With the gradual advance of the Eastern Expeditionary Army, Li Shimin's Eastern Expeditionary Army commander Bubu also moved forward with the main force.

For several months, the tactics adopted by the Goguryeo army were to hold the city and consume the living force of the Tang army. And the main task of the Tang Army is to attack the fortifications one by one.

There is no technical content in this battle, and there is no need for Li Shimin, the commander-in-chief, to spend any brains to plan. According to his own account, it was this battle that made him almost fall asleep.

Li Shimin basically has nothing to do every day except for occasionally listening to reports. Fortunately, there was a art troupe that came to condole, and Li Shimin was able to watch the performance to relieve his boredom.

On this day, he heard a report from the front that the main force of the Goguryeo people had finally come out and was going to fight the Tang army near Pyongyang.

Li Shimin was very excited, if this battle could solve the main force of the Goguryeo people, then the problem of Goguryeo could basically be solved.

For Li Shimin, who was born as a general, this was a grand banquet, and he could not be absent. So, Li Shimin personally came to the front line.

Equally excited, there was also the commander of Goguryeo, Izumi Gai Suwen.

The Tang army was well-equipped and well-trained, and the Goguryeo army and the Tang army suffered many losses in field battles. Therefore, the Goguryeo talents adopted the strategy of relying on strong cities to consume the Tang army.

Unexpectedly, the Tang army actually had such a siege weapon as artillery. The previously impregnable city wall has now become an ornament, and the city has become a living coffin, which was devoured by the Tang army one by one.

Seeing that the Tang army was approaching Pyongyang, the capital of Goguryeo, step by step. Quan Gai Suwen thought to himself that instead of being cut by the Tang army with such a stewed knife and consuming it little by little, it was better to concentrate all his strength on fighting to the death with the Tang army.

Quan Gaisu Wenming knew that it was not a big deal to defeat Tang Junye, but he came to fight to the death with a decisive mentality and a tragic feeling.

On the morning of April 17, in the wilderness of the Sunchon area, the main force of the Eastern Expeditionary Army and the main force of the Goguryeo Army appeared respectively.

The Goguryeo people mobilized, and all the forces they could mobilize, including the militia, totaled 340,000 people. The Tang army arrived on the battlefield with a total of six cavalry divisions, seven infantry divisions, plus the Flying Tiger Army and some other auxiliary units, a total of 250,000 men.

There are more than 10,000 people, and there are thousands of people. The armies of both sides exceeded 600,000 people, and there was no edge in sight.

As soon as the two armies faced each other, the Goguryeo people felt very depressed.

In ancient times, when two armies fought, they would generally line up from a stone's throw away. This so-called place of one arrow refers to the range of the bow and arrow. The troops of both sides were to be out of range of their bows and arrows.

The Goguryeo people were frustrated that the range of the Tang army's bows and longbows was at least 50 meters away from theirs. They had suffered this loss in the past when they were engaged in field battles with the Tang Army.

Therefore, the distance between the current and the Tang army's array must be at least 50 meters above the original range of bows and arrows.

In ancient times, the general form of warfare was that the generals of both sides fought each other alone, and then the two armies began to attack each other.

After the Tang Army carried out military reform, at the suggestion of Li Su, the Tang Army abolished the reckless and meaningless practice of fighting generals.

It takes a long time for an excellent general to grow. It takes countless battles and a lot of experience to gradually grow.

But in the process of fighting, if you encounter a second fool who only has martial arts and bravery, there is no point in killing the other party, but if you are killed by the other party, such a loss is too unworthy.

Just imagine, a division commander of the Tang Army went into battle to challenge, and the other party came out with a small soldier with strong martial arts. Does it make sense to fight like this?

The Tang Army's troops were strong in combat effectiveness, and a big reason was that the generals and troops of the army had lived together for a long time and had a tacit understanding with each other.

The Goguryeo army, on the other hand, also practiced the separation of generals in peacetime, and only appointed a general on the eve of the battle. As a result, the generals and troops are not familiar with each other, and it is unrealistic to expect them to be able to cooperate tacitly on the battlefield.

From this point of view, there is no need for the Tang army to fight.

The necessary situation on the battlefield still has to be gone. Li Shimin came to the front of the battle and met with Quan Gai Suwen. Li Shimin persuaded him to surrender, and Quangai Suwen asked Li Shimin to withdraw from the army. The two talked a few words, but they didn't speculate, and they went their separate ways.

The battle began.

In front of the Tang army's formation, there were 10 Franco-machine cannons, which opened fire first.

The Franc cannon fires solid iron eggs. The shells could not explode, but they had a range of up to 800 meters and were very effective against dense formations.

The iron egg is basically a flat shot, under the impetus of gunpowder, it flies into the opponent's military formation, falls to the ground, bounces and rolls on the ground, huge kinetic energy, can break the legs of many soldiers in a row, an iron egg rolls through, it is a bloody alley, and it is extremely powerful.

The Goguryeo people had suffered many losses before, and they finally came up with a way to deal with the iron eggs.

The Goguryeo people pushed out many wagons, which were filled with cloth bags and filled with dirt. They unloaded the horses, erected the wagons, and formed an earthen wall with sandbags, effectively blocking the attack of the iron eggs.

When the Goguryeo people saw that this method worked, they couldn't help but cheer.

Li Shimin was a little depressed when he saw that the artillery attack was ineffective.

Qin Huaidao raised the red flag in his hand and waved it a few times, and the artillerymen reloaded the shells, the muzzle of the guns was slightly raised, and they fired again.

The cannonball crossed the Goguryeo earthen wall and fell into their formation, and at such an angle, after landing, the rolling distance was much smaller, and it would not cause the impact of the iron egg, and the threat caused was much smaller. Relying on artillery shells to directly hit people and cause casualties is not very likely.

What the Goguryeo people did not expect was that after these shells hit the ground, they exploded.

"Boom, boom", with a loud bang, groups of soldiers fell. It turned out that it was a flowering bomb.

The Goguryeo people were dumbfounded, they didn't know that the Tang army still had such weapons. The Goguryeo officers and soldiers were terrified.

Quangai Suwen is going crazy.

He knew that there was only one way to face an enemy with long-range weapons, and that was to plant it and fight the enemy in close quarters.

So he urged the army to rush forward in unison.

At this time, the longbow troops of the Don Army began to exert their might.

"Woo woo", tens of thousands of longbowmen of the Tang army, ran and shot arrows, they gathered in the air, like a giant beast, roaring and pounced on the Goguryeo.

The arrows of the Longbow Province arrows are all three-edged and pointed, which can effectively penetrate the armor of the Goguryeo people. Large swaths of Goguryeo fell.

The longbow troops use a three-stage shooting method, and giant beasts constantly appear in the sky, and when they fall, it is a blank.

The Goguryeo people were very brave, their hearts were full of anger, and they didn't care about anything, so they thought of rushing forward and fighting the Tang army.