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Zhang Dou walked in the fire gun workshop to observe the fire guns produced by the craftsmen, these fire guns have been improved by Sun Yuanhua, and they have been greatly enhanced in both range and power.

In the past, the Ming army's firearms were at most about 50 paces, and if you wanted to break the Jurchens' 3-layer heavy armor, you needed to put the enemy at a distance of 30 steps.

The heavy arrows shot by the Jurchens can give the Ming army a major damage in 50 steps, and under such unequal shooting, there are really not many Ming troops who can maintain their formation and shoot at the Jurchens.

Therefore, the fire gun was regarded by the Jurchens as a costly toy, and it was a big toy that was not useful at all.

Zhang Dou, as a traverser of later generations, knew the power of firearms, so he vigorously developed firearms from the day he established the Changxinggou military camp.

The arrival of Sun Yuanhua has made great progress in the firecracker. In the past, Daming needed to build a few guns and then weld them together.

The gun tube created by this process should not be charged too much, otherwise it will be easy to explode. The process of Sun Yuanhua is to roll an iron sheet on the steel core and beat it in a semicircular groove.

Beat the iron sheet tightly on the steel core, and after welding the interface, roll another layer of iron sheet on top and weld it to death. In this way, a double-layered composite type of gun tube is formed, which can withstand high chamber pressure, so it can be charged with multiple charges.

The effective range can reach 80 steps, 60 steps can break the double layer of heavy armor of the Jurchens, and 50 steps can shatter people's internal organs even if they can't penetrate 3 layers of heavy armor, which is definitely a big killer on the battlefield.

However, the speed of making firecrackers in this way is too slow, and even if Zhang Dou asks the craftsmen to use assembly line work, they can only make 5 firecrackers a day.

In the face of such a painful output, Zhang Dou was speechless for a while, if he wanted to ensure the quality of the firearm, he had to endure such an output, which was simply an unsolvable problem.

This is still because he improved the iron-making furnace, otherwise there are too many iron impurities smelted and he has to be beaten repeatedly before he can use it, and the effect will be even slower.

The iron material used to make the fire gun also needs to be processed by the frying steel method, and the fried iron is already a low-carbon steel. Otherwise, it is to turn pig iron into steel that can make firecrackers make Zhang Dou sad to death, and in the face of the productivity of this era, Zhang Dou can only hope that the Jurchens will get the news later!

If the Jurchens came to attack Changsheng Island, they would need to come by boat, and the generous transport captain Zhou Dunji sent more than 20 sea ships to Zhang Dou in a row.

There are 8 sea boats that can carry more than 20 tons of cargo alone, and there are 16 bird ships left. These bird ships Zhang Dou have basically been replaced with dhows, which can already make the navy of Changsheng Island take shape.

With these fast bird boats, Zhang Dou was able to establish an effective early warning mechanism in the waters of Changsheng Island. If Jiannu attacked from the sea, he would also have time to defend himself against the enemy.

Today is the day to install a 3-pounder gun on the bird ship, and of course Zhang Dou wants to see the effect of Changsheng Island's own artillery on the sea.

As soon as he walked to the street of the Dragon King Temple, he saw a group of people gathered in front of him, arguing loudly about something.

Zhang Dou walked over curiously, and his arrival made many people recognize him. They all made way for Zhang Dou, and when they walked into the crowd, they saw clearly that it was three businessmen who were arguing.

Zhang Dou was a little lacking in interest when he saw this, and he didn't want to get too involved in the dispute between several businessmen, so he had to turn around and leave.

Then a voice shouted to him, "My lord! You have to call the shots for the villain! ”

Hearing that someone was asking for help, Zhang Dou stopped, and he found that the businessman who asked him for help was a little familiar, but he couldn't remember where he had seen it.

The businessman who asked for help came to Zhang Dou's side, "Poof! He fell to his knees.

"My lord! The small one trafficked a boatload of black stones to Changsheng Island to sell, and was bought by these two people. They have all paid the money and signed the papers. As a result, the two of them came to find the back account again today, which is too bullying for outsiders! The merchant cried.

The other two businessmen also knelt down in front of Zhang Dou and said, "My lord! Don't listen to this outsider's nonsense. You helped him beat away the people of the court a few days ago! This profiteer also deceived us with fakes, you have to call the shots for the little ones! ”

Listening to the words of these two businessmen, Zhang Dou finally remembered the businessman who asked for help in front of him. He was the businessman who didn't give way to Yuan Chonghuan that day and was beaten by the guards.

