Firearms developed to the stage of front-loading smoothbore guns, and then divided into two development routes. One is represented by the Migne rifle, which mainly improves the range and accuracy; The other, represented by the Desail rear-loading firing pistol, mainly increases the rate of fire.

The former developed the spiral rifling and conical bullet, and the latter developed the fire cap and bolt lock. Later, the two were combined to become bolt-action rifles.

The fire cap needs sulfuric acid, and sulfuric acid needs the chemical industry. It is the advice that Li Weijian can give, but it is just the Mine route.

Wu Zhaosong listened ignorantly, but Yan Fengzhen was proficient in practical learning, and pulled Li Weijian to speak.

"Why do projectiles have to be cone-shaped?"

"Reduce wind resistance."

"What's the use of the plug in the back?"

"The gunpowder fires, pushing the plug into the projectile, which expands at the back and fits the chamber of the gun. In this way, the projectile can go in a straight line when it is discharged. ”

"There seems to be a door...... But why did this rifling make a spiral? ”

"There is wind resistance, if this projectile does not rotate, it will fly out not far away, I am afraid that it will roll due to wind resistance, where can it hit straight when it rolls?"

"Huh? Makes sense. ”

Yan Fengzhen turned his head and looked eagerly at Wu Zhaosong, and Wu Zhaosong said: "Since Jingwen said that it makes sense, then please ask Fusheng to give the design drawings. ”

"It's cumbersome!" Yan Fengzhen said impatiently: "I have drawn a picture of my resurrection when I turn around, I ...... I have the money next month, so I can directly hire the Armament Institute to build it first and try it. ”

Wu Zhaosong smiled and arched his hand: "Jingwen Gaoyi, if it is really useful, this official will definitely play the court to show the merits of the two." ”

Yan Fengzhen said: "The idea of resurrection, you just have to repay him, what does it have to do with me?" I'm really impatient with the officialdom to welcome that, and it's better to make some objects. After a pause, he turned his head to look at Li Weijian, who was drinking tea next to him: "Resurrection, the ...... you said last time"

Li Weijian put down the teacup, smiled and took out a pattern from his cuffs, and a tape measure that he had only made out after he was blind.

"I thought about it carefully in the past two days, drew a picture, there are many parts on it, and asked Wu Langzhong to look at it to see how much it costs to make it."

"It's easy to say," Wu Zhaosong took the pattern and tape measure, glanced at it but didn't understand the reason, and then clicked to a clerk: "Go and call Director Chen over." ”

The clerk's office walked away quickly, and after a while, a thin old man in his fifties walked in. This man has dark skin, oily hands, oily robes on his body, and has never worn an official hat.

came in and bowed to Wu Zhaosong, Wu Zhaosong asked the secretary to hand over the pattern and tape measure to Director Chen, and said, "Come and see, can this pattern be made?" ”

"Yes." Director Chen squinted his eyes and swept for a long time, then carefully looked at the tape measure in his hand, and suddenly raised his head and asked, "What does the second son mean...... Is it to build this pump according to the scale on the tape measure? ”

Talent! Just by looking at the pattern, you will know what kind of thing is made, and this person will be good at creation!

Yan Fengzhen said: "This time it's not me, it's him." He looked sideways at Li Weijian and said, "Do you want to build a water pump for resurrection?" ”

"Yes, I have some ideas in my heart, and I don't think I can use them to make them."

Yan Fengzhen nodded, and didn't say anything, the firecracker, artillery, and even the steam engine would attract the second son of the Shao Si Kou family. As for the pumps, they are not numbered at all.

Director Chen frowned, and thought: "If it is made more finely, it should be able to be used." It's just that the curved paddle is not easy to make, and it must be hand-made by a master craftsman, and the throwing fee is not low. ”

Yan Fengzhen raised the teacup and said, "Lao Chen just gave the price." ”

"Eighty taels."

