? Ever since I met the mutant grassland land otter in the Tribe, Ye Xi has been thinking about what kind of weapon can effectively kill this behemoth.

They are too large, bone knives and spears pierced on them like thorns on the body, not painful or itchy, and even the venom onset is extremely slow.

Make gunpowder?

However, it is not just that you can make a super cannon or a super bomb just by knowing the composition ratio of a black powder.

After thinking about it for a long time, Ye Xi finally chose the ballista-this masterpiece of the cold weapon era.

The ballista, more precisely, the torsion spring ballista, is a lethal weapon that relies on a torsion spring to drive the crossbow arm to drive the bowstring. It has a huge impact and accuracy, even if it is hundreds of meters away, it can accurately penetrate the enemy's body through the armor.

Of course, its structure is also more complicated, and Ye Xi only read it by chance while reading history books, and did not study it in depth, so it is not an easy task to make it.

After drawing the general structure of the ballista, Ye Xi held the charcoal pencil and lowered his head to repeatedly modify, modify, and modify on the parchment scroll.

From day to night.

In the faint candlelight, the size of the main beam, bracket, torsion spring group, slot, ratchet, winch... and other structures of the ballista were finalized one by one.

Ye Xi took the blueprint and walked out of the house. He gathered more than thirty people including Pingyao, Boshan, Lujia, etc., and formed a team specializing in making ballistas, and made them all.

Half a month later, the first giant ballista was born.

This giant ballista is five meters high and the main material is curved black wood. Its power is amazing. It can shoot stone bullets weighing up to fifty catties and accurately hit an elk running 300 meters away, smashing the internal organs of the elk Away from the body.

But this is not enough. This is a wild prehistoric world. What they want to kill is not an elk, but a huge super giant like a mountain. The power of the ballista needs to be further strengthened.

Seven days later, the second improved version of the giant ballista was born.

This giant ballista is larger and requires four people to operate it together. It no longer uses the torsion force generated by the large hyena’s mane as its power, but instead uses the tendon of the more resilient barbarian cattle.

More importantly, it is a ballista specialized in projecting giant bronze spears. The diameter of the torsion spring and the length of the spear body have been carefully calculated, which can more accurately project the giant spear.

This time, the giant bronze spear projected more than 500 meters away, successfully hitting the elk while running, and penetrated the five-centimeter-thick stone slab tied to the elk, killing it.

Everyone cheered.

This giant ballista was awe-inspiring both in terms of power and accuracy.

They had never thought that there would be such a powerful weapon before! Moreover, this ballista does not need to be operated by soldiers, only a few ordinary people can drive this killing machine!

If another giant beast attacks Xicheng, maybe there is no need to curse the witch!

However, in the thunderous cheers, Ye Xi didn't have much joy on his face. When everyone stroked the ballista in amazement and tried to shoot again, Ye Xi quietly left the test site.

The ballista test was conducted in secret, and the test site was in a deep forest a few miles away from Xicheng.

Pingyao was the first to notice Ye Xi's departure, and immediately chased up: "Master Xi Wu, is there something wrong with this ballista?"

Ye Xi stopped and said truthfully: "The speed of the bow is too slow. If the behemoth attacking Xicheng is fast, then it will rush to our eyes before we attack with the ballista!"

Pingyao froze.

Yeah...how did they forget this.

Ye Xi rubbed her eyebrows and said, "If I think about it, please think again. If you have any suggestions for improvement, please report to me at any time."

Primitives are not good at designing this kind of complicated equipment, so the design of the ballista basically relies on Ye Xi alone, and his work over the past few days has made him a little tired and irritable.

Back to Xicheng.

Ye Xi walked slowly along the stone road, and found that he was still impatient, so he jumped into the star lake with a puff.

He stretched his limbs to swim in the lake, and the clear water slowly eased his anxiety and fatigue.

After his brain calmed down again, Ye Xi even caught a beautiful big fish leisurely and walked onto the lakeshore with its tail.

"Master Xi Wu!"

On the way to the public fire cook with the big fish, Mink suddenly found Ye Xi.

Ye Xi: "What's wrong?"

Diao saluted and paused before slowly saying, "Master Xi Wu, I am here to say goodbye to you. I want to leave Xicheng and walk elsewhere."

Ye Xi was startled: "Why do you want to leave suddenly?"

Mino: "I want to become stronger, I want to find the source stone, but the source stone around Xicheng has been searched, so I can only search far away."

is it?

Ye Xi stared at his face in silence.

Mink lowered his eyes slightly.

Ye Xi knows that Mino has always had a hatred for the Heize tribesmen, and this hatred cannot be smoothed even with time. He often targeted the Heize tribesmen during hunting, provoked them, and even killed no less than five Heize tribes by different means people.

For the sake of the Langya tribe, all of these Ye Xi closed one eye.

Unexpectedly, Diao still couldn't calm the resentment in his heart, to the point where he didn't want to stay in Xicheng.

Ye Xi: "Do you really want to leave?"

Diao raised his head and said, "Yes, don't worry, I will come back when I find the source stone. Xicheng is always my home. There are my people and friends here, and I will come back!"

Ye Xi was silent for a long time and sighed, "It's fine, you can leave, but wait a few more days."

Diao hung his head and said, "Okay."

Because of the news that Mink was leaving the city, Ye Xi could only temporarily put down his ballista research.

Mink is now a fourth-level warrior, and his strength is not low, but he is not enough to see in the wild land full of dangers. It may be unexpected after he has walked a few hundred miles.

So he wanted to make the hidden dominoes.

Ye Xi just started to make the hidden dominoes, and Ze of the Tree Human Race suddenly went to the door and said that he was leaving Xicheng.

Ye Xi rubbed his temples and laughed angrily: "Why do you want to leave too?"

Ze keenly caught the word again: "Who else wants to leave?"

Ye Xi kept silent ~lightnovelpub.net~ just looked at him like that.

Ze hurriedly bowed and said, "Master Xiwu, please forgive me, it's really because our patriarch of the tree human race is about to be unable to hold it! I must go outside to find another tree human race that has been lost, get the birth crystal, save The patriarch of Hui."

Ye Xi: "Do you know about this?"

Ze: "The great witch knows, he agreed."

What he didn't say was that the Great Wizard of the Tree People originally disagreed, but seeing that the situation of the patriarch of the Tree People was really bad, he reluctantly agreed, but he still didn't want Ze to go personally.

Ze fought for a long time before the tree-human tribe witch reluctantly nodded.

Ye Xi: "In this case, I won't stop you. You can wait a few more days before leaving. Then, you will start with the mink from the Tushan tribe, and you will have a company."

"Yes!"

Ze didn't have much contact with the Tushan tribe, and they didn't know Diao. He just responded, and there was not much surprise in his eyes.