After careful consideration, Yan Zheng directly selected two medium-quality Daming copper coins as references.

It was decided to design the first copper coin of its own on the basis of these two copper coins.

The style is the same as that of Daming, which is a "round place", and a square hole is used in the middle.

On the denomination, only one, two, and five texts are used, and all of them are designed with numbers and traditional Chinese characters, namely 1 Yiwen, 2 Erwen, and 5 Wu Wen.

There is no Tongbao in the back, only four five-pointed stars are designed in the north, south, east and west.

The edge is made in the shape of a fine gear, which is used to prevent counterfeiting and prevent someone from scraping the edge.

It was also from Qiu Ruicai's narration that he learned how crazy the people of Daming would be in order to have a few more money!

When the people of the Ming Dynasty received good copper coins, they would scrape the copper edge, that is, scrape some copper from the edge.

After designing the style, Yan Zheng handed over the drawings to the mold factory and asked them to find a way to come up with a set of pressed molds.

At the same time, he went to the machine shop and the steel factory, and asked them to set up a minting machine, which had to be able to be driven by a water wheel.

The specific principle is to drive the template of the coinage through hydraulic power, and press it through up and down movement.

The principle is very simple, you only need to go through the transmission facility and a few lever principles, you can figure it out.

The difficult thing is to press the template, this template must be both front and back, although the handwriting of the symbols on the top is simple, but Yan Zheng's idea is to get a large number of copper coins from a copper plate at one time.

Therefore, the template must be hard, and it must also ensure that there is a certain fine gear shape.

However, it doesn't matter whether the first version is good or bad, as long as the side of the numbers is clear.

Yan Zheng believes that if a few more sets of templates are made, these people will be able to build a better minting machine.

After instructing the mint, he called a dozen more students and asked them to take copper coins and analyze the ingredient ratio of these copper coins.

The principle is also very simple, according to the total weight of 50 copper coins, constantly adjust the ratio of copper, lead and tin, and only need to change the test according to 10% each time.

Yan Zheng believes that with ancient craftsmanship, it is impossible to achieve a rigorous accuracy of one percent.

After doing all this, he issued another special order, informing the Shimazu clan that as long as there was copper, it could be used for cannons and saltpeter.

Moreover, it is stipulated that saltpeter can only be exchanged for copper!

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Pingzuo Castle.

After paying 2,500 people, Shimazu Tadamasa finally received the first batch of firearms, a total of 50 guns, two breech 75 guns.

It's a pity that these firearms are all monkey versions, the arquebus deliberately removed the bayonet slot, the cannon did not have a firing table and a ruler, and it was deliberately equipped with only five sub-guns.

Looking at these iron pipes, Shimazu Tadamasa was very suspicious.

He looked at it in silence for a while, then looked at Tatsuhiko Akiyama and said, "Do you know how to operate these weapons?"

"My lord, I've only seen people operate muskets, but when I think about the firing of firearms, most of them are the same!" Tatsuhiko Akiyama bowed.

"My lord, let's demonstrate it first!" Yoshihisa Shimazu on one side said that he was Shimazu Tadamasa's cousin and the leader of the troops that Shimazu Tadamasa trusted very much.

Shimazu Tadamasa nodded and ordered Tatsuhiko Akiyama: "You are good to demonstrate, don't be too fast, try to recall every action, if we want to learn, we have to learn kung fu at home!"

Tatsuhiko Akiyama solemnly knelt down on one knee to receive the order, and then directly took an arquebus and found the arquebus and lead bullet attached to the box next to him.

It's a pity that gunpowder can only be used by their own, but fortunately, Yan Zheng is more soft-hearted and gives them a small metal cylinder to let them know how much to load each time.

Tatsuhiko Akiyama picked up the arquebus very contrivedly, and with a snort, he slowly put the gun on the ground.

Then he glared angrily for a moment, as if he were communicating with the arquebus, and when he had enough, he slowly picked up the graduated cylinder containing the gunpowder and poured it into the barrel.

After pouring the gunpowder, he posed a few more with great momentum, all in slow motion.

Shimazu Tadamasa and Shimazu Yoshihisa both stared wide-eyed.

After Tatsuhiko Akiyama had put the projectile and pressed it tightly with a strip, he took a lit rope.

