Hearing that a school was going to be set up, Zhang Mazi built the necessary seats and benches at an astonishing speed. The women also helped with the cleaning energetically. Who doesn't want their children to be literate? This has been the case for generations.

Their wish has now come true. Many people are very lucky to be able to come to Pidao.

On a sunny morning, Comrade Mao Wenlong, the principal and teacher of Pidao No. 1 Primary School, officially took up his post. Principal Mao delivered an impassioned inaugural speech. Although the children below went crazy, he still insisted on his speech.

until……!

"Quiet!" Xiaobai landed on the table and roared with a loud voice.

All the children were quiet, and they looked curiously at the white crooked-billed bird in front of them. Some of the bolder ones wanted to rush over eagerly.

Xiaobai, who is not afraid of cats, will naturally not be afraid of these children. He took off like a bomber and pecked hard with his sharp beak. One child's head began to bleed! The child who was hit by the air was stunned for a moment and cried.

The sound makes people’s ears hurt!

Xiaobai seemed to be a born leader, and he seemed to know the principle of killing a chicken to scare the monkeys. When he landed on the desk again, all the children looked at him in fear.

Except Xiaoyu!

Li Xiao looked at the bird in front of him in surprise. He suspected that this thing had a human heart under the skin of the bird.

Mao Wenlong fed Xiaobai a small dried fish in a familiar manner, and then continued his speech.

When did this old fox bribe Xiaobai? Just with Xiaoyugan? This guy was too prepared for a rainy day! Now Li Xiao regrets a little and handed the children over to this old guy. What if he teaches a group of little foxes...

!

Finally, after Mao Wenlong finished speaking, Li Xiao planned to go find Mr. Yu. Today he had to discuss the matter of guns and bullets with Mr. Yu. Winter was coming. It was a good season for robbery again. The Tatars were going to Ming Dynasty to rob. Li Xiao planned to go to rob the Tatars.

There are now thousands of people on the island eating, drinking, and eating. They also need to purchase various supplies, and the expenses are not a small amount. Obviously, it can't be covered by just a little soap business.

What else can make money faster than robbery? Li Xiao likes this shortcut to get rich quickly!!

But before he could go out, he was stopped by Mao Wenlong.

"Just leave like that?"

"What else are you doing?" Li Xiao didn't understand why Mao Wenlong still called him.

"What are you doing? Just teach with your mouth!"

"How can you teach if you don't teach with your mouth?" Li Xiao asked in surprise, not understanding what the old guy meant.

"You must tell me that there must be books in the school. Now the children are still young and can write on the sand table. But in the future, there must be paper and pen. Do you think you can teach students just by having tables, chairs and benches?"

"Uh...!" Li Xiao really hadn't thought about this. Mao Wenlong was right. Teaching students always requires books!

"This is the book list for purchase. Get it to me as soon as possible." Mao Wenlong put a piece of paper into Li Xiao's hand.

"You can teach students to write first!"

"How to teach? I wrote the words on the wall?" Mao Wenlong stared at Yunhao and said angrily.

The snow-white walls are all painted with white ash, and they look clean and translucent. Who would want to write on them?

Li Xiao had no choice but to lead Mao Wenlong into the classroom. This guy probably had never seen a blackboard, let alone how to use chalk.

What a bumpkin!

He picked up the chalk and wrote the character Li on the blackboard, and then wrote the character Mao, and then erased the words with the blackboard wiper. Mao Wenlong watched in surprise as Li Xiao erased the words on the blackboard. He didn't expect Li Xiao to have such a talent.

One hand.

Take a piece of chalk and write your name on the blackboard, then erase it with a blackboard eraser.

Have fun with it!

Ignoring the old guy, Li Xiao quickly came to Mr. Yu. The old guy must be impatient!

The experiment with nitrocellulose bullets was finally over. Ao Canghai filled the gun chamber with the amount of black powder. Nitrocellulose, which is much more powerful than black powder, would naturally explode the gun chamber. Even with Yu Lao's advanced technology

After being produced, cracks will still appear in the barrel after firing dozens of rounds.

In fact, with the introduction of nitrocellulose, fixed-load ammunition can be made. This is the bullet of later generations!

But in these days, there was no mechanical processing equipment at all, and there were no machine tools of any kind. Li Xiao could not produce a tightly closed and strong barrel.

After many experiments, I finally found the appropriate amount of charge. Today, the old man Yu wanted to show Li Xiao a kind of broaching machine. Li Xiao mentioned the rifling matter to the old man a few days ago. The old guy kept it in mind, and

Inafumi tinkered for several days and finally built a broaching machine.

There is an iron rod fixed on the broaching machine. There are threads cast on the rod. When the rod moves forward and backward, the thread must pass through a fixed card door on the broaching machine. The rod can rotate at a constant speed under the action of the thread and the card door. There is a screw inlaid at the end of the rod.

The steel ball is inserted into the barrel of the gun. Multiple layers of thick paper can be placed under the steel ball. By thickening the paper a little bit, the protrusion of the steel ball can be gradually increased to grind the inner bore of the barrel, and the rotating rifling can be grinded little by little in the barrel.

.

The best rifling measured by later generations is exactly 360 degrees of rotation from one end to the other according to the length of the barrel.

Li Xiao also requested the same, and it seems that Mr. Yu has already figured it out.

"This is the thing that can pull out the thing you mentioned on the barrel. But I got a gun to try, and it seems that the steel ball has no power when shot out. And the power is a little smaller!" The old fisherman held the rifle and said to

Li Xiao said.

Li Xiao's head almost shut down and he fired steel balls from his rifle. How fucking powerful could this thing be?

But this can’t be blamed on Mr. Yu, he is just a head craftsman. Yunao Inatomi is old and has enough experience, but his innovative spirit is seriously lacking. I hope these two are self-taught and know what air resistance is.

?

"In the future, bullets will not use steel balls, we will use this." Li Xiao drew an original Mini bullet cross section on paper. In fact, this is a hollow cone, very similar to the bullet heads of later generations.

"This kind of bullet can shoot farther, and the caliber should be slightly smaller than the bore. In this way, when the gunpowder explodes inside, the bullet will expand and move along the barrel. The rifling on the barrel can make the bullet rotate. In this way, the bullet

The accuracy will be better." Li Xiao began to instruct the two of them on the benefits of mini bullets.

Daofuyou, who could already understand some Chinese, nodded frequently and was very interested in this new type of ammunition. Li Xiao's concerns about production standards were ignored by the two old guys. After driving Li Xiao out, the two old guys

The glass was whispering in the room.
Chapter completed!