Solve the first problem first.

From a structural perspective, conventional bows and arrows accumulate mechanical energy through the [single-point stretching] of the bow string, which causes the [two-dimensional deformation] of the bow body, thereby achieving the purpose of ejecting the archer shaft.

Therefore, the single-point stretching of the bow rope determines that a bow can only fire one arrow.

In order to fire a bundle of arrows, Lu Wei opened his mind and decided to create one-

Three-dimensional umbrella bow!

What is a three-dimensional umbrella bow?

To compare, the shape of a two-dimensional bow (ordinary bow) is an approximately circular arc, so the three-dimensional umbrella bow is probably the shape of an umbrella.

The string of a two-dimensional bow is a one-dimensional line segment, so the string of a three-dimensional umbrella bow is almost a layer of elastic circular film fixed to the umbrella opening and sealing the three-dimensional bow.

When ordinary bows and arrows pull the strings, the [single-point stretching] is upgraded to [round-side stretching] on the three-dimensional umbrella bow. Since it is round-side stretching, a circular area can be drawn in the center of the round surface to fix a bundle of arrow shafts, and then stretch and launch!

In this way, the problem of stably launching a bundle of arrows is solved.

.

Coming to the second question.

Now Lu Wei is already terminally ill, weak and weak, and he is already out of breath when he pulls an ordinary bow and arrow. Where can he get the strength to pull the newly designed [3D umbrella bow]?

The answer is leverage.

Archimedes once said: "Give me a fulcrum and I can pry the earth." Of course, a fulcrum is not enough, he also needs a lever that is long and hard enough!

If Lu Wei wants to pull the three-dimensional bow, he also needs the power of leverage.

By printing the spine of the giant python, Lu Wei can get a lever that is long and hard enough. With two transmission gears, the power of the rotating lever can be easily converted into the power of the bow drawing!

The second problem is solved easily.

This is the principle.

Lu Wei began to model—

[Three-dimensional bow body]: height 1m, printed by the calf bone of the Eight-Leaded Mad Python. The calf bone of this [Eight-Leaded Mad Python] has a terrifying toughness and elasticity, which is completely suitable for creating a large elastic bow body.

[Round Bow String]: 2m in diameter, a uniform film is printed from the giant python skin and fixed to the umbrella-shaped bow.

[Trigger pulling area]: 30cm in diameter, printed on the stone plate, can support a bundle of arrow shafts.

[Trigger lever]: about 1m long, with two transmission gears that are perpendicular to each other. Another fixed tie is designed to rotate the lever in advance to accumulate force. When fighting, you can directly remove the fixing bolt and shoot arrow rain!

[Arrow shaft]: The arrow is 50cm long and 0.3cm thin. It is printed by a stone embedded in the snake bone. The stone is to increase the weight of the arrow shaft, improve the range and accuracy.

[Arrow]: 5cm long, with resistance pushing plug inside, automatic injection design, as long as the arrow breaks the skin by 1cm, a large dose of snake venom can be injected, which is printed by a mixture of snake bones and stones.

.

at last--

[-Output-]

The space suddenly turned, and a slightly bloated but domineering [three-dimensional umbrella bow] appeared in front of Lu Wei... This may be the first in human history-

Three-dimensional bow and arrow!

One hundred arrows full of snake venom were tied together and ready to go; a long rotating rod was waiting for the rotation of Land Wei...

Without hesitation, Lu Wei immediately turned the lever and rotated it for nearly a hundred times, which allowed him to gather enough mechanical force to fire the arrow rain.

Just as he removed the fixing bolt and tested a wave of arrows, he suddenly heard a girl shouting "Help" not far away, so he quickly ran closer to see-

A group of black wolves are besieging two human players!

...

After putting the umbrella bow into the space, Lu Wei carried the printer on his back and ran over quietly along the sound. When he approached the sound of help, he hid in the nearby thorns and observed quietly.

A hundred meters away from him, there is a small earth slope.

It was not an ordinary earth slope, but a earth slope made up of countless wolf corpses.

On the soil slope, two young women dressed up in the dress were tightly surrounded by a group of black wolves and could no longer break through easily.

One of the women held a sword against the wolf.

Another woman hid behind the sword-holding woman holding the camera.

"Isn't this Chen Yuhan?"

Lu Wei wondered.

