Because the terrain north of Yecheng is really not wide, it is not particularly difficult for Murong Ke to block the Tang army there. Anyway, he is just trying to buy time, so as long as he can't defend and doesn't fight hard with the Tang army, he can basically delay for a long time. And what Li Xin wants to solve now is this problem.

He couldn't fall into Murong Ke's design, and he blocked him to the north of Yecheng, so that the courtiers of Yan State could smoothly move to Guanggu.

"We can't stay here anymore, we have to change our minds. Before, I thought that Peng Lin would go south first, and then we would follow up. But now that Murong Ke has pressed his heavy troops to the north of Yecheng, relying on the surrounding cities to fortify layer by layer, trying to slow down the southward movement of our army, we must bypass this road! Tu Qi, tell me how Murong Ke's soldiers and horses are arranged now! After thinking for a while, Li Xin spoke.

"Yes!" Tu Qi hurriedly walked to the map, and then pointed to it and began to explain: "To the north of Yecheng, there are many places that are still under the control of the Yan army. The only counties that were really defeated by us were Guangzong County and its northern land, and then to the south of Guangping County, Guangping, Zhangzhang, Ping'en, Lieren, Feixiang and other counties, close to both sides of Zhangshui, were still in the hands of the Yan army. To the east of these counties are Qingquan, Guantao, Yuancheng and other counties in Yangping County, as well as the two cities of Wei County and Wei County in the middle! These cities have now been heavily defended by Murong Ke, and basically, these counties have formed three lines of defense together, thus blocking our southward movement. Now, General Peng's troops are blocked between Guangping and Qingquan County! ”

Wei County is the county where Yecheng is located, while to the northwest is Guangping County, and to the northeast is Yangping County! These three counties are located on the banks of the Zhangshui and Qinghe rivers, and Wei counties are in the middle.

If the cities of the three counties were connected by an east-west position, it was just a favorable arrangement to block the southward movement of the Tang army. As long as the Yan army defends properly, then the Tang army will not be allowed to march between the two rivers, and can only watch the Yan court withdraw.

In Guangping County, the 10,000 horses sent by Liu Xiaohai and Shao Zisong's troops in the north have not yet been able to take down the entire county. Therefore, the existence of this county, especially the county seat near Zhangshui, will become a great threat to Li Xin and Peng Lin after they go south.

After all, once Li Xin broke through to the vicinity of Yecheng in the south, it would be a very risky thing for those Yan troops located on the west bank of Zhangshui to suddenly cross Zhangshui and kill behind him.

"There are a lot of obstacles ahead! It is said that Murong Ke concentrated most of the troops in his hands now on these three lines of defense, and basically the generals and soldiers who fled back from the north before were all placed in this place by him. On each line of defense, there are probably tens of thousands of troops guarding it! In addition, he still has a lot of soldiers and horses in his hands who were originally guarding Yecheng, but with the development of the relocation of the capital, these soldiers and horses will inevitably no longer need to be arranged around Yecheng, and they should be able to be mobilized to fight! After a pause, Tu Qi continued.

"Let's talk about it! How to attack to get the most results! Only then can we destroy the Yan Kingdom as quickly and safely as possible! After the introduction, Li Xin asked the generals.

Everyone immediately whispered, and after waiting for a while, Deng Qiang spoke first: "Your Highness, judging from this situation, it is impossible for us to achieve the goal of quickly marching south from here. Therefore, it may be necessary to find a way to bypass other places, such as crossing the Qing River, and then quickly march south to the border east of Wei County. In this way, not only would they be able to bypass the three lines of defense set up by Murong Ke, but they would also be able to block the road of Yan Guo's relocation of the capital, making it impossible for them to leave Wei County! ”

"Exactly! We are now fully equipped with soldiers and horses, and all the soldiers have war horses on their sides, as long as we can cross the Qing River, with our speed, we will definitely be able to quickly rush to the east of Wei County! Hong Yi echoed.

Everyone's views are relatively unanimous, mainly because the situation is very clear at this time. There is Liu Xiaohai on the west side, and they don't have to worry about it. And Peng Lin is in the south, and if you can't get through, you can only go to the east.

"It's really a good idea to cross the Qing River and go south. But with Murong Ke's wisdom, he must have been able to anticipate this. However, this is also a good thing, the only thing that the entire Yan Kingdom can make this king pay attention to is this Murong Ke. As long as he is solved, even if Yan Guo's relocation of the capital is successful, it will not be a big deal! Li Xin thought for a moment and said slowly.

In the war to destroy the Yan State, the biggest obstacle is not that the territory of the Yan State is too large and there are too many troops. It mainly lies in the two people, one is Murong Ke, and the other is Murong Chui.

