Fu Wenjing thought for a while and asked, "Range?" Is it just how far the shells blow out? ”

Fu Wenxi pointed to some of the projectiles that Lang Kun had already made and explained: "Yes, what displeased Lang Kun is that although the projectiles he made can explode, they often explode in the air and never fall to the ground. You won't be able to hit the targets you need to hit! ”

Fu Wenjing saw the big pits not far away in the vegetable garden, and knew that they were all blown up by Lang Kun when he was doing experiments!

Fu Wenjing said clearly: "So that's the case, I thought she was not satisfied with the compatibility of the projectile, but now it turns out to be the range!" He makes firecrackers at home and knows the principle of gunpowder explosion, but if he makes the explosion farther away, he may not understand it very well. I don't know much about this either, so it seems that this is a question that needs to be carefully studied! ”

Fu Wenxi also agreed with Fu Wenjing's statement, and said with some annoyance: "You're right, we are all laymen in these aspects, let alone how to help him!" ”

Fu Wenjing looked at the projectile that Lang Kun had already made in the courtyard, and thought to herself, it seems that she still underestimated the difficulty of wanting to imitate the red-clothed cannon!

The next day, Lang Kun, who had slept well, felt much more comfortable, and came to the vegetable garden to test gunpowder!

Yesterday, he asked Fu Wenjing to give a forced rest, and his mind was much clearer. The lesson of failure in the previous study of the projectile range was too short, so that when he woke up again this morning, he summed up a set of experiences!

He made spherical shells, and when he did experiments, he generally used time-delay fuses. That is, when the cannon is fired, the gunpowder pack is ignited, and when the shell is launched, the fuse on the shell is ignited. The calculation of the length of the fuse and the landing time is more accurate and has strong lethality, but it is easy to explode in the air when it is a long-range target.

After thinking about it carefully, he decided to try it with a conical projectile today!

After thinking about it, Lang Kun put his idea into action! It just so happened that Zhou Shansheng had already done a good job of the red-coated cannon, so he made a conical warhead this time and experimented with a real red-coated cannon.

It turned out exactly as he imagined!

After making a conical warhead, he also added a touchdown ignition device to the top of the shell, which is similar to the principle of a roller lighter to ignite a cannonball. The first shot fired by Lang Kun directly knocked down the courtyard wall next to the vegetable garden where he was experimenting! However, fortunately, there was no danger, but the wall was knocked down, and a big hole was blown up in the ground!

After Lang Kun saw that no one was injured, he was also relieved and saw the blown up courtyard wall and the big pit on the ground. He originally thought that Fu Wang Ye would blame him, but he thought that he had finally helped Fu Wenjing make the cannonballs she wanted. I was actually happy in my heart!

The servants of the Fuwang Mansion heard this "boom-boom!" After the cannonball exploded, they all gathered over with a look of fear and stood by the courtyard wall that she had just knocked down with a cannonball.

When Lang Kun saw this scene, he also prepared for the worst, even if Prince Fu condemned him, he would be willing to be punished!

He finally made gunpowder that could be applied to the "red-coated cannon"! Now that Chen has a cannonball to defend the country, no matter what the consequences are, he will not regret what he has done now!

Lang Kun released the explosion of this cannon, which shocked the entire Fu Wang Mansion, and of course Fu Wang Ye also heard it! He rushed over with his family and saw the bombed courtyard wall. There were also the domestic servants gathered around. He knew that Lang Kun had bombarded him with a cannonball, so he asked Lang Kun: "What's going on?" ”

Lang Kun knew that he was still coming when he was supposed to come, so he knelt on his knees and kowtowed to Prince Fu, and said: "Lord, it's all the fault of the minions, the cannonballs made by the minions knocked down the courtyard wall of the palace!" ”

Fu Wang Ye looked at the courtyard wall that had been bombed without a trace, as well as the huge pit on the ground, and asked in disbelief, "Was this the cannonball you researched knocked down?" Is this cannon really that powerful? ”

Lang Kun said truthfully: "Back to the prince's words, this wall was indeed knocked down by the gunpowder made by the minions themselves when they were used for cannon experiments. The minions are willing to take full responsibility for this! ”

After confirming the truth of the matter, Prince Fu walked to the front of the big pit, looked at the knee-high pit blown out by the cannon and said, "I can't imagine that these things that Jing'er and Xi'er are studying are really effective!" Lang Kun, you did a great job! You have done so much for the country, how can I blame you? As for the fact that the wall was knocked down, I won't hold you accountable! ”

When Lang Kun saw Prince Fu's reaction, he knew that he had blown up the wall, and it should be fine. Then he said gratefully: "The slave thanks the prince for his kindness, it is the honor of the slave to be able to do something for the country, and the slave does not dare to take credit!" ”

"Father! Is it true that I heard that our cannon trials were successful? ”

At this time, Fu Wenjing, who took a bath for a while because of playfulness yesterday, also came to catch a cold!

Fu Wang Ye patted her shoulder with a smile, pointed to the wall that was damaged by Lang Kun just now, and said loudly: "Hehe, that's right, you see that the cannon you made has blasted the wall like this, it can be seen that its power is indeed very great!" ”

After seeing the result, Fu Wenjing also jumped up excitedly, he gave Lang Kun a thumbs up again and again, they actually copied the "red-clothed cannon", she feels incredible when she thinks about it now!

Fu Wang Ye already had a new idea at this time, he looked around, and didn't see Fu Wenxi's shadow, so he asked Fu Wenjing: "What about your third brother, I want to take this Lang Kun and Zhou Shansheng into the palace to see the emperor!" We must use the technology they have mastered to make our Tatsu Kingdom even stronger! ”

Fu Wenjing remembered what Fu Wenxi had told her when she went to see her this morning, so she replied: "The third brother has some things today, and he won't be able to come back until the afternoon!" ”

Lord Fu said with some regret: "Really? I still want to go into the palace with him immediately to see the emperor and tell the emperor the good news! ”

"Don't tell me, I already know!" Long Xingche's voice came from the vegetable garden!

After Fu Wang Ye and Fu Wenjing heard the voice, they hurriedly turned around, and sure enough, they saw Long Xingche wearing a regular suit, followed by Fu Wenxi in the vegetable garden where Lang Kun was doing gunpowder experiments!

"Knock on the emperor, long live my emperor, long live, long live!"

After everyone was sure that it was Long Xingche, they all immediately knelt down to give Long Xingche a big salute!

"Let's all be flat, I'm mainly here to see the red-coated cannon you made today!" Long Xingche said this, but he walked to Fu Wenjing's side, pulled Fu Wenjing up with his own hands, and held her hand tightly and walked to the cannon together!

Long Xingche is tall and long-legged, and Fu Wenjing was somewhat passively pulled by him, staggering behind! Because just now she also knelt down to salute Long Xingche. After saluting, he was pulled up by Long Xingche, Fu Wenjing looked at Long Xingche's broad back at this time, and didn't know what kind of expression was on his face!

ntent

The mistake of crossing provokes Jun's heart and wants to escape