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Wang Xuance once created a record of "one person destroying one country" in history.

In the twenty-first year of Zhenguan (647), Wang Xuance, who was then the governor of the right government, was ordered by Taizong of the Tang Dynasty to go to India to visit Siraditia, the king of the Indian kingdom of Makada, which had friendly relations with the Tang Dynasty.

After Wang Xuance finally came to India, he found that King Siradidhia was dead and the throne had been usurped by the Indian minister Arjuna. At the same time, not only the country of Makkada, but almost all of India was in the midst of war at that time. Wang Xuance and other Tang envoys were also attacked by Arjuna and imprisoned. Fortunately, Wang Xuance escaped from the predicament safely and escaped from Makada.

Wang Xuance did not flee back to the Tang Dynasty in this way, but rode north from the Indian continent, crossed the Gandis River and the Sindustan Plains, and targeted the Himalayas, all the way to the Kingdom of Nepal.

Here he negotiated with King Amshuwalman of Nepal, and Wang Xuance borrowed troops from King Amshuwalman of Nepal in the name of marrying Princess Wencheng, the adopted daughter of Emperor Taizong of the Tang Dynasty and having friendly relations with the Tang Dynasty. Borrowing 7,000 Nepalese cavalry, he once again led his troops back to Makada to challenge the usurper Arjuna.

After a fierce battle, Wang Xuance finally won the victory. In the decisive battle on the banks of the Gandis River, 3,000 Arjuna's army, including the elephant army, were killed, 10,000 were chased into the water and drowned, and at least 11,000 were captured. It is inferred that its total strength is at least 30,000, and it is not easy for Wang Xuance to win a big victory with a small number of troops, and it is still in a foreign country and with foreign troops.

After capturing Arjuna and restoring peace to the country of Makada, Wang led the Nepalese army back to his home country. Of course, at this time, he also rescued other subordinates who remained in prison, and after capturing Arjuna, the king of Tirabu Array, he dedicated them to Tang Taizong in 648 and returned to the Tang Dynasty.

Because of Wang Xuance's merits, Li Shimin promoted him two levels in a row and was promoted to Chaosan Doctor.

At the beginning of this year, 29-year-old Wang Xuance was serving as a county magistrate in Huangshui County, Rongzhou (Liuzhou), and received the will of the crown prince Li Su, and went to the headquarters of the expeditionary force to conquer the Linyi country, and met with His Royal Highness the prince.

Wang Xuance didn't know why, His Royal Highness the Crown Prince noticed a small county order from him, and inexplicably came to the Ministry of Foreign Affairs to report. This time, he was sent to Silla and Baekje.

Silla and Baekje were threatened by Goguryeo for many years, and naturally supported the conquest of Goguryeo. Their only fear was that the Tang Dynasty would not be able to defeat Goguryeo, and they were worried that they would be retaliated against by Goguryeo.

Wang Houtce was very flexible, and he made an agreement with the kings of Silla and Baekje that when the Tang army crossed the Yalu River, they would raise troops again.

The Flying Tigers' action to recapture the remains of Gyeonggwan in Goguryeo strengthened the confidence of the Silla and Baekje kings, and they began to prepare for war, waiting for news from the Tang army.

Goguryeo has developed rapidly in the past 10 years and its national strength is strong, mainly because of a strong figure, he is the prime minister Quangae Suwen. Quangae Suwen is a child of the royal family, the royal family is weak, and the real power of Goguryeo is in the hands of Quangae Suwen. His status in Goguryeo was equivalent to Zhuge Liang's status in Shu.

When attacking Buyeo, Quangai Suwen was already ready for possible intervention in Datang, and he was confident that he would defeat Datang's attack.

The terrain of the Northeast and the Korean Peninsula is complex, and militarily speaking, the climatic conditions for operations can be divided into two types: freezing and thawing. During the thaw period, rivers and lakes were crisscrossed, which was very unfavorable to the actions of the ancient army that lacked the means to cross the river.

Comparatively speaking, it is more advantageous to fight in the freezing period. However, the severe cold climate is a great obstacle, and the climate often occurs at minus 20 or even 40 degrees.

Quangai Suwen's method of dealing with the Tang army was mainly to avoid field battles and use the fortified city to consume the strength of the Tang army. Their solution was to build tall castles by taking advantage of the abundant timber resources in the northeast. Not only that, but they also poured water on the outer walls of the castle to form a solid and smooth ice, which was difficult for the Don army to break through such a fortress.

In this case, the attackers attacked in the field and had to face not only a strong fortress, but also a blow from the bitter cold.

The wars against Goguryeo in the early years of the Sui Dynasty and the Tang Dynasty basically failed in this way.

On November 27, 230,000 Tang troops and 60,000 Buyeo troops crossed the ice of the Liao River and invaded Goguryeo, and the war officially began.

On December 1, Liaocheng (Benxi) City.

Li Shimin stood on a hillside in the west of the city, accompanied by Li Jing and others, to observe the situation in Liaocheng.

Li Jing reported to him: "Your Majesty, there are about 40,000 people in Liaocheng, and 20,000 Goguryeo defenders, our army has surrounded the city on all sides, and Xue Rengui is in charge of commanding, and the preparations for the siege have been completed, and the attack can start at any time."

Li Shimin said: "Let's start. ”

Li Jing gave the order, and the herald immediately blew the horn. Xue Rengui heard the trumpet, waved the command flag, and commanded the troops to attack.

The Goguryeo people also had research on the Tang army, they knew that the Tang army's bows and crossbows were powerful, and in order to guard against the Tang army's bows and crossbows, they added a wooden fence on the city wall, with a top cover on it, which could effectively prevent the Tang army's projectile attacks.

The wooden enclosure was very strong, with shooting holes and spear piers on it, and the Tang army used ladders to attack the city, and if they wanted to cross the top of the wooden enclosure, their bodies would be exposed to the defenders' swords, guns, bows and crossbows. The previous attackers suffered from it.

The officers and soldiers of Goguryeo were ready and waited to fight the Tang army.

The attacking troops of the Tang army came up, and the Tang army was divided into squads, and in front of them were wooden shields operated by three people, covering the soldiers of the whole squad.

Seeing the Tang army approaching step by step, the Goguryeo crossbowmen had no choice but to watch the Tang army approach.

When the Tang army reached a distance of 50 meters from the city wall, it no longer advanced. They connected the wooden shields, and the Goguryeo people on the city walls could not see the movements of the Tang army behind. Soon, the wooden shield dodged a gap, and a thick bed crossbow shaft protruded from it.

But the Tang army still did not attack, and under the cover of wooden shields, one after another stone throwers also advanced near the city wall.

The Goguryeo people also had bed crossbows and stone throwers, but there were not many of them, and the losses caused to the Tang army were not too great.

Finally, the Don army began to attack.

The stone thrower of the Tang army did not shoot stone bullets, but clay pots with a strip of cloth on them.

The Goguryeo people knew that this was a fire attack, and they were not too afraid. At that time, the oil was rapeseed oil, which was small in production and small in fire. The Goguryeo people set up cauldrons on the city walls, which could be used to water the enemy and to extinguish fires.

All the tactics that the Tang army might use, the Goguryeo people were fully prepared.

However, when the crockpot fell, to the surprise of the Goguryeo people, the fire turned out to be surprisingly fierce. The Goguryeo people tried to extinguish the fire with boiling water in a pot, but found that it didn't work at all.

As a large number of clay pots fell, the city was already in flames, and the Goguryeo people were in chaos.