After leaving the shipyard, he was excited and rushed to the firearm factory without stopping, checking the cannons prepared to be installed on the first warship.

Dozens of metallic cannons were stored in the finished product area of ​​the firearm factory. Wan Jun watched for a while and was excited and calmed down a lot. The solid bullet cannons on the front bore were a bit different from the rapid-fire cannons in Wan Jun's mind.

Wang Lihui rushed over from the casting room with sweat on his head, "First of the People, why did you suddenly come to Wuchang?"

Wan Jun said, "I'll see how you're doing."

Wang Lihui said, "Our firearm factory is bigger than before. The muskets produced here in a month are enough to be equipped with one or two regiments."

Wan Jun said anxiously, "This kind of firearm is nothing. I want you to develop a new firearm for me. How are you doing?"

Wang Lihui smiled mysteriously and whispered, "Let's go, let's go to the Five Elements Research Institute."

"Five Elements Research Institute?"

Wang Lihui turned over and said, "It's still a little distance to go here, so let's stay here."

Wan Jun said, "It's a little late, you go back to the city."

After saying that, Wanjun turned over and took a few personal guards, and followed Wang Lihui to the north.

Seeing that the sky was getting darker, Wang Lihui finally strangled his horse in a hill. In front of a simple camp, the Chinese soldiers guarding him saw that it was Wang Lihui and moved the horse-rejecting post.

Everyone rode their horses forward, climbed to the top of the mountain along a rutted mountain road, and there was another camp, followed by a large courtyard.

As soon as he entered the village gate, Wan Jun's eyes were attracted by a huge elliptical sphere, which was connected to a tube, and a man was busy burying his head.

Wan Jun walked forward and said curiously, "What is this?"

The man didn't raise his head, "I'm building an aircraft."

Hearing this, the troops' eyes lit up and their hearts pounded. If this aircraft is successfully developed, wouldn't it enjoy complete air supremacy in the 17th century? Later wars can crush all forces.

"How do you plan to fly, and what principle do you use?"

The man raised his head impatiently, and was a strange face. Seeing Wang Lihui accompanying the person who was asking him to change his color and explained, "Our supervisor has been guided by experts and asked us to study why the Kongming lantern flies into the sky and why the lid of the boiling pot would jump on its own."

When Wan Jun heard this, he said, wasn’t this what I wanted them to study and study hot air balloons and steam engines? What is the hot air balloon in front of him?

The man continued, "There are all the heat I collected."

Wan Jun said curiously, "Hot?"

The man was quite content, "Yes, when boiling water, the lid of the pot jumps because there is hot air in the pot and then fly out. A little hot air can push the lid up. Then I will collect more hot air and put it in this big ball, so how can I fly up?"

Wan Jun was speechless. This man mixed up the hot air balloon and steam engine two things to study. "Then have your ball flying?"

The man said, "Probably, I haven't collected enough heat and haven't been flying yet."

Wan Jun thought to himself that it would be strange if he could fly. He turned around and walked towards the room in the yard, where three people were busy.

The leader was familiar with each other, and Wang Lihui called out, "Pu Hong".

Pu Hong nodded to Wang Lihui and said to Wan Jun, "Sir."

Wan Jun remembered that this was the firearm master recommended by Wang Lihui to him, so he nodded and said, "What are you doing?"

Then Wan Jun's eyes lit up. He saw something familiar, with two wheels holding a thick gun barrel and a streamlined wooden support at the tail of the gun barrel, which looked quite like a thick 18th-century field gun.

"This is?"

Pu Hongdao, "This is our newly created mother-child gun to fire."

Wanjun Road,

"Has it been built? Can you test the shot?"

Pu Hongdao, "Yes."

Soon the two of them pushed the cart's wheel to an open space, facing the mound of soil made of mud in the distance, one stepped on the wooden support at the rear of the car, and the other took out a fire break and lit the fire.

With a burst of blue smoke, "bang bang bang", there were continuous sounds in the cannon barrel, and the mound in front of them was splashed with soil.

After about ten seconds, the sound stopped. Wan Jun walked forward and said in surprise, "Is this OK?"

Pu Hongdao, "Sir, this mother and son fired guns in succession, and there are 7,799 barrels. The gun at the tail can be taken out. The bullets are loaded and installed here. You can fire them in an instant at a little fire."

Wan Jun said happily, "I understand that as long as the reloading of the sub-gun can keep up, the mother-in-law can fire a continuous stream of firepower."

Pu Hongdao, “That’s right!”

Wan Jun said, "Since that's the case, you can mass-produce it as soon as possible and equip it to the army."

Pu Hongwei said, "There is still a problem with this gun that has not been solved."

Wan Jun said, "What's the problem? I think the launch just now is normal."

Pu Hongdao, "I don't know that the forty-nine barrels in front are together, and the barrel in the middle is very slow to dissipate heat. The barrel will start to heat up once it is fired. At most, no more than five times. The entire gun cannot be used, otherwise the temperature will be too high, and there will be a risk of a blow-off."

Wan Jun smiled and said, "You can close the gun barrel and add a water-cooled pipe. When firing, inject cold water into it. After firing a few times, drain the water from below and inject cold water, and then continue to use it."

Pu Hong suddenly said, "This is a way to cool down with water. If this is the case, the mother and child can quickly equip the troops with guns."

Wan Jun said, "It's so good. Pu Hong, you have made great contributions to this. I will reward you with 200 taels of silver. Keep working hard."

Pu Hong said excitedly, "Thank you sir."

Everyone arrived at another place, Fei Weisan, who loved rocket launchers. When he saw Wan Jun and others coming, he was already waiting.

