The heartfelt applause rang out for a long time, and everyone, including the representative of Mingxin Street, clapped their palms red.

When the applause finally stopped, Lin Feng told the representatives of Mingxin Street to draw up a "Civilized Health Convention" on Mingxin Street with all the rules and procedures agreed on today, and make a big sign to stand at the corner of the street.

Lin Feng, who was in a happy mood, waved goodbye to everyone, took the wind and clouds to the junior military academy for a turn, and then turned to a deep mansion with tall trees not far north of the Thorn History Mansion before it was completely dark. Here, Xi Mucheng, who arrived in advance after Lin Feng took office in Shouzhou, bought it at a high price in the name of a wealthy businessman in Shouzhou.

"Who? Get your name in! A loud shout rang out from above the door.

"Fengxiang Nine Days. I'm Lin Feng! Lin Feng replied softly, his right hand in front of his chest with a hidden gesture.

"Lord Lin, it's disrespectful, please come in!" Two heavily armed special soldiers jumped down from the door of the mansion and saluted Lin Feng with a beating of their chests.

Lin Feng greeted a few words, and entered the real research center of the Shouzhou Academy of Sciences with Feng Jingyun.

As soon as he entered the door, Lu Jiang, who rushed over after hearing the news, rushed over and reported to Lin Feng that the research of the Heaven-Shaking Thunder was progressing smoothly, and ninety-three had been accumulated so far.

Lin Feng was greatly relieved and thanked Lu Jiang and his brothers.

Lu Jiang approached and reported in a low voice: "The craftsmen sent by the Huang, Fang, and Pei families are all very good, very serious, and very modest. ”

Lin Feng nodded slightly, signaling that he had already understood. Huang Zongwang, Fang Hongxing, and Pei Songlin were all interested in participating in the production of private weapons, and while sending Jiading and their descendants over, they also secretly sent blacksmiths who had been confident to come over to learn weapon making.

Lin Feng walked back again and came to a spacious courtyard in the middle of the house. Under the towering trees, there are twelve tall stoves in the northeast of the courtyard, and the blazing fire reflects the entire courtyard as if it were day, and Zhao Bin and a group of craftsmen are busy sweating in front of the fire.

Lin Feng went over and observed carefully for a while, and Zhao Bin found Lin Feng and hurriedly came over to give a salute.

Lin Feng stopped him and asked kindly, "Brother Zhao has worked hard!" What's the difficulty now? ”

Zhao Bin grabbed his hand, rubbed his black hand on his forehead, leaving a dirty mark, raised his handsome face and said: "There is not much good steel, and there is not much coal." ”

Lin Feng groaned for a moment and replied, "Steel, I'll figure it out." As for coal, Luo Yu said that a shallowly buried open-pit coal mine has been discovered in Bagong Mountain, and the road is being cleaned up and will be shipped out soon. ”

Lin Feng picked up a long-handled steel knife that was still glowing red, froze it in the water tank, clenched his hands, and slashed at the scrap iron block of the test knife. The steel knife choked, and the scrap metal broke into two pieces. Lin Feng raised the head of the knife and found that there was only a white mark at the place of contact and collision, and couldn't help but admire the quality of the steel knife.

Lin Feng pointed to more than ten craftsmen and said softly to Zhao Bin: "After they are all familiar with all the steelmaking and smelting processes, you can divide the entire smelting process into one link and arrange for each of them to be responsible for only one link, I believe that the smelting speed will be improved quickly." It is important to remember that all weapons must be numbered and registered. ”

Zhao Bin's eyes lit up and he nodded excitedly.

Lin Feng walked over to Gazi, who was busy in a pile of wood, and patted him on the shoulder.

Gazi suddenly raised his head and found that it was Lin Feng, his originally annoyed expression immediately became relaxed, and he grabbed Lin Feng and said hurriedly: "Lord Lin, the chain of the bicycle has not been ideal, how to solve it?" ”

Lin Feng smiled, took a branch and drew his bicycle turntable, chain and pedals that were commonplace in later generations on the ground, and prompted: "The key parts of the bicycle can be considered to be made of steel, measure the size, and form the model at one time!" ”

Gazi nodded happily, pulled Lin Feng and ran to another pile of gears, and said loudly: "Is it possible that the key parts of the clock can also be made of iron gears!" ”

Lin Feng smiled mysteriously and said in a low voice, "Our mysterious weapon can also use this device to fight fire!" ”

Gazi looked shocked and speechless for a moment.

