Most of the mountain cities built by Goguryeo are built on the mountains, and the terrain is dangerous, easy to defend and difficult to attack.

After capturing Liaodong City, the defenders of the city were left behind, and they began to march into Baiyan City.

The news of the loss of Liaodong had already reached Baiyan City, and the city lord Sun Chuanyin knew that Baiyan City was going to end when he saw that the Tang army had arrived outside Baiyan City.

Liaodong City is so big, so strong, there are many soldiers, there is enough food and grass, and it has not been defended, and his own Baiyan City is far worse than Liaodong City, how can he hold it.

Looking at the soldiers on the head of Baiyan City, all of them were as earth-colored as they were, and they were related, Li Shimin learned in his heart that the soldiers defending Baiyan City did not have much determination to hold the city, so he gave a pair of Tang Army flags to Sun Daiyin, the city lord of Baiyan City, and said to him: "If you really want to surrender, raise it on top of the city tower." ”

Sun Chuanyin has already heard how Liaodong City was captured by the Tang army, and knows that the army of the Tang Dynasty has mastered a mysterious super weapon, and the people who died under what weapon died died very tragically.

However, Sun Chuanyin also knew that even if he had the heart to surrender to Datang, he couldn't do nothing, so he gave up Baiyan City to Datang.

If you really want to do this, don't say that you will be ridiculed, even if you look down on yourself, and those soldiers under your command will also be dissatisfied with yourself, the city lord.

Therefore, Sun Chuanyin knew in his heart that he couldn't hold it, but he still had to actively resist to the end.

After the Tang army began to attack the city, Ashina Simo led the Turkic soldiers and charged in front, and Sun Chuanyin ordered the archers to stop the Tang army from attacking the city. Ashina Simo was unfortunately shot by a crossbow arrow, and the Tang army immediately withdrew its troops.

Tang Taizong personally stepped forward to visit Ashina Simo, who was wounded by an arrow, and personally sucked the blood from the wound for him. When the soldiers heard it, there was no one who was not moved.

Goguryeo Ugguseong sent more than 10,000 troops to support Baekam Fortress. He led 800 cavalry to attack them. He Li personally entered the enemy's position, fell into the enemy's encirclement, and was stabbed in the waist. Xue Wanbei led another cavalry to rush in and rescue Qi He Li, who tore a piece of cloth from his clothes, tied up his wounds, and continued to fight.

The cavalry that followed him attacked vigorously, defeated the Goguryeo army, pursued for dozens of miles, and beheaded more than a thousand ranks, which stopped because the sun was setting and it was dark.

Sun Chuanyin had no intention of defending the city under the onslaught of the Tang army, especially the army of the Tang Dynasty, after using a super mysterious weapon, Sun Chuanyin immediately ordered people to raise the banner of the Tang Dynasty on the head of the city.

In this way, Li Shi's militia took Baiyan City bloodlessly.

Li Shimin gave great preferential treatment to Sun Chuanyin, the city lord of Baiyan City, who surrendered on his own initiative, and appointed Sun Chuanyin as the assassin of Baiyan Prefecture and continued to sit in Baiyan City.

After the Tang army captured Baiyan City, they returned to Liaodong City to rest. Li Shimin decreed that Baiyan City should be renamed Yanzhou, Gaimu City should be renamed Gaizhou, and Liaodong City should be renamed Liaozhou.

Li Shimin led the army from Baiyan City and advanced to Anshi City. After arriving in the north of Anshi, he immediately sent troops to attack the city.

The next day, Yuangai Suwen dispatched the northern part of Goguryeo, the sutra of the slave tribe to prolong his life, and the southern slave department of the mattress of the sa Gao Hyezhen, and commanded 150,000 people of Goguryeo and the Jin Ya, and rushed to rescue Anshi.

The situation at this time was actually extremely unfavorable to the Tang Army. The shortcomings of the Tang army's too small number in order to ensure logistics were exposed at this time.

Before attacking Anshi, the Tang army had already captured eight cities in Goguryeo, all of which needed to be defended by dividing their forces to prevent recurrence.

The total strength of the Tang Army is only 60,000 troops and 40,000 water troops, and the water and army have not converged at this time, Zhang Liang's water army is still on the way to attack Jian'an City at this time, and the troops around Li Shimin can only have 50,000 at most.

Part of it needs to maintain logistics and transportation, and part of it needs to continue to surround Anshi City to prevent the enemy from attacking inside and outside, so that there are only 30,000 troops left to meet the battle.

The ratio of enemy to enemy forces has reached the point of five to one, and it is also fighting outside the borders, which is extremely dangerous.

