Duan Mingyu couldn't help but be happy when he felt the crisis of the ballista, and looked at the ballista as if he saw his own son: "Master Fan, take my son... Not... The ballista test shot an arrow, let me see how powerful it is! ”

"Okay, Childe, you'll take care of you!" Fan Fu waved his hand with confidence, and immediately several people carried two giant trees and walked into the distance.

After walking a distance of about three hundred steps, several people stood on the giant tree on the ground, and then ran back.

Fan Fu took out a long arrow that was almost one and a half meters long. Duan Mingyu looked at this arrow in surprise, the general arrow is composed of three parts: arrowhead, arrow shaft, arrow feather, arrow, also known as arrowhead, mostly iron, the head is sharp and the bottom is abundant, the style has a trilogy, triangle, cone, etc. Its blade is thin and sharp, with grooves on the sides. The shaft is made of wood or wood, embedded under the arrow. The shaft is cylindrical and made from the end of the arrow. The arrow feathers are often made of the wings of giant birds such as the Penghu, and are clamped to the tail end of the arrow shaft, so that the arrow can hit the target smoothly in flight.

The arrow in Fan Fu's hand is a bit special, the whole body is made of iron sheets, and there are no arrow feathers. Saying that it is an arrow is lifting him, except for the arrow, it is not like an arrow at all, this is a living gun, what surprised Duan Mingyu the most was that there seemed to be a lead at the end of the arrow shaft.

Duan Mingyu asked, "Master Fan, your arrow seems to be a bit different."

"Childe really has good eyesight, my arrow can have a big way, this arrow is made of iron wrapping and pouring, the arrow shaft is hollow, according to the explosives formula that Childe handed me a few days ago, the small one is specially equipped with explosives in this arrow shaft, Childe please look at this lead, as long as you ignite it before launching, hehe, after the arrow is shot, it can not only shoot the enemy, but also rush into the military formation with explosives, tsk, explosives and iron sheets, the lethality can be described as a double superposition! Hahaha. Fan Fu stroked his beard with satisfaction, and talked proudly.

Luo Hou said: "Master Fan, Luo has also been a soldier for a few years, although he has not studied this combat machine, but he also knows that the heavier the mass of this arrow, the greater the firing power required, can your ballista provide such a great force?"

Xu Zuye also echoed: "Yes, besides, this arrow crossbow cart is cumbersome, it is not easy to adjust the direction, and the battlefield situation is ever-changing, how can there be time to move such a major ballista?"

"Hehe, Luo Jiaoxi, Brother Xu doesn't have to worry too much, I am a craftsman, these situations naturally have to be dealt with thoroughly, otherwise it will not harm the lives of my brothers, please see, my ballista is quite different from other ballistas, my ballista uses three strong iron springs to supply force, in addition, I also added eight cow tendons, through the tension of the spring and the torque of the cow tendons, it is enough to ensure the force of the launch, in addition to this direction problem, although Fan can not move this ballista, but in front of the ballista hung eighteen iron hooks, Used for the positioning and direction of the arrows, haha, what else do you two have to say? Fan Fu once again boasted arrogantly, which can be regarded as overjoyed.

Luo Hou and Xu Zuye arched their hands in unison: "I'll wait for my heart!"

Duan Mingyu snorted: "As the saying goes, there is a precedence in hearing the Tao, and there is a specialization in the art industry, so you don't have to feel inferior to yourself for this, come, Master Fan will try an arrow for us first!"

After Duan Mingyu finished speaking, he pulled Wan Yanyan out of the distance and immediately blocked his ears.

"Wait for me!" Yang Zhaoniang hurriedly followed the two and hid to the side.

Luo Hou and Wang Aiqing, Xu Zuye, and Xie Xiande, who had just arrived, also flashed far away.

After Fan Fu signaled that the crossbowmen waiting on the side could start, he also slipped away very unjustly.

The two crossbowmen skillfully loaded the arrows, surveyed their directions, hung the arrows on an iron hook slightly to the left in front of them, took out a box of newly invented matches, lit the fuse, and then pulled the firing mechanism.

Everyone saw the long arrow dragging a "whoosh" of black smoke, and shot straight out with lightning speed.

With a "poof", the long arrow was inserted into the two giant trees, and everyone could just see the exposed tail of the arrow, and the arrow just poked out from the other side. Immediately after that, there was a loud "boom", and the giant tree was blown up to the sky.

"Hiss" everyone took a breath of cool air.

Looking at the location of the giant tree, a large pit with a diameter of four meters has been formed.

Duan Mingyu said in surprise: "This, it's too NB!"

Fan Fu stepped forward and said, "Childe, are you still satisfied with this power?"

Duan Mingyu's head nodded like a chicken stewed with mushrooms... Not... The chick pecked at the rice: "Satisfied, quite satisfied!"

"But Master Fan, how many branches can you send out on this ballista at a time?"

"Eleven, what's wrong?"

Duan Mingyu coughed and said, "I thought the repeater crossbow you mentioned was a small bow and crossbow used in individual combat, but I didn't expect Master Fan to give me such a big guy."

"Oh, Childe is talking about this problem, the small repeater has been built a long time ago, Childe, you see." Fan Fu took out a crossbow as if he were juggling.

Fan Fudao: "The cross crossbow has the length of an arm, it is very suitable for individual combat use, and it can be fired fifteen times in a row, I follow what Gongzi said, each crossbow is made according to the template, and every time the parts are broken, they can be replaced at any time." After Fan Fu finished speaking, his fingers kept pulling the trigger, and fifteen arrows were shot on the ground neatly, and the small arrows were halfway into the ground, and the strength was not strong!

Duan Mingyu opened his mouth happily, hehe, Lao Tzu's pistols and cannons are all there!

Fan Fu said at this festive time: "Childe, this crossbow is easy to make, but this crossbow is not easy to make, because the power of the crossbow is too strong, nothing can connect its various parts together, so it must be completely manufactured, and if you make a mistake, you have to start all over again, and the quality of this ballista is bulky, and it can't be used for long-distance running, this is a problem!"

Duan Mingyu laughed, and patted Fan Fu's shoulder: "Master Fan, if this matter is not a big deal, you can use screws and nuts to connect the various parts of the ballista together, so that you can use assembly operations to produce various parts, and then fix them with screws and nuts, hehe, so that the ballista can also be disassembled and assembled at any time, and the soldiers each carry a part of the parts, and it will not be a problem to run long distances."

"Childe, I don't know what this screw and nut is, why Fan has never heard of it!" This skilled craftsman who is committed to scientific research asked Duan Mingyu modestly.

"Well, these two gadgets are made up by me when I have nothing to do in my daily life, the screws are like the men's things, the nuts are like the women's things, as long as the spiral patterns are engraved between the two, they can be combined seamlessly, no matter how hard you try, you can't separate." Duan Mingyu wiped the saliva from his mouth, "Do you understand?" ”

"The subordinates understand, I don't know what Childe means......"

……

Brothers, it is rare to seal and push, full firepower, rush, flower tickets, all the orders! Stone me to death, friends who don't collect it, hurry up and drop! There is a small JJ of the wood which I do not collect