Poof-

Yan Fengzhen took a sip of tea on the ground, and his eyes behind the glasses widened: "How much?" ”

Wu Zhaosong said with a smile: "Jingwen also knows the price code of the Martial Arts Academy, I looked at the parts on it, according to the tape measure, all the molds have to be opened, and the master craftsman is handmade, which is naturally more expensive." But since it was brought by Jingwen, then reduce it, I think sixty taels is enough. What did Director Chen say? ”

Director Chen didn't like it on his face, but in the end he still gave his hand and said: "The lord is in charge, and the subordinates are all under the orders of the lord." ”

"Okay, then sixty taels. Send the best master craftsmen in the courtyard and make it as soon as possible. Wu Zhaosong turned his head to look at Li Weijian again: "When it is finished, resurrection will bring silver money to get it, what do you think?" ”

Li Weijian smiled and arched his hand: "Thank you Wu Langzhong." ”

Yan Fengzhen put down the teacup and said, "I have also drunk the tea, and I and Fusheng will not be in front of Wu Langzhong." ”

Wu Zhaosong shook his head with a smile and fingered a few times, but was speechless.

Yan Fengzhen got up and pulled Li Weijian: "Let's go, take you to see the self-striking bell." In that year, the sage Yuji sent people to the Xiyi realm to search for watchmakers, and it took three years to invite nine craftsmen from Rauszimassa and Carrara. Tsk, the Xiyi craftsman is taller than my father, where is the reason? ”

Yan Fengzhen spent all the money on the steam engine, and he has been staying in the mansion honestly for the past few days, and he has been depressed for a long time, pulling Li Weijian around. When I was hungry at noon, I ate some refreshments at random, and it was not until the end of Shen Shi that I was reluctant to return.

On the way back, Yan Fengzhen was very interested, one mouth in the east and one sentence in the west, thinking of where to go, and talking endlessly. Li Weijian agreed, but in his heart he estimated the metallurgical and manufacturing level of Dashun today.

He saw crucibles making steel, and craftsmen sprinkling toner into molten iron to make high-carbon tool steel; I saw nine Xiyi from unknown countries with more than 20 apprentices, stuck with a monocle magnifying glass and carefully installed a lever escapement; I saw the animal-powered hammer, which clanked and smashed a piece of wrought iron into a bar; I also saw the craftsmen cut out iron cylinders to be used as rollers in the bearings......

Li Weijian faintly felt that he was afraid that the top industrial level of Dashun at this time was no worse than that of the West, and what was worse was the popularity of industrial machinery...... After all, manpower is too cheap.

Li Weijian knew that he could not promote the development of the colony like Xiyi, which caused a shortage of manpower and gave birth to the Industrial Revolution. All he can do is to make a breakthrough in technology, popularize the steam engine first, and then push Dashun to open up outward.

In the previous life, he was mediocre, and he didn't have to be too extravagant in this life, but before he died, Dashun could include the entire Nanyang into the territory, which would be worth the trip.

"Resurrection, resurrection?"

"Huh? Oh......"

"Tsk, what's wrong with you?"

Li Weijian smiled and said, "I just thought that my water pump seems to be a little wrong. ”

Yan Fengzhen said: "Don't think about it, the inner government gathers skilled craftsmen from all over the world, and even some mistakes and omissions can be plugged for you." That Lao Chen was originally just a master craftsman, and six years ago, he pondered a crankshaft connecting rod, and the sage was very happy, and he directly taught the main task of the sixth grade. Since Lao Chen didn't say it, I think you can build your pump in a few moments. ”

Li Weijian only responded.

Yan Fengzhen said again: "It's getting late at this time, why don't you and I find a place to eat at will." ”

"Brother Jingwen is not in a hurry to go home?"

Yan Fengzhen couldn't say anything: "Today, my mother said that I would cook ...... myself."

