Next, the six counties mobilized the people to build bridges and pave roads, and transport grain and grass. Although the whole territory is mobilized, fortunately, the Jiedu embassy does not disturb the people, and the people are not recruited to serve for free, and they do not go out of the county, whether it is to build roads or transport grain, they are their own relays, and the Jiedu embassy will also pull out money and grain for wages.

Although this move made the Shuai Mansion contribute a lot of money, it was well received by the people.

The people are very energetic, and the roads in the counties are connected one after another, and then the grain and grass in the counties are transported along the main road to the transshipment warehouse city by the Liao River, and then the grain ships are converted to water transportation, which greatly saves manpower and time.

Luo Cheng established a new military town on the plain by the Liao River, fifty miles west of Jinshan City, called Tieling Military Town, and asked the Second Army of Xincheng to station an infantry box of 4,000 men and horses.

Previously, the Zhongwu Army was in the north of the Buyeo River, and the largest military fortress was Jinshan Castle. Jinshan City was built on the mountain side of the Liao River, a tributary of the Liao River in the mountainous area east of Tieling, occupying the mountain and choking the river, controlling the passage of this river valley, which is very dangerous.

However, this city is not too big because it is a mountain city, and the second army of Xincheng was stationed in Jincheng Mountain City, which is a military town second only to Xincheng in the second military defense area.

And now, Luo Cheng attacked the Fuyu River and began to build a larger plain city on the Liaohe Plain in the west, which was not only a military town, but also a large warehouse for grain and grass transfer.

This new Tieling military town, twenty miles away from the Liao River, is also located on the north bank of the Pan River, and there is also a large lake here, and there are several tributaries to the north, which can be described as a water network.

In order to guard this outpost, Luo Cheng built Zhenbei Fort at the confluence of the Liao River and the tributary Chai River, twenty miles north of Tieling Military Town.

At the foot of Datai Mountain on the west bank of the Liao River, twenty miles west of Zhenbei Fort, Zhenxi Fort was built.

In the valley on the side of the Chai River, a tributary of the Liao River, twenty miles east of Zhenbei Fort, the Chai River Fort was built.

Twenty miles north of Zhenbei Fort, at the confluence of the Liao River and the tributary Shahe River, a flat top fort was built in the narrow valley between the two mountains, and in the valley of the tributary of the Shahe River further north, the north waist fort was built.

Jinshan Military Town, Tieling Military Town, the two military towns are equipped with five fortresses: Zhenbei Fort, Zhenxi Fort, Chaihe Fort, Pingding Fort and North Waist Fort.

The two military towns and five army forts are fully stationed here.

Relying on the important waterway of the Liao River, the construction speed of the military town fort is very fast, with rammed earth as the wall and water diversion as the hao. Timber is cut from the mountains, transported to the river, tied into wooden rafts, and carried down the river directly to the castle.

The northernmost north waist fort is only 20 miles away from the southernmost mountain city of Buyeo River, Xilongwan Mountain City.

When the Zhongwu army built a city here, it directly sent a cavalry box to cross the Qinghe River north of the Beiyu Fort and set camp on the north bank of the Qinghe River.

The soldiers and horses of the Yuan clan in the mountain city of Xilongwan were only a few hundred people, and they were so frightened that they did not even dare to come out of the mountain city, and drove all the people and livestock into the city.

The city lord of Buyeo City was the Yuan who had been captured under Luo Cheng, and when he heard that Luo Cheng had sent troops north, he was building a city and soldiers coming to the city, and his face was frightened.

So on the one hand, dozens of horsemen were sent to the domestic city to ask for help, and on the other hand, 2,000 men and horses were sent to the mountain city of Xilongwan and the mountain city of Donglongtan, and at the same time, they sent envoys to inquire why they sent troops to the north and built a military fortress in the territory of Fuyu City.

Faced with Yuan Jiantu's questioning, Zhao Gui, the envoy of the Second Army who was personally stationed in Tieling Military Town, only sneered a few times and sent the envoy away.

In this way, Yuan Jiantu became more and more convinced that the Sui army was going to send troops to invade, so he constantly sent people to ask his father in the city for help.

But when Yuan Taizuo sent someone to Liaodong City to send Luo Cheng a lot of beauties, horses, gold and silver and other gifts, and wanted to negotiate, Luo Cheng promised to withdraw Zhao Gui on the surface.