These two people can be said to be the pillars of the entire Yan Kingdom, if one is inside and the other is outside, if they cooperate well, they will definitely play a super role.

And now, Murong Chui is in the past, and only one Murong Ke is left. Murong Ke's military talent is certainly good, but Li Xin is not afraid of him. What he was really worried about was Murong Ke's talent in political affairs.

Suppose Murong Ke successfully moved the capital to Guanggu this time, and he himself followed. Then, after he experienced such a process of destroying the country, he must have learned from the pain and tried his best to strengthen the Yan Kingdom.

With the land of Qingzhou and his iron-fisted implementation of the new reform policy, maybe Yan Guo may really become strong again. Of course, even if he is strong, it is unlikely that he will expand north, but it is highly likely.

After all, Jiang Zuo's side is really not a competitive thing. And once the remnant Yan occupies the land of Jianghuai, this strength will inevitably be even stronger. At that time, if you want to really destroy Yan Guo, you don't know when you have to wait!

The reason why the Yan Kingdom in history was destroyed so quickly by the former Qin was actually related to Murong Ke's death. If it weren't for the fact that Murong Ke died a little earlier, I'm afraid it wouldn't be an easy thing for Qianqin to destroy Qianyan.

Then, if the former Qin wanted to unify the north, it might have to be postponed for a long time.

"If you go south, Yangping County will definitely be the place where the Yan Imperial Court must evacuate. Because after crossing the big river from here, they will arrive at the land of Jibei County, as long as they get here, they can go all the way east along the big river to Guanggu! Therefore, if we arrive at Yangping County first, no matter whether Murong Ke is there ready to fight us or not, it will inevitably affect his retreat! Qiu Xianyan said.

To the east of Wei County is the place where the Yellow River flows, and between it and the Yellow River, there are two places: Yangping County and Dunqiu County. In any case, if Murong Wei and those people wanted to leave Yecheng and cross the river to the boundary of Qingzhou, they would inevitably have to pass through one of these two counties.

However, after crossing the river, they first entered the boundary of Yanzhou, and it was not until they crossed Jibei County and then entered the territory of Jinan that they officially entered the boundary of Qingzhou.

But whether it is Jibei County or Jinan County, it is already on the south bank of the Yellow River, and it is relatively far away from various battlefields.

In other words, if they are allowed to cross the river, it means that they have become safe, and the Tang army will have no way to deal with them in a short time.

"Well, as you say, let's cross the river and head south immediately! However, after crossing the river, he entered the territory of Qinghe Country, and now Liao Chuan is still in the county of Bohai Country, and all the counties east of Qinghe are enemy territory. When we act like this, we are really going deep behind enemy lines, so we must be careful to prepare. Order the army to prepare five days' worth of dry rations, and after feeding the horses, set out immediately! After thinking about it for a while, Li Xin agreed with everyone's proposal and said.

"Yes, the last general and others will go down and arrange it immediately!" Deng Qiang and other generals hurriedly responded.

That night, Li Xin sent people south to inform Peng Lin and Shao Zisong, as well as Liu Xiaohai in the west, and Liao Chuan, who was far away in the Bohai Sea, so that they could know their next plan of action.

Thus, let them respond to themselves from all directions, so that the Yan army everywhere could not thwart their plans to go south.

Because the Yan army deployed soldiers and horses in the west of the Qinghe country, that is, the east bank of the Qinghe River, to resist the eastward advance of the Tang army. Therefore, Li Xin led the Bupo Army and the Flying Dragon Cavalry to return north for about 100 miles that night, and first arrived in Changle County, and then turned to the east and crossed the Qinghe River from there.

Because that place does not belong to the boundary of Qinghe Country, and it happens to be at the junction of Qinghe Country, Pingyuan Country and Changle County, the army is relatively weak.

Especially under the tense situation of the war in the north, the Yan army in this place is basically in a state of panic.

Therefore, the battle to cross the river was fought quite smoothly, and it took almost no effort to cross the river with all the troops.

After crossing the river, Li Xin swept away the remnants of the surrounding army, and then immediately ordered the army to rush south along the east bank of the Qing River.

If you go south from the east of Changle County to the east of Yecheng, it is about two or three hundred miles away, which is not much distance for the Tang army, which is all on horseback. Especially in the case of one person and two horses, the physical strength of the war horse can be used and rested to the maximum.

Therefore, in the afternoon of the next day, Li Xin had already led an army of 20,000 to appear outside Yuancheng County in Yangping County.

The reason why it took a night and nearly a day was because on the way south, they connected several Yan army camps stationed along the river along the way.

They were originally to defend against the Tang army from the west, but what they didn't expect was that Li Xin gave a curve attack and killed them from the north.

As a result, they were directly killed without leaving a piece of armor in a completely defenseless situation.