Li Weijian understood, opened the curtain and saw that the carriage had already passed the Yongding Gate, which was very close to Jiafu, and he didn't know what delicious restaurants and restaurants were near the left, so he said: "If Brother Jingwen doesn't dislike it, come to my small courtyard and make up a mouth?" ”

He was polite, but when Yan Fengzhen raised the inappropriateness, he asked him if he had any delicious food. Unexpectedly, this Yan Fengzhen is a real person, and when he heard this, he immediately nodded: "It's okay." I heard about Jiafu's brocade clothes and jade food early in the morning, and I am about to see it today. ”

Yan Fengzhen said this, Li Weijian is not good to push back again. After a while, they arrived at Ningrong Street in front of Jiafu.

Walking to the door of Rongguo Mansion, there was an eye-catching doorman who stepped forward with a smile and said: "Fourth Master Jian, I bother you to move your feet and take two more steps, the two corner doors here are a little rusty, and they are waiting for Ming'er to replace them." ”

Four doors were opened in the south of Rongguo Mansion, the main gate was open without major events, two corner doors on both sides, and another corner door was opened in Jia Yuyuan.

Li Weijian is in and out of the corner gate on the east side, one is close to the stable, and the other is next to Jia Zheng's outer study at the corner door on the west side.

After a little thought, he decided to lead Yan Fengzhen into the house from the corner gate opened next to the small courtyard in the northeast, lest Yan Fengzhen be recognized by Jia Zheng's Qingke, and then it would be another troublesome matter.

So Li Weijian nodded, and ordered Wu Haiping, who was accompanying him, to go to the east corner gate, and he turned around and got into the carriage again, and ordered the coachman to continue walking. When they arrived at the entrance of the private alley, the private alley was so narrow that they could not get into the carriage, so everyone got out of the carriage and walked.

I vaguely heard the noise in Ning Guo's mansion, and then a person scolded sharply: "I want to go to the ancestral hall to cry for the master." There is hope that these animals will be born to this day! Every day, the family steals dogs and plays chickens, climbs the ashes, and raises the little uncle, what do I don't know? Let's 'fold our arms and hide them in our sleeves'! ”

Well? It's Jiao Da who scolds the street and exposes the short, right?

Yan Fengzhen was stunned when he heard this, and then sneered: "It's a loss, it's climbing ashes and raising a little uncle, and behind this wall is Ning Guofu, right?" ”

Li Weijian only smiled and shook his head, speechless. At this time, he sent people under the fence, and it was not easy to say anything

Moving forward again, it was already dark at this time, and I saw three people coming towards me in the distance. Li Weijian didn't realize it, he just cared about talking to Yan Fengzhen, and Xiuying, who had been following her side, looked back and suddenly felt that something was wrong.

"Childe, it doesn't seem right!"

"Huh?"

"There are people blocking the front and back, but I'm afraid that I won't be happy."

Li Weijian and Yan Fengzhen hurriedly turned around, and sure enough, they saw two men walking quickly at the entrance of the alley, carrying short sticks in their hands, which was obviously not good.

Yan Fengzhen was immediately annoyed: "Okay, there is a strongman in the first good place of the Beijing Division!" I'm going to ......"

"Brother Jingwen, I'll talk about it later, and I'll pass the current level." Li Weijian looked at Xiu Ying with a tight face: "How many can you deal with?" ”

Xiu Ying said quickly: "I can deal with the two of you empty-handed, if Childe asks me to use darts, it will be difficult to say." ”

"You are allowed to use darts to deal with the latter first!" Li Weijian pulled Yan Fengzhen and turned around and left.

Xiu Ying responded, turned around and took out a willow leaf dart from her sleeve cage, and raised her hand to hit it every seven or eight steps!