As a beautiful secretary, why did Chen Yuhan come to the novice jungle to hunt in person?

Chen Yuhan stood firmly on the top of the slope.

As she kept waving her sword, the black wolf was continuously cut off the earth slope...

Chen Yuhan has super powers [the combination of human and sword], so his slender bones can not be afraid of wolves, and he continues to take drugs to replenish super energy.

But unfortunately, the black wolf was too numerous and continued to rush up the hill, and even some black wolf jumped off the branches above her head and fell and rushed towards her.

now--

Chen Yuhan is invincible. His delicate face is already sweating, and his slim body is covered in scars. Depending on the situation, he can only last for a minute or two.

The woman holding the camera hid behind the sword-holding woman, never showing any superpowers, and would only shout help...

Fortunately, calling Lu Wei was considered a contribution.

.

Lu Wei's eyes did not stop for the two of them for a long time. He just swept over and turned his head to look for the [Super Power Wood] they were preparing to hunt.

Suddenly my eyes lit up!

On the east side of the Wolf Corpse Tupo, a withered yellow plant stands out in the vast jungle like a crane standing in the vast jungle. When Lu Wei looked carefully, it was not a tree, but a tree.

Giant grass!

Is this OK?!

Lu Wei felt like a grass was lying in his heart.

At this time, the printer received official information about this giant grass.

[Ding-—Official information: [Tagtian Giant Grass], a level 9 super-powered wood, the guardian beast is a level 9 super-powered beast [Thousand-winged Flying Centrifuge]. For your safety, please do not approach [Tagtian Giant Grass] before you are sure to defeat [Thousand-winged Flying Centrifuge].]

"Thousand-winged centipede?"

Lu Wei rubbed his eyes and looked around the earth slope.

There is no shadow of [Thousand-Winged Flying Centipede] at all!

There were only a few dozen black wolf still attacking the two women, as well as hundreds of wolf corpses piled up into earth slopes, and these black wolf was just the most common level 1 super beast in this jungle.

Where to go [Thousand-Winged Flying Centipede]?

This is simply unscientific!

"Is it related to Chen Yuhan..."

When Lu Wei thought about this, he silently took out the three-dimensional umbrella bow, pulled the fixing bolt with a click, and shot an arrow towards the direction of the earth slope!

"Bang!"

The huge mechanical force accumulated by hundreds of bow drawings was instantly released, and a burst sound that was very different from that of traditional bows and arrows burst out.

A bundle of bone arrows shot out with a bang!

Then it turned into a whirlpool rain and fell one by one to the ground!

Because Lu Wei's arrow shooting action did not consume any superpowers, it was difficult to detect in advance. In addition, the arrow speed was too fast and the range of arrow rain was large. When the wolves and the two women heard the sound, they had already avoided it...

The rain of arrows fell, instantly passing through the body of the wolves, and even pierced through the corpses of the black wolf on the ground, and finally entering the soil.

The bone arrow printed by Lu Wei is extremely thin. Even if it shoots through the wolf's body, the physical damage caused is just like a mosquito bite to the [super beast] black wolf.

However, while shooting through the wolf's body, the automatic injection tether on the arrow was automatically opened, and the snake venom of the [Eight-legged Mad Python] full of tubes was injected into the black wolf's body!

This is a very poison from the level 2 super beast [Eight-legged Mad Python]. How can a level 1 black wolf bear it?

In a moment, ninety percent of the black wolf fell down by an arrow, wailing and wailing!

The remaining black wolves who survived were either killed by Chen Yuhan or attacked Lu Wei, and were split by Lu Wei with a sword...

At this point, the black wolf was wiped out!

.

However, this was an indiscriminate attack. Chen Yuhan was also unable to avoid the attack of Arrow Rain and was shot into the chest and ribs with an arrow, and blood oozed out!

Fortunately, Chen Yuhan, as a level 5 superpower, was dizzy for a few seconds when facing the snake venom of level 2 [Eight-legged Mad Python]. Then he quickly recovered and frowned vigilantly:

"Who is it?"

The other camera woman hid just right beside the woman holding the sword, not being affected by the arrow rain. At this moment, she instinctively aimed the camera at the arrow rain's arrival.

"Let's see which hero saved Mei?"

Lu Wei immediately appeared in the camera.

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Preview: No. 0010, I'm not here to pick up girls
Chapter completed!