After the copper dragon head was exposed, the soldiers who controlled the fire dragon aimed the dragon's dragon head at the building car outside the city under the cover of the friendly forces around them. Then he motioned to the two wrestlers behind him to operate the fire dragon's oil pump, pumping the carefully blended fire oil out of the oil depot under the city wall, and then sprayed it along the dragon head to the Turkic building car not far away.

At first, Li Wenyuan only considered that it was really inconvenient to use the traditional roller wells to draw water in some places, so he relied on his memory to hastily draw a few sketches of the appearance of the pressurized water device of the common well in the market and handed it to the golden shopkeeper, hoping that the golden shopkeeper could make this device and promote its use in his own territory. This not only avoids the fact that there is a shortage of groundwater in some places where there is an extreme shortage of water, but also avoids some of the dangers that may arise when using a reel well to draw water. All in all, this is a cross-era invention that is beneficial and harmless, but Li Wenyuan himself does not know much about this thing. I only remember the small memories of what kind of water was used to seal and the sluice gates that could only be opened in one direction, and I can't remember any more.

Here I have to sigh the ingenuity of the golden shopkeeper and the traditional Chinese craftsmen under him. At this time, he only relied on a few simple drawings drawn by Li Wenyuan, as well as a few key words occasionally mentioned in Li Wenyuan's description. It was in a very short period of time that Li Wenyuan successfully produced the device in his mind, and finally after more than a month of improvement and optimization and treatment to reduce manufacturing costs, it was finally officially promoted to the entire Western Regions this new type of groundwater intake device.

Later, when a staff officer was returning to his hometown to visit relatives, he saw these new water intake devices. So he was very curious about the ability to pump out groundwater at a depth of a certain amount of ground with great effort. In particular, the labor-saving degree of this device can be easily operated even by a seven or eight-year-old Huangkou child. At the same time, he also thought of the topic he was studying in the military academy, so he suddenly wanted to combine this water intake device with the fire oil used in the army, and with the cooperation of the Ministry of Industry, he finally made a prototype of this fire dragon.

However, there are still some differences between the prototype of the fire dragon at that time and the fire dragon on the city wall now, and the prototype prototype can only barely transfer the fire oil from being stored on the city wall to being stored in a relatively safe city. In order to avoid being ignited by the enemy's fire arrows, this prototype was named an oil ejector by the people involved in the research at that time, and the final report was handed over to Li Wenyuan.

Li Wenyuan was greatly surprised when he saw it, the working principle of this kind of thing has faintly had a shadow of the flamethrower of later generations. Therefore, Li Wenyuan proposed a research direction to the personnel who developed the oil drainer, hoping that they would develop a device that could spray fire oil out of a hundred paces away, and cooperate with this oil drain to strengthen the defense on the city wall. After countless times of depressurization, air leakage, and overpressure explosions, the prototype of the fire dragon was finally made that could lead the fire oil up from under the castle and spew out more than 100 steps away.

Since it was developed and installed on an important defensive line, this wall defense device with great lethal potential has never shown its true face, and has been covered with oilcloth all day long, becoming a mysterious ornament. At this time, in the face of the fierce siege pressure of the Turks, this fierce beast was finally released from under the tarpaulin, and in the face of the menacing Turks, it showed its sharp fangs.

At this time, the fire dragon that was placed on the Great Wall was operated by the wrestlers, and a large amount of jet-black fire oil was sprayed along the copper dragon's mouth, and the fire dragon sprayed the fire oil into the building car outside the city wall in the hands of the soldiers who controlled the dragon's mouth, and then flowed down the building car to the ground, and then flowed along the terrain to the attacking Turkic army.

At this time, before the soldiers who had seen the tragic situation on the catapult position came back to their senses and fled backwards, the troops defending the city threw down the fire bottles that had been prepared in advance, and as the fire bottles were thrown out of the city wall, they slowly fell to the ground, and the hearts of the Turks who were attacking the city outside the city also slowly fell into the deep valley. They had just made a backward run for their lives, and the flask had already fallen to the ground and shattered. The strip of cotton cloth that had been used to plug the mouth of the bottle after it had been lit had already ignited the fire oil that had spread to the entire army on the ground.

The fire that spread quickly ignited all the buildings and carts operated by the Turks outside the city, turning them into more than a dozen huge torches. But the fire dragon only sprinkled the fire oil on the outside of the building car, so although the building car was ignited at this time, the people hiding in the building car had nothing else to do except feel the scorching heat. At this time, when the Turks in the building car had just breathed a sigh of relief, they saw that on the opposite side of the long bridge that had been lowered, those Han soldiers showed a very kind smile to themselves, and before these Turks could carefully taste the meaning behind this smile, the clay pot full of fire oil was thrown in by those Han soldiers one by one along the exit of the car, and suddenly the unique smell of fire oil produced in the Western Regions was wafting inside the whole building car. Then, a mischievous spark broke away from the periphery of the building car and landed on the long bridge, lighting a new fire again in the frightened eyes of the Turks inside the building car.

Shibi Khan saw that the siege cart was ignited again by the Han people defending the city, and before he had time to scold, he saw a scene that made him extremely frightened: the scalpers who had been pulling the cart forward were now ignited by the fire and the armor covered by their bodies, and there was no way to enter the city wall in front of them at this time, so they all ran back in the direction they came from, and came straight to their camp.

Many soldiers guarding the camp saw this scene, and they all invariably led arrows at those oxen. However, the bows and arrows of the Han people could not penetrate the armor worn by those oxen, let alone the arrows of the steppe people who were not advanced in their craft.

In a panic, Shibi Khan did not have time to withdraw his army from the camp, so he was dragged by his own soldiers on the side to avoid the charging route of this group of mentally weak scalpers. Although the building car itself is very strong, under the scorching fire, some load-bearing places are also a little unable to support it. It was possible to hold on to the plains when they were being dragged forward by the cattle running, but now when they entered the camp and kept hitting the tent, they collapsed one after another, turning from torches to fires.

(End of chapter)