Ye Feng once again exerted his plagiarism skills, and the picture was drawn by Qin Yu.

Qin Yu, its power is far greater than the traditional bow and arrow.

With the level of science and technology at that time, the accuracy of Qin crossbow manufacturing was very high, and it is no exaggeration to say that he was like a modern rifle.

The biggest difference between a bow and an arrow is that it can hold the bowstring to the body of the bow for delayed firing.

This allows the launcher to aim accurately without the need for a strained bowstring, improving the hit rate and saving the shooter's physical strength.

Tree Root Boy carefully observed this drawing, and suddenly pointed to the back of this donkey and said, "Ye Feng, what is this?" ”

Ye Feng looked at his fingers and said with a smile: "Let me tell you, this thing is the most difficult part of this donkey to make, it's called the donkey, although it is difficult to do, but correspondingly, its role is very large, don't underestimate it!" ”

Ye Feng did before, the way to fix the bowstring is very primitive and backward, that is, to cut a horizontal groove in the back of the bowstring, when pulling the string, it is to hang the string in this horizontal groove, when you need to launch, directly use your fingers to push the string up, and the potential energy accumulated by the curved arm will drive the bowstring to launch the arrow.

One of the drawbacks of this is that the action of pushing the finger up will cause a slight deviation of the body, thus reducing its accuracy.

It's not a big deal, it's a big deal to miss a shot, especially during the journey, there are some scratches, and the bowstring is very easy to get out of the groove.

It's very bad, it's okay if there's no one in front of you, if the players are in front......

So, on the basis of the original, Ye Feng added the component of the crossbow machine.

The machine, which is equivalent to the trigger of a rifle, is designed to amaze modern people.

This thing uses the principle of a lever to buckle the bowstring to the body, and it doesn't take much effort to pull it.

In this way, the accuracy of this donkey has been raised to a higher level.

In order to make such a machine, the requirements for accuracy are still relatively high, and it is indeed a little difficult.

The root of the tree couldn't help but have a toothache, and said, "Ye Feng, can you not do this?" ”

Ye Feng rolled his eyes and said, "I worked hard to send it out, and each part is very clearly marked, do you say you can do it?" ”

Shugen smiled awkwardly, then pointed to the arm on the picture and asked, "Then what kind of wood is this mulberry wood?" ”

Speaking of this mulberry tree, Ye Feng had a lot of resentment about it.

Some time ago, Ye Feng saw that the wood that the hunting team casually cut to carry the prey turned out to be mulberry wood.

Seeing the mulberry wood, Ye Feng naturally thought of silkworm reeling, and thought of silky silk.

Before the crossing, Ye Feng was a dick, and he had never touched this high-end gadget at all, at most he had bought a high-end imitation on a certain treasure.

Finally, there was a chance to make contact, and Ye Feng would naturally let it go.

The next day, he excitedly led people to the place where the mulberry wood was found, hoping to find silkworms nearby.

But the truth hit him hard, and they were busy all day, and they found no trace of silkworms.

I found a lot of ugly caterpillars and other small bugs.

In the end, it was not without harvest, it was the season to receive mulberries, but they also received a lot of mulberries.

However, no matter how delicious the mulberries are, they are not what he wants!

Regarding this "unbearable" past, Ye Feng didn't want to mention it just a word, but only mentioned it slightly: "This is a kind of wood that is very suitable for making this crossbow arm." ”

Seeing that he didn't want to mention it again, Shugen couldn't help but wonder in his heart, but he didn't ask more, just continued to ask questions on the topic of this arm: "I think this arm is very different from the past, how can I do this?" ”

Ye Feng pointed to the drawings and explained: I designed this arm into a flat shape, with a length of ...... Well, between 130~145 cm. Be sure to wrap it well with a dense strip of leather on the entire arm! ”

"Pimp?" The root of the tree said with a puzzled face, "Then why do you want to make a pimp on it?" ”

Ye Feng explained very patiently and said: "Of course you have to get a leather strip, it can not only strengthen the strength of the leather arm, it will not be so easy to break, but also with the help of the excellent toughness and strong elasticity of the leather strip, it can make the leather arm have greater strength, shoot farther, and be more powerful!" ”

Listening to the explanation, the roots of the tree gradually became transparent.

He yelled excitedly, "Good! This kind of design is really good, Ye Feng, you really deserve to be a great wisdom! ”

No matter how thick-skinned Ye Feng was, he couldn't help but blush, after all, this was not from his masterpiece, it was directly copied from later generations, and he was just a porter at most.

The only thing that makes him regret is that the tribe has no lacquer yet, if it is painted with brown lacquer on the outside, it will not only look mighty and beautiful, but also waterproof, insect-proof, mildew-proof, etc., and will not be afraid of the damage of the rain when fighting on rainy days.

The two discussed this topic for a long time, and it was not until sunset that they stopped.

Shugen looked at this drawing and said, "Ye Feng, I know all your thoughts about this beast, at most half a month, I will definitely be able to build it!" ”

Ye Feng drank a glass of water and moistened his throat, without a trace of doubts about what he could make in half a month.

Because he knows the workaholic character of the roots too well, and once he wants to build something new, he will never stop.

Half a month or something, he will definitely work overtime to build, and it is not impossible to build it in such a short time.

But for this bow and crossbow, Ye Feng was not in a hurry, after all, the "special forces" that will be formed have not yet appeared.

So he said bitterly: "Old tree, I'm not in a hurry to ask for this donkey, you can build it slowly, or pay attention to your body!" ”

After thinking about it, Ye Feng felt that he might not be able to listen to what he said, so his face turned blank and said solemnly: "I am an order, don't be the wind in your ears!" I'll give you a one-month deadline, and if you deliver it even half a day early, then you will be punished! ”

The root of the tree was his most powerful assistant besides Chu Yun, and he didn't want the root to suddenly die on the workbench one day.

Although Ye Feng's words were very evil, the roots of the tree knew that it was all for his good.

A warm current lingered in his heart for a long time.

He nodded gratefully and said, "Ye Feng, I know, I will do it in a month." ”

Ye Feng said with satisfaction: "Okay, it's good that you know, it's getting late, you can go and rest quickly!" ”

To be continued

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