing the river, it would be extremely dangerous for the Tang army.

When the battle at Qishui Pass was raging, Yecheng, which was about 150 miles away from Qishui Pass, finally got the news of Murong Wei's defeat at this time. The princes and ministers of the Yan Imperial Court, who originally had great expectations for him, immediately sighed with sorrow after hearing this, and the people were panicked.

"Dazai-sama, there is no other way but to personally lead the troops to resist the enemy. Otherwise, if Li Xin was allowed to cross the Qishui Pass, the Tang army would be able to go all the way north to the outside of Yecheng. The ministers came and went, and finally had to put their hopes on Murong Ke.

At this time, the Yan army finally discovered that the southern Tang army was led by Li Xin himself, and only then did he pay unprecedented attention to it.

After Murong Ke pondered for a while, he sighed and said, "You don't need to say more, this king is already ready. After explaining everything to His Majesty, this king will immediately lead his army south, and will definitely block Li Xin to the south of Qishui Pass, so that he will not threaten the safety of Yedu! The major affairs of the court depend on the princes! ”

"Dazai-sama don't worry, we will do our best to handle state affairs, Dazai-sama can go with confidence!" Feng Yi and the others hurriedly said.

At this time, there was no time to say anything more, Murong Ke hurriedly went to see the little emperor Murong Wei, and then he didn't even return home, so he went directly to the barracks. This time, he personally led an army of 50,000 to the south and rushed to Qishui Pass to rescue.

Thanks to Murong Jun's death, he mobilized a large number of troops from all over the city to the capital, and originally after he died, these troops would return to their respective places. Unfortunately, the Tang and Jin Dynasty jointly attacked Yan, so these armies were left around the capital.

Although it is said that many people fled because of the turmoil in the Yan Kingdom in the middle, the total army is still hundreds of thousands. Otherwise, in the face of the continuous attacks of the Tang army and the Jin army in the past two years, even Murong Ke would not be able to generate a lot of troops out of thin air to send them to various places.

But even so, after experiencing one defeat after another, the soldiers and horses left around Yedu are far less than before. This time alone, Murong Wei led 40,000 troops south, and Murong Ke brought another 50,000, adding up to nearly 100,000 people.

Fortunately, Murong Ke had previously managed the defense line against Tang and Jin, so there were originally a lot of soldiers and horses in many places. Otherwise, I really have to rely on the soldiers and horses of Yedu to support all places, but I am afraid that the daylily will be cold.

On the way south, Murong Ke sent people to gallop south, crossed the Yellow River, and then went to Chen to see Murong Chui. At this time, he had already realized that it would not be easy to retreat Li Xin by relying on his own soldiers and horses alone.

Therefore, in order to calm down the war in Hanoi and Ji County as soon as possible, he planned to let Murong Chui send some troops and horses to cross the Yellow River from the south and attack the Tang army. In this way, not only will the pressure on Qishui Pass be greatly reduced, but it may also take back Hanoi County in one fell swoop.

Of course, there is a premise here, that is, Qishui must be kept.

Otherwise, after Qishui Pass is occupied by the Tang army, it will become a difficult pass to block itself. At that time, even if he rushed outside Qishui Pass, he would probably not be able to get in touch with Murong Chui's troops and horses to deal with Li Xin's Tang army together.

It was precisely because he was afraid that Qi Shuiguan would not be able to support it, so Murong Ke was in a hurry all the way. However, with limited manpower and 50,000 troops to go on the expedition, it took a lot of preparation time.

So, when he walked halfway up, he got a frightening news, that is, Qishui Pass was taken by the Tang army.

"How is that possible? Although Qishui Pass is small, the terrain is dangerous and difficult to defend and difficult to attack, so it has only been less than two days, how could it be taken by the Tang Army? After hearing the news, Murong Ke felt a little incredulous, and asked the person who came to report the news.

"It's all to blame on that Lu Go! After he retreated from the south, he had been staying north of Qishui Pass. After the Tang army reached Qishui Pass, he volunteered, saying that he wanted to help guard the pass. Originally, our garrison was insufficient, and under the onslaught of the Tang army, it was the time when there were few people, so naturally we would not refuse. Who would have thought that when they took over the defense of Guancheng, they actually opened the door at night to surrender and let the Tang army go. The messenger was indignant.

Hearing this, Murong Ke's face turned pale, as if he wanted to scold, but in the end he didn't scold. But it can be seen that he probably hates Lu Hu deeply.