It was the first time Xu threw it at a person, and two darts were slightly out of sight, one on the thigh of the man on the left and the other on the arm of the man on the right.

screamed twice, Li Weijian left Yan Fengzhen and ran away: "Take care of my friend!" ”

"Hmm!" Xiu Ying answered, she carried three willow leaf darts with her, and now there was only one left. But seeing that he put the willow leaf dart in his palm, he put on a posture and bluffed at the three people who rushed over: "Look at the hidden weapon!" ”

The three people who rushed suddenly stopped and retreated in fright, and at the same time, Li Weijian flew and kicked the idler in the arm in the chest, picked up the short stick on the ground, picked it up and whipped it on the green cheek of the thigh dart.

With a muffled snort and a miserable scream, Li Weijian still didn't give up, stepped forward and knocked out the idle man who fell to the ground with two sticks, picked up the fallen short stick, and then turned around and ran back to help.

"Xiu Ying, on!"

Xiu Ying took the short stick with her hand, and suddenly her confidence increased, and she immediately approached the three people with a willow leaf dart in one hand and a short stick in the other.

The three people blocking the alley had an infighting at this time, and the stout man in the middle waved his hand again and again: "A little girl, two poor people, follow me!" ”

The two of them didn't think so, and they didn't say anything, and the person on the left simply said: "Ni Er, this deal is different from what you said earlier." Why does this little girl still put dark green? ”

The one on the right also said: "Our brother can't do it, you have to do it yourself!" ”

As the words fell, the two turned around and ran. Ni Er, who was among them, hesitated, and before he could figure out whether to go or stay, Li Weijian and Xiu Ying rushed over, and the two short sticks flew up and down, and Ni Er raised his arm to resist twice and was knocked to the ground.

Yan Fengzhen, who was trembling with anger before, came to his senses, ran over and kicked a few indiscriminately, shouting and scolding: "Father Yan Xiyao, dare to rob me after eating a bear's heart leopard? I don't think you want to live! Eh~"

The last sound was that Yan Fengzhen slipped with one foot, his body fell, and he stumbled twice before being supported by Li Weijian.

Yan Fengzhen became more and more annoyed, turned his head and shouted towards the alley: "Old Zhou, go and call the officials of Shuntian Mansion to clear these thieves and put them in prison!" ”

The coachman Lao Zhou heard the sound, and hurriedly came over to check, and then went to find the officials of Shuntianfu with a tiger face.

Ni Er on the ground held his head and shrunk into a ball, but whenever he made a move, Xiu Ying on the side would cover his head with a stick.

Yan Fengzhen shouted to himself: "There are such murderers in the first good place, where is the reason of heaven? Where is the royal law? ”

The shouting attracted the people of Jiafu to come and watch, but they saw a group of servants coming quickly around one person.

The man was fifty years old, and when he got closer, he gave Li Weijian a slight bow: "Fourth Master Jian, what happened to you shouting and drinking here?" ”

"You're—"

Li Weijian asked, and a servant said, "This is Grandpa Lai, the chief manager of our Rongguo Mansion." ”

"Shut up!" Lai Da scolded: "In front of the master, who dares to call grandpa?" ”

Li Weijian arched his hand and smiled: "It turned out to be the general manager of Lai." My friends and I wanted to go back to the small courtyard through the side door in the alley, but I didn't want to run into a strong man who cut the path, and I would be able to do it with two hands and three legs, otherwise I was afraid that I would be knocked on a stick. ”

"Is that so?" Lai Da was furious: "Come on, escort these thieves away, torture them and then send them to the official!" ”

Li Weijian sneered in his heart, and before he could speak, Yan Fengzhen on the side stopped doing it: "Wait a while!" Can the housekeeper of Jiafu abuse lynching? ”

It was getting dark, and Lai Da couldn't see Yan Fengzhen's face clearly, but seeing that he was dressed extraordinarily, he immediately arched his hand and said, "Dare to ask this son who is-"

Li Weijian smiled and said: "This is my friend, his surname is Yan, and his father is Lord Yan, the servant of the Criminal Department." ”

Lai Da sighed in his heart, knowing that this matter would not be good today!