The 20,000 army marched towards the outside of Changshan Pass under the order of Shao Zisong with incomparable fighting spirit and with the desire to avenge those comrades. From Changshan Pass all the way down to the south, the outside is facing Changshan County and Zhongshan Kingdom in Jizhou. Among them, Changshan County is in the west, and Zhongshan Province is in the east of Changshan County.

If these two counties are connected, they will be in the shape of a long strip running northeast and southwest. The southern foot of Taihang Mountain south of Changshan Pass, and the area of Jingcheng at the eastern foot of Taihang Mountain, are all within the scope of its defense and blockade.

This shows how important these two counties are.

Among the eight counties of Changshan County, the closest to Changshan Pass is Shangquyang County, and the northeast is Tang County and Wangdu County of Zhongshan Kingdom.

These three counties basically block the road from Changshan Pass to the south into the North China Plain, and if you want to go deep into the south of Jizhou and the hinterland of the Central Plains from Changshan Pass, you must first take these three counties.

It is precisely because of the importance of this place that Murong Chui placed 30,000 troops among the three county towns before, just 10,000 in one county town. They have formed a cooperative defense with each other, relying on each other for defense, and once one place is attacked, they can get support from the other two places.

In this way, it can also buy a lot of time for the rear troops to rush to support, so that they will not be broken through by the Tang army as soon as the battle starts.

The battle in the north had already begun, and the initial battle was unfavorable, which was a heavy blow to the Yan army on the entire defensive line. The only thing worth consoling seems to be that Murong Trai is blocking Liao Chuan in the north in the Zhuoxian area at the moment.

But what they were most worried about finally happened, after Shao Zisong came out, he quickly killed the city. After all, Changshanguan is only a few dozen miles away from these three counties, and it doesn't take much time.

According to the previous plan, in the face of the Tang army out of the pass, the Yan army had only two ways, either to hold on to the city and wait for reinforcements from the rear to arrive. Either go out of the city and fight a decisive battle with the Tang army and beat the Tang army back to the Guannei.

Under the circumstances at this time, it is obviously not a good thing to let the Yan army within the three counties of Shangquyang, Tang County and Wangdu County go out of the city to fight the Tang army.

After all, there were only 10,000 troops in each city, and even if they didn't defend the city at all, they all went out of the city to participate in the big battle, which was only half of the strength of the Tang army.

Not to mention that Shao Zisong still has 10,000 cavalry in his hands, which is a great threat to these Yan troops.

Unless the forces of their three counties can be concentrated together, so as to have an advantage in terms of troops. Otherwise, these generals would not dare to go out of the city to fight.

And Murong Chong, the king of Zhongshan in Lunu County, the capital of Zhongshan State, was just a six-year-old hairy boy at this time, and it was the officials and generals below who really made the decisions.

As soon as these people heard the news that Shao Zisong had left Changshan Pass, they immediately became anxious. After thinking about it, in addition to sending people to inform Murong Chui in the north and Yecheng in the south, he ordered all the soldiers and horses from Tang County and other places to concentrate in the north of Lunu County and the eastern part of Shangquyang County.

Because the county seat of Lunu is located dozens of miles southeast of Shangquyang County, if the Tang army moves south in a big way and is not hindered on the way, it can kill all the way outside the county seat of Lunu.

This is obviously unacceptable for the officials and generals in the city, especially with such an important figure as Murong Chong.

Therefore, the soldiers and horses were concentrated and deployed in the north of Shangquyang County and Lunu County, thus forming a barrier to block the Tang Army, which could greatly protect Lunu County.

Such an idea is generally not a problem.

But these people who gave orders seemed to ignore an important issue, that is, the three counties were not close to each other, and if they sent people to pass the order and then those soldiers and horses to act, Shao Zisong would have already killed outside the mountain.

Therefore, as soon as he heard that the Yan army was acting like this and the army was retreating south, Shao Zisong realized that the opportunity had come.

He divided his troops and horses into two parts, including 10,000 foot soldiers, led by Yao Chang and a few generals, and went separately to take Tang County and Wangdu, which were empty of troops, and other counties in Zhongshan Kingdom further east.

And he himself, with 10,000 cavalry, chased after the retreating Yan army in three ways.

The battle in Tang County and other places was relatively difficult, after all, it was a siege battle. But because the troops were all withdrawn, it was only a little difficult, and it was easily taken down in the end.

Shao Zisong's progress was even faster, after they caught up with the soldiers and horses of the Yan army retreating south, everyone seemed to be holding back a fire in their bellies, and galloped into the ranks of the Yan army.

This is simply like chopping melons and vegetables, except for a small part of the Yan cavalry who were able to escape, the remaining nearly 20,000 troops were killed and left without leaving a piece of armor. Shao Zisong led the people to chase all the way to the outside of Lunu County, and then stopped.

