Because I am an adult in the Yin Mansion, although Dai Zi seems to be arrogant, but he also respects me, after greetings, I explained my intentions, and their ancestors and grandchildren entered the workshop, in fact, it is a small wooden house next to the blacksmith's workshop, on the table, on the wall, there are all kinds of drawings of guns, but they are all drawn with a brush, without the use of a ruler, it looks a little quaint style.

In addition, there are two schematic drawings of gun carriages clearly drawn with thin brushstrokes on the table, horizontal and vertical, which must be the work of Dai Lu.

Dai Lu can also speak, saying that on the premise of fully borrowing from the design plan of his ancestor, he added some ideas to design a smaller rear-loading gun, and explained the principle to me.

While Dai Zi and Xie Bi'an were talking, Dai Lu secretly said to me, "Actually, this refers to the artillery of the country before the First World War!"

I nodded heavily, understood, and let her continue.

"The casting material here in the underworld is okay, the wall of the cannon chamber can be cast thicker to prevent the explosion of the chamber, and the gunpowder process is also improvised, although it is not as good as the Yang Realm, but after changing to this rear loading design, it can increase the firing range by three or four times, forming a clear advantage over the enemy, and now the problem is, I want to add a device here that can automatically retract the barrel after it is fired, so as to reduce the recoil of the artillery fire, which can greatly improve the combat rate of fire and the accuracy and stability of the shot."

"You're saying that this device can't be built in the underworld?" I asked, I didn't understand too much, it was like a small thing like a telescope.

Yes, it's a hydraulic device with two pistons in it, and Dai Lu gestured to me, "After firing, through the hydraulic device, use the stroke of the piston to counteract the recoil, like this......

I still don't understand, but she's an expert, and she's sure she's okay.

I took out the set of paper, pens and stationery that the fox demon had bought for me from my bag, including a protractor, a triangle, etc., mainly a scale that allowed her to draw out the design as carefully as possible.

"Lord Wu, oops, you are so caring, you are lacking this set of tools!" Dai Lu said excitedly.

After a while, she drew the design of the hydraulic parts she needed, marked with detailed dimensions, specifications, etc.

"Let's mass-produce this kind of artillery in the underworld first, and it can be fired normally in normal times, even if it is captured by the enemy, there is no problem, and when we really need to increase the power of the artillery, we will definitely give the enemy a huge surprise when we install this thing!" Dai Lu smiled confidently.

"It's only half a meter long, it's really so amazing?" I asked with the drawings.

"Small things often have a lot of energy." Dai Lu gave me the feeling that he had talked about his boyfriend and knew a little bit about everything.

"How much do you need?" I asked, this is even simpler than making G98, hydraulic parts are a high-tech product in the underworld, a thing that cannot be phenomenad, but in modern times, it is no more ordinary, cars running on the street, next to each wheel, there is a hydraulic shock absorber cylinder, the principle is almost the same, the object on this cannon is probably equivalent to combining two shock absorbers in the opposite direction, and then welding them together.

At least it seems like that...

"It doesn't need many, two hundred." Dai Lu said.

"You have a limited capacity for cannons, do you?" I asked.

"Well, it's not easy to make two hundred a month."

I nodded, "I'll get this bag on me, and I'll send it to you in three days."

"That's great! We can try it out to see if it works well, and we can also calculate the range table of the new cannon in advance, produce it, and then ship it directly to the battlefield."

I reminded her, "Don't always think about being a designer, don't forget your old profession, which is to conduct."

"Thank you, Lord Wu, I will give full play to my strengths as soon as possible!"

As an engineer, how can you be promoted quickly, you have to go to the battlefield to reflect your ability and quality!

I carefully folded the drawings and put them in my bag, and without further ado, I decided to return to the Yang Realm immediately and let *** Ya hurry up to make this kind of part.

Xie Bi'an sent me out of the camp and asked me if I could find my way by myself.

I grinned and said, "I'm not familiar with the underworld, I can't find it, and if I get lost, I'll be in trouble, or, An'an, you can ride me on a horse and give me a ride, let's still be like when we came, okay?"

Xie Bi'an pursed his lips and smiled: "That's okay, it's better to work this seat again."