The existence of crossbows is also of great significance. The value of crossbows lies in its range, penetration force and accuracy. It is also a crossbow with a single-soldier long-range weapon. Its effective range is nearly half longer than that of a bow. It can penetrate two layers of iron armor. Because the crossbow can focus on aiming as long as the string is fixed, unlike the bow that it has to draw and aim at the same time, the initial speed of the crossbow is much higher than that of the bow, and the accuracy rate is higher than that of the bow. The effective shooting distance of a single-soldier crossbow can reach 300 meters, while the effective shooting distance of the bow is only 200 meters.

Moreover, the main targets of the Tang Dynasty were nomadic peoples, and most of the enemies they encountered were cavalry. Although there were many cavalry in the Tang Dynasty, the main force in the war was still infantry. When encountering enemy cavalry charges in field battles, they often cannot support them and cannot cause heavy damage when the enemy approaches. Therefore, the accuracy of the crossbow and the rate of fire of the bow can cooperate well, which is in the same way.

Although the production of crossbow tools has made great progress in recent times under the special research of craftsmen of Wuyan, Datang, and has adopted a number of high-tech technologies, the rate of fire is still lower than that of the bow, but it has been nearly twice as much as before. About three arrows can be used to launch a crossbow. Moreover, after adopting the new three-stage shooting skills, the lethality and coverage shooting density of the crossbow have gradually become the main long-range attack methods at present. Since the standardized flow operation was adopted, the production of crossbow machines has greatly improved the production capacity, but the material of the crossbow arms still limits the scale of crossbow production.

At least I had wandered around military-themed websites back then, so I knew that most of the structures of mild steel could be used to make crossbows, so I went through in-depth discussions with the veterans of the Wuhan Research Institute. Finally, I tried my best to make these men agree to test the production of a batch of finished products. Of course, they were all made according to standardized operations.

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－-

The Ministry of Works of the Tang Dynasty will supervise how far the cooked iron made in the past is mild steel. Moreover, most of these two items are used as auxiliary materials for weapons, and the steel filling method is used to make weapons. However, now the steel production has increased greatly, and the supply of mild steel is even more oversupply. As the director of the Wushu Research Institute, I paid my own capital to reward the steelmaking industry in Datang. At this time, I will not use the waste and use my house as an experiment to pay some benefits. I am really sorry for myself, so I can only have reinforced concrete for this skyscraper.

Without this thing, would I dare to build skyscrapers? Even if I build it, I wouldn't dare to enter it, unless I'm not afraid of death. You should know that in ancient high-rise buildings, in order to reduce load-bearing, the building in our area was mostly wood and stone. However, the overall fire resistance of this building was higher than that of other Datang buildings. However, the weight was caused by the damage. Fortunately, with reinforced concrete, high-rise buildings were no longer a dream. Because I was worried that the building materials would not be up to standard, I specially cast twelve reinforced concrete columns on each building structure. The remaining two were located in the middle of the building, and the rest were supported on the exterior walls. I am not a design master. According to my point of view, the more good things, the safer it is. However, it is precisely because of this that I am afraid that the most solid building in the Tang Dynasty is my Tang Twin Towers.

Three days later, I finally got the sample. Under the guidance of the old craftsman, after assembling the various structures, a perfect steel crossbow finally appeared in front of me.

Beautiful, really beautiful. The streamlined crossbow arms are made of hardwood to reduce weight, while the crossbow is made of soft steel multi-layer pressing, which strengthens the elasticity of the crossbow. In the sun, the crossbow looks so bright, and the curved streamlines look so pleasing to the eye. The crossbow also uses a steel structure. After weighing it with your hands, the overall weight is about eight to ten kilograms.

After using the pulley-type push-pull structure above, he aimed at the target 200 meters away and pulled the trigger. He felt that the crossbow slightly shocked. The target 200 meters away had a bang, and the grass chips exploded, and a large hole was exploded in the red heart. The crossbow arrow seemed to penetrate the straw woven target nearly half a foot thick. Immediately someone ran over to check it. Only after more than ten steps did he see the crossbow arrow that was about an inch of land inserted obliquely.

Do you still need to try it? I only tried three arrows, and I broke off a pair of steel crossbows with the ecstatic Zhong Hua. I asked the old craftsman next to me, and then put the components of the two pairs of steel crossbows into the wooden box, and then carried the wooden box with more than 20 crossbow arrows and ran towards Chang'an.

