Uncle Li didn't say anything, but just observed these new affairs with a more rigorous look. From time to time, he whispered to Uncle Li Jing standing beside him. Occasionally, the two of them smiled knowingly, which made me feel chill all over. Well, it seems that my mind is more evil.

Uncle Li just circled around and observed this magical cylinder. Then he turned his eyes to the distance.

"Is that the city wall you built temporarily?" Uncle Li didn't say anything for a long time, and was observing around with a telescope, and suddenly raised his hand and pointed at a high wall thousands of steps away from the opposite side and asked me.

I nodded and said, "That is, this wall is built according to the thickness and height of the walls in the outer city of Chang'an. Its solidity is far greater than that of all the cities in Goguryeo at present."

"Oh? Is that true, Old Li, come and take a look. If the city wall is used to siege the normal tactics, how can it be destroyed?" Uncle Li turned around and asked Uncle Li Jing, who was also observing the opposite city wall. Uncle Li Jing shook his head with some regret: "If the city is full of walls like this, then the old minister suggested that it is the best strategy to siege and not attack. This kind of city wall is probably not much different than the city walls in Chang'an City. If you attack the land for a strong force, it is not possible to destroy it, unless you use stone throwers more often. However, it is difficult to open the gap."

"What you see is coincident with me?" Uncle Li nodded with praise and hooked his finger at me: "Son-in-law, you demonstrated to us the last time that the city wall was destroyed with a medicine bag. However, the city wall built on that time was not half the height and thickness of the land. Now you are really sure to destroy the city wall directly from here?"

I bowed respectfully to Uncle Li: "Don't worry, father-in-law, you must be safe, your son-in-law will never speak nonsense. In my eyes, this wall is like a native chicken and a tiled dog."

"Young Master, don't blow your head. At that time, you won't have any good results." Uncle Li Ji smiled and said this from behind. I was very angry. He looked down on me. There were also the work results of the vast number of staff at the Wuhan Research Institute who worked hard for a few years. For this reason, I want to tell all local people that if you have knowledge and mind, you will definitely be able to use scientific methods and turn the solid city wall into a pile of mud.

At this time, Zhong Hua finally ran over: "Sir Fang, you are ready. All the gunners and loaders are in place. The ammunition is also ready and resumed. All the ammunition is made from the new gunpowder this time, with ten guns per gun."

"Well, okay, you go there first." I nodded to Zhong Hua and said that I knew, and then reported the current situation to Uncle Li: "Your Majesty, all the work in the area is ready, so please come on the stage to watch and sit down."

"Well. That's it. I'll just watch the son-in-law perform and try it out. Remember, don't let me down." Uncle Li was still a little worried. The main reason was that the old guy had never seen a real large-scale firearm war scene. It was not his fault. Today. I just wanted them to understand that cold weapons will eventually be replaced by powerful firearms.

After Uncle Li and others sat down, I stood in front of these brave gunners, taking life as a joke, and lined up thirty mortars, including thirty gunners, thirty deputy gunners, thirty loaders, and thirty rangefinders. This is the standard equipment. They are all fearless and have a strong momentum, which is very proud of.

Looking at these fearless soldiers, they really made me proud. At least, I didn’t have the courage and courage to operate this kind of local mortar by myself. Courage is precious and life is higher. Adhering to the principle of safety first, and in order to make me look more heroic, I have put on my full body armor and even my helmet, so I can at least make myself more psychologically safe.

I patted the stamped ground armor on my body. Well, my defense should not be as strong as the bulletproof vest in later generations. I reached out and picked up the flag and waved it vigorously.

With the help of loading hands, the gunner and the deputy gunner installed the gun barrel on the gun mount. The gun barrel was steadily combined with the gun mount and carried out the preparation procedure. "Start distance measurement!" Under my command, the thirty distance detectors trained by me stood beside the gun position, lifted their right arm horizontally, clenched their fists and raised their thumbs, closed their left eye, and overlapped the left side of the thumb on the same straight line with the target object with the right arm, and kept their right arm and thumb moving. Then closed the right eye, and then observed with the left eye on the same side of the thumb, and you will find that this edge line is a distance away from the right side of the target object, and then estimate or measure the length of this area, and multiply this length by ten. This is the actual distance between the gun position where they are standing and the target.

It's a very simple way. When I was in the reserve, I watched patriotic education movies and fought against Vietnam. At that time, there were distance gauges doing this. Later, I asked a reserve officer who retired from the artillery and realized that this was a simple and effective hand-eye distance measurement method. I used this method to calculate the length of the playground in the academy, and the error would not exceed two meters. In the Tang Dynasty, I could not make a laser rangefinder. I could only teach them this method.

This method is both simple and easy to calculate, so they are now lacking in the skill of applying it. In fact, the gunner and the deputy gunner can do this method. The rangefinder is just reserve personnel, but in order to make them use their full use, they are all on the battlefield together.

Each rangefinder recorded the various measurements on paper, and then reported the numbers loudly. I also used the same gesture to make a measurement. After estimating, it seemed that their calculation results were not very different from ours, and it was quite correct. It was about 1,125 steps from the cannon position to the high wall.

"One thousand one hundred and twenty-five steps! The gunners adjust the angle!" Another order was sent, and the gunners began to fine-tune the direction of the gun barrel, while the gunner had already taken the medicine bag over the side, pressed the distance scale above the upper lead, cut the lead, and the deputy placed the bottom of the barrel according to the amount.

Uncle Li and others sat on the platform, looking at the busy scenes with great interest. Soon, the preparations were fully prepared. I signaled to Zhong Hua. Zhong Hua nodded in a clever way and quickly sent someone to assign cotton to the military generals and leaders who were sitting on the platform.

The gunners have already put on the earplugs ready. They can only stay by the cannon and plug them in the earplugs, which can at least reduce the harm of the roar of the cannon to their ears. I have also taught them that when firing, they must open their mouths wide. It is said that this can also reduce ear pressure and prevent eardrums from rupturing.

"What do you want to do? Old Cheng Er is smart and smart, so you don't need these things!" Uncle Cheng refused carelessly, and hesitated to the side to mock Uncle Li Ji. Uncle Li Ji groaned and decided not to block the thing: "You old Cheng are not blocked, nor are Li, who is afraid who will come?"

These old guys are not good birds, and no one wants to lose face in front of others. After a round, they all refused. Seeing that the generals around him were not blocked, the famous general of the royal family also refused: "I'm afraid that I've seen so many storms. I think that the old man still marched on the road on a thunderstorm night and killed the enemy and made achievements. Could it be that he was afraid that this little thing could hurt the general's ears?"

As a result, no old guy was willing to be here. Zhong Hua was useless in persuasion, so he had to turn his rescue eyes to me. I looked ahead seriously and looked at him, turning a blind eye to Zhong Hua's rescue eyes, and even a little scammered. I wish I could be more deaf in these old men, so that they could all get sick and save my worries.

Uncle Li picked up two balls of cotton, hesitated for a while, and decided to be a tough guy with gritted teeth and held on to be a tough guy, at least not to lose the price in front of Uncle Cheng. With a wave of his hand, he threw the cotton back into the wooden plate, and pulled out his hair on his forehead very casually: "Son-in-law, can you start?! I am already anxious to wait."
Chapter completed!