Li Lizhi said: "The lyrics and music were written by Brother Wu, and he taught his daughter to sing it."

Li Shimin praised: "This kid is really capable and proficient in everything."

Then, Li Shimin and his daughter talked about family matters.

When Li Shimin asked about Empress Changsun's physical condition, Li Lizhi followed Empress Changsun's instructions, saying that she was tired and not seriously injured. She also asked Li Lizhi to say that Li You returned to Chang'an, and Empress Changsun asked him to go back to help him check his health. This gave Li You a reasonable explanation to return to Chang'an.

Next, the condolence group organized many small teams to perform condolences for the soldiers, which won praise from the soldiers.

The song "The Moon of the Fifteenth" soon became popular among the Tang army soldiers of the Eastern Expedition Army. Then, with the singing of the people who transported materials, it soon became popular across the Tang Dynasty.

On this day, Zhang Baogui brought a team of Flying Tiger Army and transported a large amount of supplies to the city of Anshi. Last time, Zhang Baogui followed Li You to Baekje, but it was not his turn to make contributions. This time, Li You sent him to assist Li Shimin in attacking Anshi, and specially asked him to make achievements.

The Tang army had not launched an attack for a long time, but the Goguryeo people knew that the Tang army would continue to attack the city sooner or later, so they did not dare to relax their vigilance at all.

That night, a northwest wind of about three to four levels blew from the sky. The defenders at the city of An City endured the cold wind and watched the movement outside the city vigilantly.

The darkness outside the city was unfathomable, and there was only the "punch" sound from the wind blowing flags.

At 2 a.m., the sentries suddenly discovered that countless tiny fires were lit up in the northwest direction outside the city. At the beginning, they thought it was a torch, which indicated that the Tang army might be about to launch an attack.

The Goguryeo people shouted loudly, and the officers and soldiers rushed to the top of the city, bent their bows and arrows, preparing to counterattack the Tang army's attack.

However, something strange happened. The flames of the stars did not pounce on the city wall, but flew towards the sky. Those small highlights, like stars, flew towards the direction of the city.

The Goguryeo people didn't understand what was going on, and they shouted in horror, looking up at the strange scene in the sky.

Soon after, the small highlights gradually grew bigger and then flew above the city.

The Goguryeo people vaguely saw that these things seemed to be huge lanterns, and there seemed to be ropes tied under the lanterns. The Goguryeo people couldn't guess what these things were for.

The lanterns continued to fly towards the city under the gaze of the Goguryeo people.

Suddenly, the lanterns swayed violently, and then they burned into a huge fireball. The fireball continued to flutter for a moment and began to fall towards the city. Countless fireballs floated to various parts of the city under the influence of the wind.

The falling fireball was very powerful, and when it touched something, it stuck to it and continued to burn. Many soldiers were stuck to their bodies by the fire balls falling from the sky. For a moment, they could not extinguish the fire balls, which made them cry and howl.

The fire ignited the wooden house below. The fire took advantage of the wind. In a short time, a huge fire scene was formed, and the raging fire illuminated the entire sky.

Li Shimin and others stood on the hillside outside the city and could clearly see the fire in the city. The fire was too big and had spread all over the city, and the scene was very spectacular. Even the generals who had experienced many battles like Li Shimin, Li Jing and others were all frightened.

Li Shimin looked at the Goguryeo who was struggling in the fire and felt a little uncomfortable. He said, "Try to use such cruel weapons in the future."

What kind of weapons did the Tang army use?

That day, Li You saw eunuchs carrying lanterns by in Liangyi Hall, and suddenly remembered Kongming lanterns.

Then, he asked the craftsmen of the Ministry of Works to make large Kongming lanterns. They installed clay pots filled with hot tins. In order to facilitate adhesion during burning, a lot of viscous crude oil was added to it to form an effect similar to napalm bombs.

When the Kongming lantern was put on, a long rope was connected under each Kongming lantern. When the Kongming lantern took off and flew over the city with the wind, several soldiers held the long rope and shook violently. A hammer was hung on the top of the Kongming lantern, and the shaking of the hammer was used to break the pot.

After the pottery jar was broken, the turbulent oil began to burn when it encountered the flames below, which burned the Kongming lantern and caused it to fall. The soldiers loosened the ropes and let it fall with the wind.

The fireball fell to the ground and ignited the objects below, causing this huge fire.

The continuous fires formed a huge fire scene in the entire city. The temperature in the middle of the fire scene was as high as hundreds of degrees, and countless Goguryeo people were buried in the sea of ​​fire.

The Goguryeo people also want to put out fires, but how can they rescue such a large-scale fire?

Soon, the city gates opened, and many Goguryeo people escaped from the city to escape the fire. The Tang army accepted the surrender of these people and did not take the opportunity to attack the city. There was no need for them and they could not enter the city of fire.

The fire burned for two days and one night, and Anshicheng basically became a dead city.

After the fire was extinguished, after the Tang army persuaded surrender, the remaining Goguryeo people opened the city and surrendered.

According to statistics afterwards, there were more than 50,000 Goguryeo people killed and injured in this man-made fire.

After Anshicheng was captured, Li Shimin released a group of Goguryeo people who survived in Anshicheng, and asked them to spread the terrifying combat power of the Tang army to manipulate the sky fire.

Next, wherever the Tang army went, the Goguryeo people basically surrendered.

The Tang army was invincible. A few days ago, the Tang army had already crossed the Yalu River.

Chang'an City.

These days, Li You's main energy has been devoted to the development of fire-fighting equipment. The drawings drawn by Li You are very accurate. The structure of the high-pressure water pump is not complicated, but every part is required to be very precise. In ancient times, there was a lack of cutting and grinding tools, and each part had to be made by craftsmen by hand, which was very difficult.

However, the craftsmen of the Tang Dynasty were still very skilled. According to modern judgment standards, many craftsmen in the Ministry of Works have reached the level of eighth-level workers.

The craftsmen finally completed a high-pressure water pump, but during the test, they found that the distance of the sprayed water dragon was less than 15 feet because the quality of the sealing ring was not up to standard.

There is no rubber at this time, and craftsmen can only use buffalo leather instead. Buffalo leather is prone to deterioration and rot in a humid environment and is not tough enough.

Li You gave the craftsmen an idea to use a steel seal ring with cotton thread wrapped around it. After testing, the effect was pretty good.

On this day, the first fire truck was developed. It was a four-wheeled carriage pulled by two horses, with a 1,500-liter water cabinet equipped with six firefighters, equipped with high-pressure water pumps, spray guns, folding fire ladders and other fire-fighting equipment.

Yuchi Gong was very interested, and he and Huangfu Rui went to conduct the test in person.

The Palace of King Qi.

Yuchi Gong and Huangfu Rui came to the Qi Wang Mansion and reported to Li You the test results of the fire truck, which basically achieved the designed fire fighting ability.

Just as they discussed how to organize a large number of fire-fighting equipment to establish a regular professional fire-fighting team, and when they were promoting it nationwide in the future, Li Chengqian sent someone, and another problem was placed in front of Li You.
Chapter completed!