Lin Feng turned his hand and grabbed Gazi's sleeve, called out to Zhao Bin, walked to a side door, knocked lightly, and said softly: "Dragon Dance for Nine Days." A crack opened in the side door, and Lin Feng and the three of them quickly flashed in.

This is a very small courtyard, and there are four heavily armed special soldiers on duty, and there is only one blast furnace in the courtyard. This is the real core of the Academy of Sciences, where the development of earth-shattering thunder and guns is carried out, and there are only four people who have the right to come in: Lin Feng, Lu Jiang, Gazi, and Zhao Bin.

In the impression of Lin Feng, a military enthusiast, the development process of human guns can basically be divided into two stages of development: front-loading and rear-loading. In the initial pre-loading stage, it basically evolved according to the process of the musket - arquebus - revolver - flintlock pistol, and the key to the evolution was actually the way the gun was fired.

The musket is the earliest metal tubular musket, and the early small muskets in China belong to the musket. Its structure was simple, firing similar to today's firecrackers, with a barrel made of cast copper or wrought iron in front of it, and a fire door at the lower end of the tube. When fired, black powder is loaded through the muzzle of the gun, and then stone, iron, copper, lead, etc., are inserted, and the gunpowder in the fire door is ignited with red-hot wire or charcoal, and the projectile is fired. However, it was too inconvenient for two people to be responsible for aiming and igniting when the musket was fired, and in later generations of Europe, some shooters commented on the musket: "To operate a musket alone, you must have two pairs of eyes and three hands!" ”

And then to the back, it's the arquebus.

In order to make the gun easy to use by a single person, an Englishman invented a new ignition device, replaced the red-hot wire with a burning "rope", and designed the firing mechanism, which was the arquebus that had been popular in Europe for about a century.

The arquebus gun has a metal hook on the gun, one end of the hook is fixed to the gun and can rotate around the axis, and the other end holds a burning arquebus. When the soldier fires, he pushes the metal hook into the fire door with his hand, causing the fire rope to ignite the black powder, and then firing the projectile inside the chamber of the gun. Fire rope is generally made of hemp rope or tightly twisted strips of cloth, soaked in potassium nitrate or other salt solutions and then dried, which can burn slowly. When the soldier presses the metal hook into the fire door, he can hold the gun in one or both hands, keeping his eyes on the target. Historically, a well-trained archer with an arquebus can fire two rounds every three minutes at a range of about 100 to 200 meters.

However, the musket and arquebus have one of the biggest problems in common, the gunpowder and the arquebus are afraid of moisture, and they will stop cooking when it rains, which is why Lin Feng skipped these two gun types and directly aimed at the revolver.

The inventor of the revolver musket is controversial, but it is generally accepted that the German watchmaker Johann ? Invented by Kiefers. Combining the serrated rotating steel wheel of a clock with a flint capable of producing sparks, he succeeded in developing the world's first revolving rifle in 1515 AD.

Lin Feng picked up the basically formed gun from a pile of test samples on the stone table, felt that its length and size were more suitable for mastering, nodded with satisfaction, and asked, "Have you tried to launch it?" ”

Ghazi nodded: "Launched." However, there was a time when the barrel exploded, and there was a lead shot that would run around and be too far from the target. ”

Lin Feng turned to Zhao Bin, and he hurriedly replied: "That time the barrel exploded because the material of the gun was not the best, and it never appeared again. There's no way to solve it with lead bullet jumping. ”

Lin Feng stroked the still smooth barrel back and forth with his hand, and prompted, "What if we let the lead bullet spin before it is discharged?" ”

The other three were all stunned, could this work?

Lin Feng smiled, pointed to a bicycle in the corner and said, "You should all have tried riding a bicycle." If the car is left there, without leaning, it will definitely fall. However, once you ride it, you can keep your balance and go straight ahead. The principle is the same in the world, if there is a circle of rotating precision rifling in the barrel of the gun, so that the bullet continues to rotate in the chamber, then it can not keep moving in a straight line after it is discharged, right? However, it is necessary to precisely consider the ratio of the male-female rifling line, the diameter of the barrel and the size of the lead bullet, and how quickly the lead bullet is loaded. ”

There is a metaphor in later generations that rifling is the soul of the barrel, and only rifling can give the warhead the ability to rotate, so that the warhead can still maintain the established direction after it is discharged.

Gazi slapped his thigh, gave Lin Feng a thumbs up, and picked up a tube and compared it to the slender stone fan with a cast barrel.

Lin Feng looked at this skill maniac with admiration, and smiled at Zhao Bin and Lu Jiang: "Let's go out of the devil and let him think about it!" ”