The three days passed in a flash, and before he had time to enjoy the "happy" life after marriage, Li Shimin drove the ducks to the shelves and drove his son-in-law to the border between the north and Goguryeo. I don't know how much hatred this father-in-law has for his son-in-law, so he said that he would drive away.

When he went to the northern border, Chen Fei took Yin Ping, 20 of his subordinates, 30 court guards, and a total of more than 50 people set off together.

Because he was not asked to go into battle, he didn't have to bring too many guards, and after arriving at the border, Li Shimin would make arrangements, and someone else would be responsible for his safety.

As for Yan Yun'er, in the end, she couldn't convince Chen Fei and left her at home.

It's not that Chen Fei doesn't want to take her there, it's just that ...... He just got married to Linchuan, but when he went out, he took Yan Yun'er with him, what would Li Shimin think? Don't think about abolishing him, count Chen Fei losing. I just don't know if there will be any friction between the two women under the eaves.

Forget it, even if there is friction, it is not something he can control now, Chen Fei simply didn't think about these things, and went to the north with peace of mind.

And then there's the fighting on the northern border. The Tang Dynasty strongly intervened in the war between Goguryeo and Silla, so that the two warring sides had to cease fighting and fall into a standoff.

The Tang Dynasty entered the territory of Goguryeo strongly, with 20,000 troops living in the north and facing south, and the military camp set up a triangular garrison formation, which could be attacked and defended, which made Goguryeo uneasy.

What made the Goguryeo monarchs and ministers feel even worse was that their envoys ran into a wall in the Tang Dynasty, and the negotiations were fruitless, but they encountered a series of blank eyes, and the plan to peacefully negotiate with the Tang Dynasty to withdraw the troops was declared bankrupt, and seeing that the negotiations were hopeless, Goguryeo gradually lost patience.

Although the Tang Dynasty soldiers were strong and strong, and the two sides were not opponents of the same level in terms of national strength or military strength, the Tang Dynasty's long-term garrison of Goguryeo made the army and the people hate the same enemy, and they were unanimously dissatisfied with the Tang Dynasty, and the domestic resistance to the Tang Dynasty was increasingly rising.

Probably more than 20 years ago, the Sui Dynasty launched three large-scale battles against Goguryeo, which ended in the defeat of the Sui Dynasty, which gave the Goguryeo people great courage to think that they could not be afraid of the Tang army's offensive with the harsh weather and geographical environment.

So after a month of confrontation between the two sides, the envoys of Chang'an sent news that the negotiations were fruitless, and the king of Goguryeo finally couldn't bear it anymore and gathered his generals to discuss how to expel the Tang army.

In particular, the envoy in Chang'an came with follow-up news, saying that the Tang Dynasty was tired of using troops at this time, and the national strength was empty, which gave the king of Goguryeo a reassurance, and made up his mind to drive out the Tang army in the territory.

On the third day after the Goguryeo monarchs conspired, an army of 5,000 men tentatively launched an attack on the front army of the Tang Dynasty.

The Tang army did not receive the order to attack, and the main general did not dare to act rashly, but only organized the army to defend passively and maneuvered with the Goguryeo army with the help of fortresses.

Both sides only fought tentatively, and did not fight a real fire, and after the Tang troops from the other two garrisons arrived, the Goguryeo soldiers retreated.

The damage on both sides was no more than 100, it was only a skirmish, and the Tang army did not take it to heart.

But this tentative offensive was of great significance to the Goguryeo people.

First of all, they learned about the combat effectiveness of the Tang army from the front, the combat effectiveness of the other side is very strong, even if it is defensive, it is also well organized, the two sides are fighting, the casualty ratio is almost two to one, the Tang army has a great advantage, if the other side launches an attack, it is almost impossible to imagine.

Secondly, the Tang army really can't send troops at will, they all took the initiative to provoke, the Tang army can only defend passively, and there is no posture to attack at all, which is enough to confirm that the news sent back by the envoys is correct, the Tang army can only defend passively, and will not easily attack.

This gave the Goguryeo people hope of fighting back. Although the combat power of the two sides is not equal, they can give full play to their local advantages, use troops and other ways to make up for it!

So three days later, Goguryeo dispatched 40,000 troops and suddenly launched an attack on the three camps of the Tang army from the east, south, and west. and arranged troops to cut off the grain routes of the Tang army. Counting the days, the Tang Army is also approaching the day of replenishing grain and grass. In order to drive away the Tang army, Goguryeo also tried his best.

At first, the Tang army did not care about the attack of the Goguryeo army, but after a quarter of an hour of fighting, the generals who led the army suddenly realized that the other party was not joking, but playing with them seriously.

Unfortunately, the other two battalions also suffered the same situation, and they were too busy to take care of themselves, let alone send troops to rescue.

The Goguryeo army was also very cunning, they knew that frontal combat was not the opponent of the Tang army, so they tried to avoid head-on confrontation, but used long-range weapons such as bows and arrows, stone throwers and other long-range weapons to strike at the camp of the Tang Dynasty, consuming their troops, in order to play the role of subsequently exchanging the greatest victory at the minimum cost.

The boulders smashed the camp of the Tang army to pieces, the camp tent was destroyed, the wooden fence used for the defense outside was smashed through, the fortifications were almost destroyed, and the soldiers had no barrier to avoid the boulders, so they could only hug their heads and run around, praying that bad luck would not befall their heads.

What's even worse is that after two days of attack and defense, when the Tang army's will was almost worn out, another piece of news was like a thunderbolt from the sky, giving the Tang army a heavy blow.

That's it....... There is no food!

The ancients said that the soldiers and horses did not move, and the grain and grass went first. It is enough to see the important role played by grain and grass in a war.

Without food and grass, the soldiers will have to go hungry, and if they are hungry, the soldiers will have no morale, and if they have no morale, they will inevitably be cold in battle.

The 300 baggage troops of the Tang army escorting grain and grass were ambushed when they entered the border of Goguryeo, and all the grain and grass were cut off, so the grain and grass of the front-line troops were suddenly tight, and the remaining grain could only last for ten days at most.

Ten days later, the camp will fall into the crisis of running out of food, and outside the camp, there are tens of thousands of Goguryeo soldiers eyeing their camp, stone throwers, bows and arrows constantly shooting at their camp, and they will suffer heavy casualties. Therefore, whether to withdraw troops or continue to defend has become a difficult problem faced by the leading generals.

The withdrawal of the army can ensure that the casualties of the soldiers are minimized, but the imperial court will definitely not easily bypass itself, and it is light to lose the official hat, and if you don't do it well, you will be beheaded.

But if you don't withdraw your troops...... This battle can't be fought, the food and grass are gone, and the troops are insufficient, so what else is there to fight?

The generals of the Tang Army struggled for a day, and finally made a decision that surprised Goguryeo, they broke through! However, instead of breaking through and retreating, he led his troops to break through and rescue the other two camps that were encircled, and wanted to join forces and then make plans.

The Goguryeo generals did not notice the meaning of the other party for a while, but they were actually successfully broken through by the other side, regrouped their forces, and rushed to the camp in the east.......

(End of chapter)