Zhang Nan did not want to pretend to be mysterious, so when he heard Bingzhi ask, Zhang Nan also said openly: "I don't know how much you know about Botian Lei."

After hearing this, Bingzhi said honestly: "Sir, I can say that I have a good understanding of the Sky Thunder now. Because I have made a lot of Sky Thunder myself to build this weapon."

"Since you can create Sky Thunder, you must know that Sky Thunder does not rely solely on gunpowder to kill the enemy. When we create Sky Thunder, we will deliberately add some things to the Sky Thunder, such as tiles or stones." Zhang Nan said.

After Zhang Nan said this, Bingzhi immediately reacted.

"Mr. Zhang, what you mean is to use this gunpowder as force, and use this force to launch other things to achieve the goal of killing the enemy." Bingzhi said excitedly.

"Yes, that's what it means. You use this steel pipe as a container in essence, it's just that you're using the wrong method. You can try it, fill the gunpowder in a small warehouse, and then fill the stones and other things in front of the warehouse. After igniting the gunpowder, you can launch the stones. Don't underestimate these stones. Maybe a stone is nothing, but if there are too many stones and the distance is right, you can even smash people." Zhang Nan said.

The effective range of the storm is 100 meters, and within 100 meters, the lethality can be guaranteed. Of course, Zhang Nan did not expect the Tiangong Department to take out a firearm with relatively accurate accuracy in one go. As for semi-automatic weapons, Zhang Nan didn't even dare to think about it.

However, even if you only use the rifle gun, then the rifle gun is a powerful weapon after the cavalry rushes to the front, or when defending the city. Of course, the rifle gun also has many shortcomings.

It’s like the stones inside are just simply put in, so they can only be used to shoot flat or hit the sky, and there is no way to hit the target while lowering their heads or running.

"That's great. I'll make a steel pipe that can be used now." After Bingzhi said that, he was about to leave and quickly experimented.

"Can you do it now? The forging technology of the Tiangong Ministry is so mature?" Zhang Nan asked strangely.

Zhang Nan felt quite strange. Although now with the vertical furnace iron smelting method, iron output and steel output have increased significantly, this does not mean that forging steel is a simple thing.

You should know that this steel pipe is made by craftsmen with one hammer and it is not simple.

Hearing Zhang Nan’s question, Mo Zu and Bing Zhi both looked at Zhang Nan with an alien look. Mo Zu then said, “Qingquan, you haven’t come to the Tiangong Ministry for a long time. There are a lot of things in the Tiangong Ministry. Of course, this is the most important thing, our Tiangong Ministry’s gold and stone machine.”

"Golden and stone machine? What is that?" Zhang Nan looked strange.

What has the Tiangong Ministry made during these times?

"It is to draw the desired shape on steel or iron. I found that circles of circling patterns can be combined together, so there is no need to be reforged. Just connect these steel pipes together." Bingzhi said with a smile.

When Zhang Nan heard this, he was also shocked. If the diamond and stone machine mentioned by Bingzhi could really achieve this effect, wouldn’t the diamond and stone machine in his mouth be a lathe? If the Tiangong Department could even make the most primitive machine tools, then other subsequent machine tool branches, such as boring machines, milling machines, grinding machines, drilling machines, etc., would not be too far away.

Although automation cannot be achieved, Zhang Nan believes that there is no problem as long as it is something that manpower can achieve.

With machine tools, it means that the Tang Dynasty has begun to enter the industrial era, which is good news.

"Can you take me to see your gold and stone machine?" Zhang Nan said.

"Of course, the gold and stone machine is in the workshop. Is Lord Zhang going to see it now?" Bingzhi asked.

After hearing this, Zhang Nan nodded.

"Well, then I will follow Qingquan and go there. This gold and stone machine is the hard work of our entire Tiangong Department. When we built the steam engines in the big ship, the gold and stone machine did not make much effort. With it, our wasted energy was greatly reduced." Mo Zu said.

"Ah? Did this gold and stone machine come out when the steam engine was built?" Zhang Nan asked in shock. It turned out that the Tang Dynasty had already been in the semi-industrial era, which was far beyond his expectations.

Zhang Nan did not expect that he only provided a model of a steam engine, but let the Tang Dynasty enter the industrial age with half of his foot. It has to be said that the ancients' creativity and learning ability were also amazing.

"That's natural. The first steam engine of the Tiangong Ministry was built, which had many problems, but with the metal and stone machine, it can be said that many problems can be solved." Mo Zu said.

"Then I must go and have a look." After Zhang Nan said that, the three of them headed towards the workshop.

After entering the workshop, Zhang Nan had visited the gold and stone machine that Mo Zu and Bingzhi mentioned, Zhang Nan was increasingly impressed by the scientists of the Ministry of Heaven and Engineering.

Although the appearance of this diamond machine is really not very good, and it can even be said to be ugly, the effect of the diamond machine is surprisingly good. Although Zhang Nan doesn't know much about these machine tools and other things.

But Zhang Nan can still tell whether the things made are good or bad.

The diamond machine in Bingzhi's mouth is something that integrates a cutting machine and a lathe. The left end is used for cargo things, with several blades of different sizes installed on it, while the right side is used for cutting. A large blade made of unsightly materials is hung there.

Zhang Nan roughly looked at the working principle and found that these guys from Tiangong Department actually used the principle of linkage. There is also a foot pedal under the entire bed. By stepping on the foot pedal, the crankshaft is rotated and the flywheel is driven, and the linkage is made to the spindle, so that the spindle begins to rotate.

"How is Qingquan, this gold and stone machine is not bad. We are still studying new machines recently. Different functions. Although they cannot meet all requirements, some of them can still be achieved." Mo Zu said with a smile.

It can be seen that Mo Zu was still very satisfied with the lathes built by their Tiangong Department.

"Isn't this very simple? Now you can cut threads, replace the large blade on it with a small drill bit, a drill bit of different sizes, or directly build a threaded drill bit. This way, can it be used to drill holes and cut threads inside, isn't it more convenient?" Zhang Nan said.
Chapter completed!