I rebelled in the Song Dynasty

Liu Sheng lived directly in the artillery casting workshop, staying in the workshop day and night and discussing with several craftsmen.

Wang Tiezhu proposed: "It is better for generals to use iron cannons than to use copper, and it is faster."

Liu Sheng refused. Although copper has better ductility than iron, because its material is not as hard as steel, it will heat up after a few shots. More importantly, copper is heavier than iron.

Moreover, copper is currency and is needed for trading items. If a large amount of copper is used to cast cannons, Shuozhou's financial system will collapse.

Another craftsman said: "If the general uses sand molds to cast, there will be a lot of air bubbles and sand every time, which is why we gave up pouring.

Liu Sheng was so angry that he clearly taught them a better way, but gave up because of some trivial reason.

Liu Sheng scolded the craftsmen for the first time: "If you give up when you encounter difficulties, what are you studying? From today on, there will be no masters, all are apprentices, and the monthly salary will be halved."

Liu Sheng was a little disappointed.

Just take a step and regard Liu Sheng as a place for retirement?

Perhaps Liu Sheng was too lenient with them, causing them to lose their sense of awe.

Or maybe their thoughts are deeply ingrained and they are simply unwilling to change anything?

I can only do some mindless, physical work.

At this time, a handyman who was lighting the fire muttered to the side: "The sand mold is easy to scatter, why not use refractory clay to burn a model out."

A model can be used for a long time without getting damaged. "

This is something that even apprentices can understand, but a group of craftsmen don't understand.

Liu Sheng waved the fireman over and said, "Do you know what we are going to do?"

The apprentice worker was not afraid of anyone and said directly: "Don't the general just want a hollow iron pillar?"

Liu Sheng's eyes lit up and he said, "Do you have a production method?"

The fireman didn't say anything. He just brought two wooden boards and said, "How about hollowing out these two sides and exposing a small hole on them to pour molten iron down directly?"

Liu Sheng looked at it without disturbing him. A craftsman came forward and retorted: "Then what is made is just a solid one with no holes in the middle. Do we still need to drill one out? It is better to drill it to be more solid."

Wang Tiezhu, who was standing aside, also stepped forward and said: "Actually, you can add a cylinder in the middle of the mold below and polish it to get a gun barrel.

Liu Sheng just looked at him without saying anything. All he had to do was show his attitude and reward.

Give everything that should be given.

Sure enough, people still have to push.

The previous problems were solved instantly.

"How to deal with the bubbles that can be generated?" a craftsman asked.

In an instant, everyone beat the eggplant like frost. It was stained with sand and had bubbles after pouring.

Using refractory clay as a model solves the problem of sand and air bubbles.

Liu Sheng thought for a while and said: The bubbles are caused by uneven heating. If the gap is quickly plugged after pouring, and the rapid rotation causes the molten steel to move quickly inside, will the gas inside disappear? "Everyone made 20 molds according to Liu Sheng's request.

Of course, the more cannons, the better, so Liu Sheng stayed in the artillery workshop for three days until they produced a cannon that satisfied him.

It weighs 1000 kilograms and has a range of up to 3000 meters. If the gunpowder is doubled, it can hit seven or eight miles, but if it cannot fire two shots, it will have to cease fire.

Aiming still depends on the naked eye. Liu Sheng is already content. He doesn't expect these craftsmen to bring any technical breakthroughs to Liu Sheng. As long as he can make the finished product according to the drawings he drew, he will be satisfied.

It seems that we have to cultivate some talents ourselves. The Song Dynasty has scholars, and Confucius and Mencius are flourishing. Counting them to develop technology is no different from killing them.

Liu Sheng also asked Mi Xing to recruit a group of homeless people and compile some teaching materials. Let them learn.

He hoped that this group of orphans would be like a spark that ignited the entire land of China.

He left suddenly that day without telling Yu Hui what he was about. Now that he was about to go on an expedition, Liu Sheng felt it was necessary to go and talk to Yu Hui.

The heavy snow that had stopped for half a month started to fall again, making marching extremely difficult.

After walking around the city, I didn't see any stalls in Yujiacun. I must have not gone out because of the snow!

Liu Sheng decided to go out of the city for a walk in the snow and take a look at Yujiacun.

Not long after Liu Sheng left the city, a maid appeared in Qi Ke's room and said, "Girl, General Liu has left the city."

Qi Ke said expressionlessly: "Get your horses ready, I want to leave the city too."

Wu Ze took Mi Xing to buy some things needed for getting married in the city. Suddenly Mi Xing pulled Wu Ze and said, "Look, is the person riding the horse your wife?"

Wu Ze followed Mi Xing's finger to get the direction, wasn't he Qi Ke?

"What happened? I see she seems a little anxious. Go and have a look," Mi Xing said.

Wu Ze threw all the things in his arms to Mi Xing and said, "Send them back for me, and I'll go take a look."

Liu Sheng was not in a hurry. He walked all the way and looked at the scenery slowly.

At this time Niu Da said: "There is someone behind the general, riding a horse. He seems to be very anxious. Do you want to stop him?"

Liu Sheng stepped aside and said, "Maybe others have something to do, so don't disturb them. Let's move aside."

When the visitor came forward, Liu Sheng discovered that it was Qi Ke

"Miss Qi, what are you doing?"

Qi Ke looked at Liu Sheng without saying anything. Liu Sheng sighed and said to Niu Da and others: "You go first, come forward and wait for me."

There was no one around, so Liu Sheng asked, "Miss Qi, what do you want to do? Didn't I make it clear enough that day in Qi Mansion?"

Qi Ke stared at Liu Sheng for a long time and said, "That girl, you like her."

Liu Sheng said without hesitation: "Yes, I like him."

Hearing Liu Shengde's answer, Qi Ke said calmly: "She is not as good-looking as me."

Is Qi good-looking? Skin like cream, eyes like autumn water, nose straight, red lips moist, teeth like jade, charming city, like a dream, these idioms used on Qi Ke will not make people feel abrupt at all, but will make people feel, Because of her, people discovered that beauty in the world is not imaginary, and these words and sentences were written according to her appearance.

Her beauty is breathtaking, especially those eyes that make people dare not look directly into them.

Ice muscles and jade bones, the best in the world, with a smile as bright as a flower, that's all.

Qi is the most beautiful girl Liu Sheng has seen since time travel, and there is no way she can be compared to being unattractive.

Yu Hui is also very good-looking, but Yu Hui's beauty is a combination of her temperament, which is revealed inadvertently when she frowns and smiles. It is more about her experiences that create her beauty.

If it was only a little bit worse than her appearance, Liu Sheng did not hesitate to praise her: "The beauty of this girl is rare in the world, and it cannot be compared with Miss Yu."

Qi Ke said a little crazy: "Then how am I worse than her? You like her but you don't like me."