"The things sold by the villain are genuine, and you have also inspected the goods, how can you say that I am a profiteer and deceive you! It's so raw, it doesn't make sense! ”

"He also said that he didn't lie to us, although the black stone you sold was beautiful, but when you spread it on the ground, it will fade down. It's all black in the house, what do you say? A businessman said excitedly.

His words made the out-of-town merchant's voice much quieter, and his own goods were clear to himself. Those stones look shiny, but when you get them in your hands, you will stain your hands, and you can use them to pave the yard.

So he hid his mind when he was selling goods and deliberately signed a document. It's good to hold it in your hand as evidence and use it in a lawsuit. He was originally ready to leave as soon as the goods were sold, but there was a sudden storm on the sea, and he had no choice but to stay on Changsheng Island.

Today, I was approached by a buyer to open the door, and I met Zhang Dou when I was pulling. He has the paperwork in hand, of course, he is not afraid of lawsuits, so he boldly stopped Zhang Dou and asked for justice.

Zhang Dou's palm moved when he heard the black stone, shiny and shiny, and faded stain, could it be that kind of ore?

Then he said to the merchant, "Bring me the black stone." A short time later, a merchant brought a handful of black crystals.

Zhang Dou couldn't help but be overjoyed when he took it, this was manganese ore, and it was also one of the few ores he knew. Later, he had seen this ore on the dock in his hometown, and he also inquired about it, and this ore could be smelted into iron to make high-manganese steel.

This steel is commonly used in a type of knife, which is extremely hard and wear-resistant, and has a very common use.

Take the current Changxing Army's guns and artillery as an example, with high-manganese steel cutters, you can drill out the gun chamber and gunnery pipe, which greatly saves time. Later, the technology has improved, and it can also make rifled guns, which can easily hit targets 400 meters away, and can be used as a sniper rifle.

As soon as he thought of these benefits, Zhang Dou's heart became excited, and he said with a suppressed excitement: "This kind of black stone official looks good, don't fight, sell it to this official!" ”

The three of them were overjoyed when they heard it, and a dispute was resolved happily. The merchant who sold the stone was afraid that Zhang Dou would also find him, and said worriedly: "My lord! This stone villain was also bought from someone else, and he thought he could make a fortune, but he didn't sell it after walking many places. Do you really want it, my lord? ”

"The official wants it all, and it is as much as he wants. The larger the quantity you ship, the higher the price you will give! Zhang Dou said with a smile, he was happy in his heart, and naturally he also had a smug smile on his face.

A bird boat with four 3-pounder guns mounted was constantly firing at the target ship in the distance, and at a distance of 1 mile, the target ship was continuously hit, but after a dozen shots, the target ship was blown into a pile of broken wood.

Zhang Dou was overjoyed when he saw it, and the bird boat with this kind of firepower was not afraid of a large-scale attack by the Jurchens at all.

The old shipwright on the side said beside Zhang Dou: "My lord! Now 6 bird boats have been reinforced, and as soon as the artillery arrives, it can be installed, and it is completely capable of withstanding this kind of artillery. The remaining bird boats can also be strengthened within this month, so you can be sure that you won't miss the adults! ”

"Steward Zhao has a heart, with these ships, we are not afraid of the attack of the Jurchens, and your shipyard can be said to have made a great contribution. Ben will thank Zhao for the tens of thousands of people on Changsheng Island! Zhang Dou said.

"Don't you dare! The villain is just a craftsman in a shipyard, and the adults can afford to let the old man manage the shipyard and pay him such a high salary. The old man is already grateful, and he will do his best in the future to repay the kindness of the adults! Steward Zhao said excitedly.

"Achievements must be rewarded, and the successful transformation of the bird boat rewarded the shipyard with 1,000 taels of silver. If you can make the clipper requested by the official, you will be rewarded with 5,000 taels of silver. Ben will speak his word and never break his word! After Zhang Dou finished speaking, he caused a burst of exclamations, this is a heavy reward! The breathing of each shipyard craftsman intensified.

Returning to the Changxing Army station, Zhang Dou announced that as long as each workshop made achievements, he would be rewarded. Huge bonuses were given for iron-making and cannon casting, and the eyes of all the craftsmen who were stimulated were red, and one by one they almost bit their fingers and wrote blood to show their determination.

After Sun Yuanhua learned that manganese ore could make high-strength knives, he plunged into the workshop of frying steel, and no longer bothered Zhang Dou.

Siltai, who was in Golden State, also stepped up his movements, and he first quickly reported to Abatai. said that he found the location where Zhang Dadou was hiding, and began to contact him Liu Xingzuo in Fuzhou to ask him to jointly send troops to attack Changsheng Island.

Liu Xingzuo fell into deep thought when he got the news from Siltai.