Qi County, an artillery test site outside the city.

A simple wooden house with three meters square was built in the corner here, and three-inch thick wooden boards were hung on the four walls of the wooden house.

Li Yan, Wang Renhui, Wang Renli, and Ma Chaodong were outside the wooden house. Li Yan was holding a round firework bullet with a raised bulge in his hand, with a long lead wire behind the raised bulge.

"This must weigh four or five kilograms, right?" Li Yan asked, holding the fireworks in his hand, "What is the diameter?"

Ma Chaodong replied: "The diameter of this fireworks is three inches, and the total weight is four kilograms and three liang. This time, there was no launching medicine, and it was filled with equal weight of soil. If the explosion effect is good, it can be settled."

"How many lead bullets are there?" Li Yan asked again.

Wang Renhui replied: "Twenty pieces, no more. If there is too little gunpowder, there will be no explosion power."

Li Yan nodded and said, "Well, to achieve the best effect of explosion and killing. If you deal with refugees, you can use smaller lead bullets or iron sheets. However, when dealing with armored enemies, you must use the bullets of the musket, otherwise the killing effect will not be obvious, which is a waste of gunpowder."

"Well," Ma Chaodong nodded, "The general is right. Our previous tests have adjusted the amount of gunpowder. If there is less gunpowder at this diameter, the power of the explosion will be weakened."

Li Yan nodded and said, "Well, you just need to notice it. Let's start now."

Ma Chaodong took the fireworks and bounced into the wooden house, while Li Yan, Wang Renli, and Wang Renhui walked behind an earthen wall not far away. The earthen wall was five feet high and two feet thick, and it was specially built by Li Yan for people to hide for the testers.

After waiting for a while, Ma Chaodong hurriedly came out of the wooden house and tied the door, so he quickly ran over. He came to the back of the earthen wall and squatted down and said to Li Yan: "General, cover your ears, this thing is very loud."

"No need." Li Yan waved his hand and said.

As soon as he finished speaking, a "boom" sound exploded. Some black smoke came out of the gap in the cabin, and the wooden boards also made crackling sounds.

Li Yan and the others stood up and looked at the wooden house. They found that there was no sign of collapse. They waited for a long time until there was no smoke coming out in the gaps in the wooden boards before they went over to check the power of the explosion.

After they opened the door, smoke and dust were still everywhere, and they waited outside for a while before entering.

Li Yan looked on the wooden boards on the four walls and found that the wooden boards hit by the projectile had a pit of about one inch, and the boards had cracked. This means that the speed of the projectile was OK at this distance, but the speed was not fast. If it was fast, it should be pierced. However, being able to crack the wooden boards means that the energy was OK, and it could also cause some damage to enemies with armor, at least it could make them feel pain.

Li Yan nodded, picked up a deformed lead bullet and said, "It's okay. If you hit it like this, the enemy archers can already deal with it. If you have dense infantry, as long as the shells are fired, you can achieve the killing effect."

Ma Chaodong smiled and said, "With this power, if you hit three or five, the enemy will collapse."

Li Yan shook his head and said, "It's okay to use it for the first time. If you use it too much, your opponent will also make corresponding adjustments. Maybe the enemy will also use the same method to deal with us, so we must not only know how to use this new weapon, but also be able to curb the same weapon of the enemy."

Ma Chaodong and the other two nodded and accepted Li Yan's teachings.

“能打多远呢?”李岩问道.

Wang Renhui replied: "It should be more than 150 steps."

Li Yan thought for a while and said, "Can the leads be controlled? If they explode before they reach the enemy's head, it will not be of much use."

Wang Renli promised: "Don't worry, you have left enough length, it must have exploded after landing."

"Then you can't leave too much." Li Yan reminded: "If you give the enemy enough time, if the enemy throws our bomb far away, it will be useless."

"Ah?" Wang Renli said in embarrassment: "This requirement is a bit difficult and difficult to control."

Li Yan gave him peace of mind: "Don't need to be too precise, just have a time range. You can try it slowly. The key is the lead wire, and every piece you need to do has a similar combustion speed, so that it will be easier to control."

"Okay, let's try our best." Wang Renli nodded and said.

Li Yan suddenly thought of the power of the explosion and asked, "You should also try the formula of gunpowder. Different proportions have different explosion effects."

Wang Renhui said: "Well, after you mentioned it last time, we started to try it. It seems that if there is more saltpeter, it will be more powerful."

"Don't worry, you can try it slowly." Li Yan nodded with satisfaction and said, "But keep records so that we can do research in the future."

"Yes!" Wang Renhui and the other three bowed and agreed.

Li Yan reminded: "Please pay attention to rest, but you must keep going to the literacy class at night. No matter how good your mind is, how much can you remember? You will forget it after a while. It's better to remember it, and you can remember it at a glance."

“属下记下了.”三人又是答应着.

Li Yan ordered: "Okay, just this size. Report the request to the Blacksmith House and ask them to make a cannon barrel as soon as possible to try it out to see if it is suitable or not."

"Well, OK." Ma Chaodong said: "I will be sent to the Blacksmith's House tomorrow."

Wang Renli asked, "General, is the new Mr. Li your relative? I think you are very close."

Wang Renli was talking about the new Li You and Li Dong. Huaiqing Mansion on the north bank of the Yellow River was also famine-filled and people even fed each other. It was difficult for the family to live, so the two brothers thought of Li Chunyu, the cousin of Kaifeng. After Li Chunyu obtained Li Yan's consent, he sent the two over. Li Yan didn't know what would happen in the future, so he had already explained it clearly to the two. Everyone just thought it was just acquaintance and could never reveal their kinship.

Although they have learned martial arts, Li Yan is not able to arrange for them to lead troops directly when they are just coming to the military affairs. Moreover, Li Zhong and Li Mou already have Li You and Li Dong, so it is better to arrange for civilian positions. After all, their careers are not just about force, but also about copywriting work. These tasks also involve some secrets, so it is more reassuring to leave them to their own people.

Li Yan smiled and shook his head, saying, "They are all surnamed Li. I think they read a lot and have not read bad brains, so I look at them a few more. You must also recognize words well. You must have knowledge of the work you do. If you cannot keep up with the development of technology in the future, you will have the possibility of being eliminated."
Chapter completed!