Zhang Shun thought it was very simple, and hollowed out the tree trunk and turned into a pine cannon, but in fact, this job was very troublesome.

The trunk of the pine tree is very hard, and there is no better way. It can only rely on a group of people to dig it out bit by bit with human power, and it cannot damage the outer skin. The inner wall cannot be too thick or too thin. It is too thick and the charge is small and the lethality is small. It is easy to explode if it is too thin. These are all problems. Therefore, after the work is arranged, the preparation work that was originally very smooth has changed suddenly.

Although he had many people at this time, and more than 5,000 coolies who had been working on these jobs before, and all kinds of equipment were also available, even in this case, the speed of progress was still very slow. The workers started with chisels and knives, but it was too slow, so some people came up with a method of using Luo Tie to burn it. However, how could the trunk of pine trees as thick as a bucket be so easy to get it done? So a large group of people were busy for a while but only made one during the day.

Zhang Shun was not idle either. He had already started to configure the gunpowder inside. This time the gunpowder seized was about 2,000 kilograms, but these were all Tartar recipes or ancient recipes. Not only were they not configured according to the most standard 1:2:3 ratio, but there were also a lot of unknown things in it, which also led to the explosion of this gunpowder being too small, so he had to find a more accurate recipe.

In fact, in later generations, he often faced such explosives. Who would use real explosives to film? But in order to get a more realistic effect, more things must be mixed in it. After so many years of hard work, he has long had a good understanding of this kind of thing. As long as he has a simple understanding, he can almost calculate how much medicine should be put.

Zhang Shun had never been to school before, so he knew nothing about those more complicated basic operations, but some people were born to do this job, and they didn’t need any theoretical foundation. They just had a look at it and you would understand it almost. Zhang Shun is such a person, just like the old people said before, this kid was born to do this.

He first did a very small pine tree cannon to do his own experiment, and then calculated the actual range and power of this thing. This thing is not as simple as it is. After repeated experiments and increasing the amount again and again, Zhang Shun has completely devoted himself to his work. He has forgotten the time, forgot to eat, and even forgot that his current situation is still very dangerous.

In the past, he studied explosives because he wanted to ensure the safety of everyone and must not cause anyone to be hurt by one of his own mistakes. But now the situation is just the opposite. He must use this kind of research to ensure that what he made can kill more people. Only by killing more people can he have the chance to leave with more people alive, which is probably even more difficult than before.

After Zhang Shun finally put down his notes and marked a final amount on it, he breathed a sigh of relief. Now he finally knew how much he needed. It was much easier to separate these things and then make them into medicine bags, so as to ensure the fastest speed during battle.

Let go of this, and immediately felt dizzy and yelling. I didn't know when it was now, so I walked out of the house. As soon as he came out, he was shocked. It was getting brighter again, and he had been busy all day and night.

Zhou Feiyu has been standing outside all the time. As soon as he saw Zhang Shun come out, he immediately walked up. Zhang Shunye immediately saw that his eyes were full of blood, and he immediately said, "Why haven't you been sleeping all night?"

"I also slept for a while, but I couldn't sleep if I had something to do."

Zhang Shun naturally knew that the situation was not good now. Everyone was busy with their own affairs. A warrior like Zhou Feiyu could not get involved, so he could only be anxious and was a torment. He immediately smiled, "I have done it. You go and concentrate all the bombers and let them pack the medicine bags. These ratios need to be kept at first level and must not be known by the Tartars."

"Don't worry, General, these bomb droppers are our old brothers, they will definitely be the same as us."

"I know this, so I handed over such an important thing to them. By the way, are the craftsmen going well? How many have they made now?"

Zhou Feiyu sighed, "It's very slow. This thing is really too difficult to make. They worked hard for a day and a night to make two. At this speed, we may have to stay here for a month."

"Stay for one month?" Zhang Shun smiled bitterly, "We can't stay for ten days! Let's go and see if we can think of any good solutions!"

The group came to the craftsmen's place behind. Before they got close, they saw a large group of people surrounding the yard, and they exclaimed from time to time. They didn't know what they were looking at. Zhang Shun and Zhou Feiyu looked at each other suspiciously, then walked over, and stood behind the crowd to watch the things inside.

But Zhang Shun didn't know that if he didn't look at it, he almost screamed after just a look. Isn't this a simple machine tool? How could it appear here?

There is a simple machine tool with several benches assembled in the yard. On a wooden rack on the operating board, there is a thing like a machine head, and there are more than a dozen shiny daggers inserted on the machine head, and below are gears connected with a cowhide belt and two shaking handles.

At this time, a piece of pine stake was placed on the operating table. The dagger had been inserted into the tree stump. Then Chen Qi was operating the two shaking handles with his own hands, and one of them was holding the wooden stake behind him. As he shook, the wood chips fell down one after another. In a short while, the wooden stake was cut halfway. Then he dropped the wooden stake or continued the operation just now. In a short while, the wooden stake was ready.

Immediately someone took it over and used a soldering iron to iron the inside of the tree stump. Then someone added three iron hoops outside, and someone went to get into it. In just half an hour, a pine tree cannon appeared in front of everyone.

"So amazing!" Many people were happy. With such a thing, they could finally be liberated from the heavy labor.

"Who did this?" Zhang Shun shouted outside. At this moment, he was really excited. Did he see someone from the future like him in this place? Suddenly something called homesickness rose in his heart.
Chapter completed!