But Zhao Gui withdrew the soldiers of the Second Army stationed in Tieling Town, but before the Yuan clan was happy for two days, the First Army envoy Li Jing took more soldiers and horses to enter and defend Tieling Town and the five forts below.

However, after Zhao Gui withdrew from Tieling, he sent two soldiers and horses to cross the previously agreed boundary line along the Xiaoliao River valley in the new city, advanced a hundred miles, and began to build a castle there.

Immediately afterwards, the Yuan clan received a report that in the direction of Liaodong City, there were also 10,000 Sui troops along the Daliangshui River Valley to the east, crossing the defense line for hundreds of miles, building a castle in the mountainous area of the critical river valley, and stationing troops and horses.

Then, Luo Cunxiao of Lushun led his troops out of Lushun and advanced along the coastline, and there were sailors accompanying him at sea, and they advanced directly to the vicinity of Shicheng, and they were also building roads and building cities to garrison troops.

For a time, the loyal soldiers went out in four ways.

Li Jingtun soldiers Tieling, soldiers pointed directly at Fuchuan City.

And Zhao Guitun's soldiers in the Xiaoliao River Valley, the sword pointed at the wooden bottom city.

Feng Xiaoci stationed troops in the Liangshui River Valley, and the soldiers pointed directly at Cangyan and the domestic city.

Luo Cunxiao advanced by land and water, forced Shicheng, and threatened the mouth of the Yalu River.

The loyal army of four lines of soldiers and horses, each with 10,000 people, was about 20 miles below the border mountain city of the Goguryeo people, and built troops in dangerous places.

In the domestic city, Yuan Taizuo couldn't help frowning.

The long-feared thing is still going to happen, and I have been forbearing, but the Sui army still sent troops to attack after all.

"My son Gai Suwen is still in the Central Plains, but the Sui people have sent a large army, what will happen to me?"

Yuan Taizuo asked his minister.

"When the Sui army is not firmly established and the castle is not completed, send troops to attack and destroy. Otherwise, once they fix the castle, then we are in danger. ”

In the past, Goguryeo was able to withstand the attacks of the previous dynasties of the Central Plains, relying on these mountain fortresses, relying on the hard delay of time, and the logistics and supplies of the opponent could not be connected, so that the other side had to withdraw its troops by itself, and they could even launch a counterattack when the other side retreated.

Indisputable for the moment.

But now Luo Cheng has been stationed in Liaodong for three years, and the soldiers are full of food, and he has adapted to the climate here and is familiar with the terrain here.

Now they are still coming to the same fortress advance tactics as them, which is a real attack, retreat and defense.

"King, now the Sui people have not really sent troops, if we send troops to attack first, this is to give him a handle, when the Sui people come to attack in all directions, my Korea will die." A minister reminded Yuan Taizuo.

You can't attack, but you can't defend it.

The Sui army went out in four ways, and who knows which way they will attack at that time?

It is impossible for them to deploy their soldiers and horses on all sides, that is impossible, the soldiers and horses cannot be concentrated, and they may be separated from each other.

Yuan Taizuo still has 100,000 soldiers and horses in his hands, and he can still mobilize another 100,000 young and strong soldiers, but this is already the limit.

And what Yuan Taizuo is most afraid of is that Luo Cheng is advancing step by step, building a city and garrisoning troops, constantly advancing, a sword is hanging but not sending, that is the most terrible, at that time, he has to be deployed on all sides, waiting for troops all the time, herdsmen can't herd cattle and sheep, farmers can't plow the fields, Luo Cheng only needs to boil him like this for two or three years, his North Korea will have to collapse.

After hesitating for a long time, Yuan Taizuo could only unwillingly send troops to the four roads of Fuyu, Mudi, Cangyan, and Shicheng, and each road sent an additional 10,000 defenders.

At the same time, an emergency mobilization of the whole country began in preparation for a full-scale invasion by the Loyal Army.

The transfer of the Goguryeo people soon reached Luo Cheng through the spy scouts.

"Yuan Taizuo is really greedy, and he actually wants to protect all four ways, so in this way, we will be relaxed next."

Luo Cheng sent troops this time, although he sent troops in four ways, but the real goal was only Fuyuchuan, and the other three roads were just bluffs and feints, in order to contain Goguryeo's soldiers and horses, and he didn't expect the effect to be so good.