I think Li Shimin would give it to him, because Li Ke was in charge of the guards in his village.

This is what Li Shimin reassured most.

Is Li Shimin really at ease with himself?

This may not be necessary. Li Jiangshan was placed in Jingyang and was considered Li Shimin's eyes.

He has never felt at ease with me.

No matter how he develops, Li Shimin's persecution paranoia will remind him to guard against everyone.

Li Ke picked up the crossbow again and looked at the bowstring and said discouragedly: "How can this bowstring be used to train soldiers when it is loose?"

"Of course this kind of bow can't be shot far, and your loose power will not be much power transmitted to the arrow." Li Zheng looked at it and said, "This kind of bow is not good for hunting."

"Do you still understand the bow?" Li Ke said in surprise.

"I don't understand." Li Zheng shook his head vigorously.

Li Ke still looked at Li Zheng suspiciously.

Looking at Li Ke's frowning expression, Li Zheng said, "Okay, I've called it, I really don't understand the bow, but I've seen a kind of compound bow."

“Compound bow?”

"Your father said we could give us five hundred soldiers' weapons, but we didn't say what kind of weapons it was. As long as we equip five hundred people, we can do it, right?"

Li Ke nodded, "That's true. According to the emperor's wishes, there are only 500 soldiers in Jingyang with armor."

Li Zheng used a branch to draw a compound bow on the ground, saying, "In fact, the compound bow focuses on a kind of mechanics. The principle of a bow and arrow is the transfer of power, but this transfer is actually consumed. If you use the power of ten stones, the power you shoot out may be only three stones."

After Li Zheng finished drawing the outline of the compound bow, Li Ke asked curiously: "Is there a wheel on it?"

"Yes, the advantage of the composite bow is to reduce the consumption of power when it is transmitted."

Li Ke blinked hard, "Sorry, I didn't understand."

Li Zheng came to the warehouse of the guard team alone and took out a book from the system library, an academic discussion on the development of bows and arrows.

This book records in detail the history of the development of bows and arrows.

After the emergence of muskets in the Middle Ages, bows and arrows became less and less useful.

It has gradually become an obsolete in the war.

It has become an entertainment activity for the noble family to have fun.

In later generations, bows and arrows have long become a type of sports.

The bows and arrows of the Tang Dynasty already have the appearance of recurved bows in later generations.

However, the accuracy and strength of the recurve bow are not as great as that of the composite bow.

Take a bow from the camp, and Li Zheng began to transform the longbow according to the size of the bow in his hand.

Shock absorber, pulley shaft, splitter, bolt.

It is really evil to be backward in knowledge. Li Zheng was so cruel and despised the guys from the five surnames again.

These people only know how to be gentlemen but not develop scum.

Scholars all go to read rituals and music, who will develop?

A complete composite bow cannot be made. In this era when hardware technology has not even developed, it can only be made into a simplified composite bow.

After drawing the parts, Li Zheng had a headache again, and these parts needed iron tools to make them.

Then you need a blacksmith. Li Zheng called Dahu, so he was the general of the Dragon Martial Army.

There are blacksmiths in the army who build weapons.

Dahu knew what Li Zheng was going to do and said with some difficulty: "General Zhonglang, the iron tools in the army are all used to make weapons, so how can they be wasted?"

"What I do is a weapon, I want to be the most powerful bow and arrow in the Tang Dynasty."

Dahu looked at Li Zheng's drawings and said, "General Zhonglang, what kind of weapon is this?"

It is a bit difficult to explain these things to him. Dahu can't tell him that this is a part of the composite bow.

I'm afraid I can't even understand anything if I'm not a blacksmith.

Feeling the disadvantages of backward knowledge and technology, Li Zheng said to Dahu: "These are all things I want to build privately. I, a general of the Central Army, want to build some weapons I use, but I can't do it? There are so many strange weapons in this world. Do you know a weapon with an iron head on a rope?"

Big Hu shook his head, "I don't know."

"That's it, create five hundred pairs to send to me."

"General of the Central Army, this is not appropriate. If one or two pieces are created, it will be fine. If there are five hundred pieces, it will be approved by the Ministry of War, because the iron material must be given to the Ministry of War."

"Then I'll do the iron material myself."

"Okay." Dahu said again: "But it's good that you will have a little benefit fee. This is what the blacksmith wants to collect, the rules."

Li Ke also explained: "It is true. The powerful people in the market want to create things with blacksmiths, and they really need to give some benefits. Not much, just use a few chunks of money."

Li Zheng took out three silver cakes, "These three silver cakes should be enough for 100 cents."

Dahu pulled the ox cart and took away all the five hundred armors in the camp. The iron material used to make parts, and just recast it.

Li Zheng was sure that even if they made parts, the blacksmith did not know what he had made without complete drawings.

"Where is Cheng Chumo?" Li Zheng looked around and asked.

"I'm back to Chang'an." Li Ke said while eating a cake.

It is definitely not possible to use the current beef tendon for the bow string of the compound bow.

The strength requirements for the compound bow require a high degree of strength.

I found some bamboo slices and soaked them in water.

When the fibers of the bamboo slices separated, they became thin lines.

The fiber toughness of bamboo is very good.

Wrap it around the beef tendon to increase strength.

In the palace, Li Shimin was reviewing the memorial, and Wang Ding came with a drawing, "Your Majesty, Li Zheng asked the Longwu Army to build something."

"Is it a horseshoe again?" Li Shimin said without raising his head.

Wang Ding put the drawings in front of Li Shimin, "The blacksmith of the Longwu Army couldn't understand what this was, and it was said to be like a toy."

Li Shimin took a look at the drawings, and could not see any eyebrows even when he was frowning.

Wang Ding said again: "It was said that Li Zheng recast all the soldiers and armors of the 500 soldiers sent by His Majesty. To build this thing, the people from the Longwu Army came to report immediately and asked His Majesty to decide."

"It's just a few small things."

Wang Ding said again: "According to Li Zheng's words, five hundred pieces should be created each."

"He's just ruining the armor I gave him?" Li Shimin smiled coldly and said, "Just do what Li Zheng said and let him go."

"Here."

After Wang Ding sued his leave, Li Shimin lost the intention to review the memorials again.

All five hundred soldiers and armor were recast.

I don’t know that this kid looks down on the armor he gave him.

Or he doesn't want to form his organization at all.

I went to see it a few days ago, although those people were just some villagers.

But the training is quite satisfactory.

It would be a pity if Li Zheng didn't pay attention to it.

For three consecutive days, Li Zheng has been making bowstrings for the compound bow.

In this era when there were no high-strength polyethylene materials.

If you can make do, just make do.

Use bamboo fiber, hemp rope and beef tendon to wrap it into the thickness of chopsticks.
Chapter completed!