Fortunately, Li Zhonghua brought 50,000 soldiers and horses from Kangding, so that the difference between the strength of Goguryeo and Goguryeo was not too great at this time.

In the face of such a situation, the Tang army from the emperor to the ordinary soldiers, but they are very optimistic, Li Shimin said to everyone: "If I am high longevity, I can have three strategies, first, lead the troops directly over, Lian'an City as a base, according to the danger of the high mountains, eat the millet in the city, and plunder the cattle and horses of our army, we attack them, there is no way to solve them immediately, we can't send troops if we want to, they can find a way to stop us, sit in the trap of our army, and the best strategy is also."

Second, lead the people in the city to abandon the city and flee together.

Third, I thought it was right, and I didn't put our Datang in my eyes, and came to fight with us, and made a decision. Looking at his people, I feel that Gao Yanhui will make a decision, and he will be captured in front of our eyes. ”

When ordinary soldiers heard that the Goguryeo army was coming, they all drew their swords and were overjoyed. It can be seen that the Tang Army is full of confidence in its field capabilities.

On the Goguryeo side, Gao Yanhui was obviously confused by his absolute superiority in numbers, and began to ignore the Tang army.

Of course, there are not people who don't understand in the Goguryeo army, and there is a person named Gao Zhengyi who said to Gao Yanhui: "I heard that the Central Plains was in turmoil, and heroes rose up. King Shenwu of Qin, invincible, leveled the world, the south is the emperor, the north is obedient, and Xirong contributes.

Now the country is coming, and the fierce generals are sharp, and they are all here, and their edge cannot be taken seriously. Now for the plan, Mo Ruodun soldiers do not fight, protracted, dispatch heroes, cut off their feeding, but ten days, the army food must be exhausted, can not fight, want to return to no way, this does not fight and win also. This strategy was precisely the plan that Emperor Li Shimin least wanted the Goguryeo army to implement.

However, under the condition of having absolutely superior troops, they avoided fighting instead of fighting, and the 150,000 troops refused to defend in danger, and the consumption of materials was even more astonishing, so it was obviously extremely difficult to accept such a strategy from top to bottom.

Therefore, the commander of Goguryeo, Gao Yanshou, vetoed this strategy at that time, decided to take the initiative to attack, and broke the Tang army in one fell swoop, so he led the army straight forward and drove into a place only forty miles away from Anshi City

Yanshou led his army to a place forty miles away from Anshi City. Li Shimin ordered Ashina Sheer to lead a thousand Turkic cavalry to lure the enemy, and pretended to retreat as soon as the battle began.

The Goguryeo army rushed forward and reached a place eight miles southeast of Anshi City, where they lined up in the mountains. Li Shimin personally went to the high places with Li Tao and others, as well as hundreds of cavalry, to observe the situation of the mountains and rivers, and the places where the troops could ambush and enter and exit.

Li Shimin ordered Li Shiyun to lead an army of 15,000 to set up a formation in Xiling, and Wei Chi Jingde led 11,000 elite soldiers as surprise soldiers to attack the enemy's rear from the narrow valley in the north of the mountain.

Li Shimin personally led an army of 4,000 troops, carried drums and horns, and carried banners, climbed the North Mountain, and ordered all armies to attack together when they heard the sound of drums and horns.

Gao Yanshou saw Li Shiyun arranging a formation, and formed a formation to fight. Li Shimin saw that Wei Chi respected the German army, and ordered to make drums and horns, raise flags, and march with all kinds of troops.

Gao Yanshou and others were terrified and wanted to divide their troops to resist. Tang general Xue Rengui shouted and rushed into the Goguryeo army formation, invincible.

The Tang army attacked, and the Goguryeo army was defeated. The Tang army beheaded more than 20,000 ranks. Gao Yanshou and others led the remaining army to consolidate themselves in the mountains. Tang Taizong ordered all kinds of soldiers and horses to surround it.

Wei Chi Jingde withdrew the bridge and cut off the return route of the Goguryeo army. In desperation, Gao Yanshou and Gao Huizhen led 36,800 people to surrender, entered the army, and walked forward on their knees, bowing and asking for their lives.

Tang Taizong elected 3,500 people from Nisa and his subordinate chiefs, moved to the interior, and released the others and let them return to Pyongyang, they all raised their hands and shook their heads, and the cheers spread dozens of miles away.

In addition, 50,000 horses, 50,000 cattle, more than 10,000 iron armor, and a large number of other weapons were captured in this battle.

The whole country of Goguryeo was very shocked and frightened, and the Goguryeo people in Houhuangcheng and Yincheng abandoned the city and fled by themselves, and there was no human population for hundreds of miles.

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