However, he did not withdraw his troops, but readjusted the deployment of the three-way troops.

Among them, 3,000 cavalry went to Shangquyang County, northwest of Lunu County, to contain the soldiers and horses there. He led 4,000 cavalry to wander around outside the county town of Lunu to deter the Yan army in the city.

As for the remaining 3,000 cavalry, they immediately turned around and headed north to join Yao Chang and them. After all, if they are just foot soldiers, it will be very inconvenient many times.

The Tang army moved south so quickly, which made the Yang Lu, who was heading north in the rear, very anxious, and after hearing the news, he had to urge the army to go north day and night. I hope to rush to the destination to rescue before the Tang army captures the county seat of Lunu.

Zhongshan Kingdom, like Changshan County, is a total of eight counties.

Among these eight counties, the northernmost is Beiping County, which is located at the foot of the eastern mountain of Langya Mountain, northeast of Tang County and Wangdu County. If you start from here and go northeast, you will reach the boundary between Fanyang County and Gu'an County in Fanyang Kingdom.

It just so happened that these two places were exactly where Peng Lin and Shi Yue were attacking.

Therefore, after Yao Chang took Tang County and Wangdu County, he immediately moved his army eastward and first took Puyin County, which was close at hand. After that, he marched north to attack Beiping County.

In this way, since the separation of Guangchang County, Peng Lin and Shao Zisong's soldiers and horses converged again. The fact that the two places are connected means that the progress of the war has been achieved without a small victory.

Peng Lin, who was attacking Gu'an County and Fanyang County in the north, heard that Yao Chang led his army north to attack Beiping County, so he sent Shi Yue to lead 3,000 cavalry south to support him. After the two armies converged, the Yan army in Beiping County could not hold it anymore, and it only lasted for half a day before it was captured.

At this time, the entire southern foot of Taihang Mountain, except for the area in the west of Changshan County near Wutai Mountain, and the first line of Zhuoxian County, where Murong Trai of Fanyang State had deployed heavy troops, was basically taken down by the Tang army.

In other words, the soldiers and horses sent by the Tang Army from the three routes of Flying Fox, Puyin and Jundu have basically completed the task of getting out of the customs and gained a firm foothold in the south of Taihang Mountain.

This is very beneficial to the overall battle situation and Li Xin's entire plan.

Murong Chui, who was originally playing against Liao Chuan in the Zhuoxian area, knew that his general trend had gone after he got the news. In the northern part of Youzhou and Jizhou, it is basically difficult for him to compete with the Tang Army, let alone block the Tang Army.

Although he was bent on fighting back, he was more than willing to fight back in this situation.

In Zhuoxian County, Murong Chui almost couldn't sleep all night, because he had received almost all the bad news these days, and the situation had developed so far, which made him very worried.

"We can't go on like this, or else this tens of thousands of troops will inevitably be wiped out here. Once these tens of thousands of troops are defeated by the Tang army, then all our troops in the north of Jizhou will be almost lost. At that time, all the northern counties of Jizhou will no longer have anyone to defend, and no one can stop the Tang army's southward movement! After thinking about it, Murong Trai felt that there was no point in staying here any longer.

"The king's intention is to withdraw his troops to the south?" The general beside him asked.

"Not bad! If we delay any longer, we will be at risk of being surrounded by the Tang army. Before, this king deployed a defensive line to block Liao Chuan's southward movement, and now it seems that Liao Chuan is also holding us back. If it weren't for the fear that he would lead the army south, this king wouldn't have to sit in Zhuoxian all the time, and he couldn't move when he saw the Tang army coming out from Changshan Pass and Wuruan Pass! Murong sighed.

When he succeeded before, he thought that his plan had come true, and Liao Chuan was blocked by himself to the north of the defensive line. At that time, I was still thinking about whether I would turn around again to solve the Tang army in Wuruan Pass and Changshan Pass.

But when the real thing came to the end, I found out that Liao Chuan did not start the siege as he thought, and immediately began to attack the city, and then hit a head in the siege battle. On the contrary, Liao Chuan, like himself, is immovable.

In this way, he wanted to leave but did not dare to go, because he was afraid that Liao Chuan would take the opportunity to attack south. If you don't leave, you will see the news of being captured by the Tang Army from other places.

Originally, he still had a certain amount of confidence in these soldiers and horses, and felt that if he relied on the city guards, it should not be a big problem. At the very least, it should be possible to delay for a while and let your side of the problem be resolved.

Who would have thought that the people behind would make all their stupid moves, and there was no determination to fight a decisive battle at all. The battle was lost again and again, and the whole situation was far beyond his control.

"The army led by Lord Sikong is rushing to support us, if we withdraw our troops, we still have to find a way to join them as soon as possible!" After thinking for a while, a general proposed.