He walked into the hall with Zhong Hua and presented the wooden box containing a steel crossbow to Uncle Li excitedly: "Your Majesty, my husband Fang Jun brought the new crossbow from the Wushu Research Institute to His Majesty."

"New crossbow?" Uncle Li didn't quite understand. After all, the Tang Dynasty had a variety of crossbows. The largest crossbow, as small as hand crossbows, were all very complete, and there was no need to spend time to make new inventions. Well, Uncle Li's idea was probably like this.

"I said to be a virtuous son-in-law, Zhong Qing, you are... You have said that the crossbows of our Tang Dynasty in the past are the most advanced, why are you thinking about new production?" Uncle Li took the wooden box that Zhao Kun took from me and opened it, and couldn't help but sigh.

Uncle Li took out the longest crossbow's soft steel sheet, and said with his hands, "This is mild steel!"

"It's mild steel, which is a cast part of mild steel to be assembled into a crossbow." I came to me and gestured to the installation action.

Uncle Li's eyes lit up, his eyebrows gently raised, he reached into the wooden box, fiddled with the utensils inside, and his expression began to appear serious. "Oh? You mean, can you install them? The components of these two crossbows can be disassembled at will? Redistribute their components at will and then combine them?" Uncle Li was indeed a smart person, and he immediately grasped the key.

I nodded: "I just learned from the old craftsman for a while. This thing is very simple." I reached into the wooden box, picked up the parts, and started assembling it. It was easy for me, who had disassembled the alarm clock at home and put it back in, and then separated my cousin's ship model and aircraft model, and then mixed it into paste and glued it back. Finally, I was beaten but couldn't help but never change it.

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－-

Besides, the parts are only a little bit, very simple, and I didn't have much time to do it. After I put a pair of steel crossbows on the strings, I placed it in front of Uncle Li, but Uncle Li's eyelids didn't even twitch: "Continue, install this pair again."

I glanced at Uncle Li, and I had a serious expression. I just pretended. Anyway, I just wanted to practice my skills and show my skills in front of the emperor. It was still very rare to have a chance.

When two pairs of steel crossbows were placed in front of Uncle Li, Uncle Li's expression finally changed. He picked up one of them, tried the crossbow strings, and then glanced. I quickly presented the crossbow arrows. Uncle Li carried the crossbow and held the crossbow arrow and walked out of the hall. He stood outside the door. Someone had already lifted the target and placed it a hundred meters away. One arrow, two arrows, and three arrows. After Uncle Li shot the sixth crossbow, he changed to another steel crossbow and aimed and shot in the same posture until the target was shot so bad that there was no crossbow arrow in my hand.

Uncle Li didn't say anything. Although his expression was very excited, I could see that he was also worried. He waved to me and Zhong Hua, and returned to the hall to sit down.

After sitting down, Uncle Li's first words were: "Good things are really good things! How long did this thing be made?"

"It took two months. Because it was the first trial production, the first month was to design and standardize the size and weight of various components. It took about a month to make the finished product. If it was mass-produced, it would probably be completed in about ten days. Now the steel mill of our Wuhan Institute of Technology produces nearly 50,000 kilograms of steel per month, with sufficient materials, and according to the production capacity and flow of operation of the Wuhan Institute of Technology, it can produce about 1,000 pairs of crossbows in a month." Zhong Hua's performance was normal. Although he is only a fifth-rank official, since he was a deputy of the Wuhan Institute of Technology, he has had a lot of dealings with Uncle Li since he was a permanent official of the Wuhan Institute of Technology, and he is not as frightened as he has changed his past.

"One thousand pairs?" Uncle Li pursed his lips, and his sword eyebrows finally stretched out: "Okay, okay, but I made a great contribution. Since steel is used as a crossbow, it will not be deformed due to the weather, and there will be no need for so many materials. More importantly, I just saw that the two crossbow tools can be replaced by the operation of your son-in-law. In this way, my Tang Dynasty can greatly save a lot of expenses." Uncle Li sighed, and could see that this was the way Uncle Li expressed his happiness.

Uncle Li was very happy and rewarded all the working people involved in this crossbow tool reform.

In addition, Uncle Li waved to keep me. Squatted across from Uncle Li, looking at the man with a very flashing gaze, what did he want to do?
Chapter completed!