He raised the arquebus with a stern expression, as if he were communicating with the arquebus again, and after staring at it for a while, he clamped the arquebus to the dragon's head.

After a series of preparations, he deliberately chose a target that had a longer range than a bow and arrow.

As he pulled the trigger, Peng's projectile flew out with a whoosh.

One of the rows of planks in the distance shattered in an instant, and the whole process was between lightning and flint.

Shimazu Tadamasa's eyes widened, and the corners of his mouth couldn't suppress his surprise!

This roaring sound, this ceremonial firing process, this easy way of firing, this is a longer range than the Japanese longbow!

"This ...... This will surely strike fear into the hearts of the enemy! Yoshihisa Shimazu said excitedly.

Shimazu Tadamasa smiled and said, "This weapon is like a rainbow, and its attack is like a ghost, which will definitely make the enemy fearful!"

Tatsuhiko Akiyama was also very happy, and he handed the musket in his hand to the head of the family and said, "This thing can easily penetrate armor, and it is said that iron plates can also penetrate it!"

"Is that true?" Shimazu asked.

Tatsuhiko Akiyama said: "It should be true, heavy arrows can also break armor, and the power of this thing seems to be stronger than heavy arrows!"

"Try it!" Shimazu Tadamasa said with a smile.

With that, he asked the guards to take out the armor he had hidden.

Seeing this, Tatsuhiko Akiyama and Yoshihisa Shimazu both advised him to try it out with an ordinary piece of armor.

Shimazu Tadamasa smiled and said: "Only my armor is similar to the major names, try it today!" Then you will know if my spear is sharper! ”

After that, he personally consulted Tatsuhiko Akiyama on the firing steps, and then fired four shots at a distance of fifty paces before hitting the armor.

When he saw the hole in the armor, he was overjoyed and said, "Hahaha, God help me!"

Shimazu Yoshihisa also smiled and said, "My lord, this thing can be shot by ordinary farmers, which means that with this thing, you can make more and stronger troops!" And our dependence on samurai will also decline! ”

"It's not all!" Shimazu Tadamasa stroked the arquebus with satisfaction and said: "A samurai who can shoot arrows needs to be trained for many years, but this weapon, I have only practiced for less than an hour, and I can already kill people!" Although I have some knowledge of bows and arrows, I am not necessarily a farmer, and I will not be able to fight after a few months of training! ”

Tatsuhiko Akiyama flattered: "Your Excellency is wise!"

Shimazu Tadamasa smiled proudly and said, "For the sake of secrecy, this should be the mystery of iron cannons!"

Well, the strange mystery of the Shimazu clan has added another iron cannon mystery.

Soon, the attention of the three was drawn to the cannon again.

Shimazu Tadamasa patted the cannon and said, "The musket is so powerful, and such a big musket must be even more powerful!"

Tatsuhiko Akiyama nodded and said, "They call it breech guns, and they say that each one has five guns, and when you fire one, you will reload one, and it will be fast and powerful!"

"Oh!"

The three of them pondered for a while, and soon understood how to shoot, but they were very blind about how to aim.

That's right, in order to ensure the comfort of the little devil, Yan Zheng deliberately removed the ear.

So Shimazu Tadamasa insisted on using the cannon into a large arquebus, and he conducted a test shot with direct sight.

As a result, the cannonball swished and hit the courtyard wall, directly punching a big hole!

Shimazu Tadamasa was shocked and said: "The combat power of this thing is extremely terrifying!"

"It's an oversight, we should go outside the city for a test launch!" Tatsuhiko Akiyama pleaded guilty.

Shimazu Tadamasa nodded and hurriedly came to the outside of the city to test the firing.

When they found out that this cannon could hit far, far, far, Shimazu Tadamasa and Shimazu Yoshihisa's expressions were only horror and ecstasy!

"Gotta get this business done quickly, gotta buy more artillery!" Tadamasa Shimazu muttered.

Tatsuhiko Akiyama said, "My lord, please give the order to gather craftsmen to make these two weapons!"

Shimazu Tadamasa was stunned, and then laughed and said, "That's right! We need to be able to build this weapon, too! ”

"Zenjiu, I feel that the moment of revenge is coming towards me!"

With a sharp weapon, Shimazu Tadamasa's confidence occupies the commanding heights again, as if the darkest moment of life is gone in an instant.

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