Wan Jun said, "What are you studying?"

Fei Weisan said, "I found a very strange problem. My graded rocket launcher has been studied, but it can only increase the flight distance. No matter how high it flies, it will fall in the end."

Wan Jun was surprised. Fei Weisan was studying rocket launchers, so he was going to discover gravity, "You continue to say, have you developed something?"

Fei Weisan said, "I suspect my rocket was flying and hit the floor of the Heavenly Court, so they all fell down in the end."

Wan Jun was a little speechless for a moment. This idea was a bit big, but it was hard to break it directly. "Then why didn't you turn the rocket's head into a sharp point and let it pierce the floor of the Heavenly Court?"

Fei Weisan thought seriously, "That won't work. Will the immortal fall down after the Heavenly Court pierces the immortal?"

Wan Jun said angrily, "It's just right that a fairy is falling down, you just have multiple wives."

Everyone laughed and Wan Jun said, "During the Hongwu period of the Ming Dynasty, there was a Wan household named Tao Chengdao. He wanted to go to heaven to see it, so he sat on a chair with a rocket tied, holding a kite in his hand, and flew into the sky. Do you know what happened in the end?"

Fei Weisan said curiously, "Has he seen the fairy?"

Wan Jun said, "The rockets exploded, Tao Chengdao is dead."

Fei Weisan nodded and said, "The medicine and explosives sprayed by the rocket are different. He made a mistake."

Wan Jun glanced at Fei Weisan suspiciously, "Don't you want to fly into the sky too, right?"

Fei Weisan said, "Well, I want to see if there is a floor of the heavenly court in heaven."

Wan Jun said anxiously, "You are stupid. There is no floor of the Heavenly Court. It takes hundreds of kilometers to go up from the ground. Your rocket launch speed cannot reach the first cosmic speed, and it is impossible to break free from the gravity of the earth."

Seeing everyone looking at him strangely, Wan Jun came to his senses.

I was a little anxious. How could they understand what they said? I said softly, "Remember, before doing an experiment, use rats and monkeys instead, and then use people after confirming safety. This is the most basic experimental principle."

After saying this, Wan Jun pointed to a thick rocket launcher behind Fei Weisan and said curiously, "What is this for?"

Fei Weisan was a little embarrassed, "I originally planned to get into this head and go up to heaven."

Wan Jun said, "You are committing suicide. If you think you hit the floor, you will die if you don't fall down."

Fei Weisan nodded and Wan Jun said, "I have an idea. Think about the principle of Kongming lanterns, use a thinner cloth to make a ball and paint it, and leave a hole under it to burn the fire, so that the heat can drive the ball to fly."

Fei Weisan said, "This Wang Amao is doing it, and he has never succeeded."

Wan Jun said angrily, "Go and call Wang Amao here, you two come with me."

When he got into the room, he put a pen on the table. Wang Amao was called over, and it was the person fiddling with the heat at the door.

Wan Jun said to Fei Weisan, "You, study hot air balloons for me and watch."

Wan Jun said on the paper and drew, "Big balloons should be as thin as paper, but they should be as strong as silk. Paint them with a paint to ensure that they are not breathable. Then leave a mouth here to burn the fire. The heat can fly with the ball when it comes up. Do you understand?"

Fei Weisan glanced at Wang Amao, "I can give it a try."

Wan Jun nodded and said, "Well, after making a frame hanging below, people can fly to the sky with the frame. Then you can go and see if there is any floor of the Heavenly Court."

After handing the paper to Fei Weisan, Wan Jun said to Wang Amao again, "Your research direction is wrong. It's not for the sake of burning hot water."

After taking a piece of paper, Wan Jun said while drawing, "As I said, the water in the kettle boils, the steam will increase the pressure here, so the lid of the kettle will jump up. Let's close it, make a piston and connect a connecting rod, add a long arm to the connecting rod, and connect the gears. Look at the steam pushing this connecting rod, and the gears here will rotate."

Wang Amao said, "What's the matter?"

Wan Jun was a little speechless, "Then if this steam is enough, it can push the heavier things to move."

Wang Amao asked in confusion, "What's the matter?"

Wan Jun said angrily, "Who got it all, let him blow it out."

Gong Bisheng, who was standing beside him, said, "I seem to understand what the lord said."

Wan Jun watched as his personal guard retreated Wang Amao, breathed a sigh of relief, and heard Gong Bisheng say, "Tell me, let me see."

Gong Bisheng said, "As long as we can move, we can add something else to the gear, such as adding two wheels."

Wan Jun said happily, "Do you continue talking?"

Gong Bisheng said, "We can build an iron cart with cannons installed on the iron cart. People and animals cannot push it, but use steam to push it."

Wan Jun was shocked. This was a talent, iron carts, cannons, and the king of land warfare tanks.

Gong Bisheng continued, "We can also add it on the boat, add it in the cast iron factory, add it..."

Wan Jun waved his hand to interrupt Gong Bisheng, "Okay, OK."

Gong Bisheng almost thought he was going to be bombed out, and Wan Jun smiled and said, "The biggest gain today is you. You have to work hard to study this thing quickly."

"Lihui, your Five Elements Research Institute is doing well. I'll ask Zhao Boyuan to give you more money and get more people, but you have to keep a close eye on Wang Amao."

Wang Lihui said happily, "I will do it."

Wan Jun nodded and said, "No, but the name of your Five Elements Research Institute needs to be changed. If you don't call it, you won't be able to study the Institute."

Wang Lihui said happily, "Please give me a name."
Chapter completed!