For Chen Xian, the expansion potential of the southeastern and eastern routes is not large, otherwise it will cause a full-scale war with the Jin and Song states, which is not what Chen Xian wants to see.

The expansion of the northern route and the expansion of the coastline are difficult.

At present, Chen Xian's coastline plan is still limited to the southern part of Laizhou Bay and Bohai Bay, and can only be smoothly implemented under the land response of the army of the northern front.

The same is true for the advance of the northern front, which is still in Shandong and has not yet touched the fundamental interests of the Hebei warlords, and with the advance of the battle line to the north, the Hebei warlords will also resist desperately in order to survive, and Mu Huali will not sit idly by. When the time comes, expansion in this direction is likely to bring not profits, but losses.

……

At present, in addition to expanding deep into the surrounding areas of Shandong and the Liaodong Peninsula, Chen Xian also has another choice, which is to land on the Liaohe Plain.

Although the Liaohe Plain is vast, firstly, at present, Yeluliuge, who occupies the Liaohe Plain, is Chen Xian's largest horse supplier at present, once he enters the Liaohe Plain and tears his face with Yeluliuge, on the one hand, he will lose a stable supply of horses.

Moreover, the Mongols will not let him occupy this territory, and when the time comes, the Mongols, Yeluliuge, and Wanyan Pingtao will definitely unite against him, and what awaits him will be a series of battles.

The more important problem is that although the Liaohe Plain is a treasure, this treasure is the same as the Liaodong Peninsula, and it is still only a mine, even if he gets this land, he will not be able to make a profit immediately, and it will take a long time to develop and invest a lot of manpower and material resources to open this treasure, which is obviously far from quenching his thirst.

What Chen Xian needs at present is war dividends, he needs to feed the war with war, and he needs a piece of well-stocked land to plunder!

In the end, Chen Xian moved his eyes to the east, the Goryeo Peninsula!

During this period, although the Goryeo Peninsula was in turmoil from time to time, it was generally peaceful, with a population of about five or six million and nearly 20 million acres of arable land on the entire peninsula!

If the entire peninsula is annexed according to Chen Xian's current policy of plunder, he will eventually be able to control at least 4 million people, nearly 20 million mu of arable land, and a large amount of wealth and grain reserves.

Originally, Chen Xian was worried that when he invaded a country that did not speak the language, he might be met with spontaneous and desperate resistance from the local people, but in the past year, the infiltration of the northwest border of Goryeo has dispelled this concern.

In this era, it is not that there is no national and national consciousness, but most of this consciousness exists only in the minds of the upper classes, and for the illiterate untouchables and slaves of North Korea, the state is only a tool for oppressing them, and the national consciousness is extremely weak.

In this era, it is much easier to occupy and rule a place than in the future, as long as you can clean the superstructure that has the national consciousness of the country, then the country and the nation will be easily digested.

To completely occupy the Goryeo Peninsula and turn it into his war dividend, he only needed to cleanse the country's superstructure, as he had always done in Shandong.

Since he did this kind of thing in Shandong, and did it to the Han and Jurchen landlords, there was nothing he could not do to the civil and military nobles of Goryeo.

Today, Chen Xian does not have much psychological resistance to this kind of purge, which can bring great benefits.

Determined to do so, Chen Xian once again activated his war machine.

Soon, warships and merchant ships from Shandong, loaded with soldiers, gathered in Suzhou Harbor.

Chen Xian personally sat in Suzhou and ordered people to select Goryeo people who had received ideological reform education and knew simple Chinese from Supo Road, Linzhou and Longzhou in Goryeo and sent them to Suzhou for short-term training.

After more than three months of preparation, warships and leased merchant ships, a total of more than 300 large and small ships, carrying 70,000 or 80,000 soldiers and construction workers, left the port of Suzhou and sailed along the eastern coastline of the Liaodong Peninsula in the direction of Goryeo.

After entering the territory of Goryeo, the fleet divided into several groups and swooped down on several seaports northwest of Goryeo.

The ship's infantry quickly captured several barely defended harbors, which were local commercial and fish ports with large populations.

The soldiers who occupied the port, according to the plan and under the leadership of intelligence officers, quickly cleared the port of two classes of nobles and merchants attached to them, confiscated their mansions, shops, warehouses, merchant ships.

Later, with the cooperation of the Goryeo who accompanied the ship, the soldiers began to requisition local civilians and slaves half-forced, half-hired to build improvised forts, forts, and infantry defenses behind the port under the command and leadership of the ship's construction workers.

The flotilla that had unloaded the supplies, requisitioned the fishermen and sailors in the harbor, and soon returned home, and soon after, they brought in new supplies......

At the same time as the port landing, on land, Chen Xian's army also advanced from the Yongju area, which had already been infiltrated, towards the interior of Goryeo.

Although there was no strong enemy in Goryeo, in order to prevent the Goryeo people from counterattacking and destroying, Chen Xian still adopted the strategy of concentrating the population and building a simple castle city in the vast rural areas.

In the Goryeo region, Chen Xian pursued a more brutal purge policy than in Shandong, and in order to minimize the resistance of the local ethnic groups in Goryeo, Chen Xian carried out a policy of complete purge of the two classes of Goryeo nobles, leaving only the people at the bottom.

If these low-level people want to get national treatment, they must study or let their children learn the textbooks given by Chen Xian and obtain a basic diploma.

Only by obtaining a basic diploma can the locals gain the right to join the army, to serve in the army, to hold public office, to gain the right to vote.

In his opinion, these illiterate low-level people, whether Han or Korean, are a blank sheet of paper, and they all have a lot to do, and once they complete their ideological transformation, they can become his potential.

This time, in the face of a full-scale invasion, Cui Xianzhong could no longer care about his private troops, he gathered tens of thousands of troops in the capital and rushed towards the southernmost stronghold of the invaders, a port located on the bank of the Datong River.

Cui Xianzhong's private soldiers are indeed much stronger than the Goryeo National Army.

The Goryeo army was dominated by foot soldiers, supplemented by cavalry, the most distinctive of which were the Goryeo infantry archers, who not only had accurate archery skills, but also used hard bows of more than eight buckets.

When the Goryeo army was fighting, they liked to use long cards and pikemen to cover the archers and get close to the enemy to shoot.

It's a pity that such tactics, in the face of flintlock pistols, have no advantage.

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