Sergeant Zhang found that Qin Shuai was very strange about the environment in which this old man lived.

He explained seriously: "These items, including money and weapons, were looted by pirates, and we plundered them and stored them here to be handed over, but in the past two years, because of the tension of the alien warfare, the leaders no longer need to give us money and weapons." These things are left for us to use temporarily. The old man, he just looked at the things he was studying, machine guns and small cannon barrels, in his room, and by the way, he looked at the supplies. Sometimes we are really afraid of going off, but he is not afraid, as for the old man's living habits are like this, in terms of food, he passes food to him from the window every day, and he doesn't like to eat breakfast every day. At noon and dinner, there are four dishes and one soup, and each meal is given to him, and it is delivered to the window on time according to his amount of food. In other aspects, such as when he needs convenience, there is a bathroom there, and the pipe can go directly to the downstairs bathroom, so it is rinsed, so he basically stays at home. ”

When they were about to enter the house, they suddenly heard the faint voice of the old man inside, and asked who they were, and Sergeant Zhang said that it was him, and he knew Sergeant Zhang, so he came and opened the door, and saw that he was followed by a strange young man, and was immediately displeased, and wanted them to leave quickly.

But Sergeant Zhang said that he was his friend, so he reluctantly let them into the room, and Qin Shuai saw some things covered with delicate tablecloths, which should be machine guns or the like, but they must be old-fashioned.

Old man: "I've been in this house for some years, don't laugh, especially young people like you, you shouldn't have seen such an old house, this thing is also old, don't touch it, just look at it." ”

He immediately put on white gloves, and then took a remote control, a slender robotic arm like a robot, lifted a tablecloth, and a straight, polished machine gun immediately came into view.

Although it is an old model, the majesty is self-evident. Qin Shuai was dumbfounded. Admired.

Qin Shuai: "I really can't imagine that there are so many treasures near the bunker here, Commander Zhang, but can you just let the old man watch it alone?" ”

When Qin Shuai said this, the old man and Sergeant Zhang were a little surprised, how could he say that these things were treasures? Scrap copper and rotten iron are almost the same, but it looks slightly more beautiful than scrap copper and rotten iron, but Qin Shuai said that the estimated things in his house should be worth millions, Sergeant Zhang couldn't believe it, and the old man felt that he had heard it wrong.

Qin Shuai said: "I generally know some knowledge of firearms...... Helps to understand how machine guns work. You see, your small cannon barrel was created to imitate the structure of a large cannon, although it is small, but it is fully functional, using the high-pressure pressure of a large amount of gas generated by the rapid combustion of a propellant to accelerate the bullet and shoot out of the barrel. This is also the knowledge of ballistics, and the cannon is the earliest and simplest application of this principle. A cannon is actually a metal tube that is closed at one end and open at the other. The closed end has a small lead hole. When loading the cannon, gunpowder was poured first, and then the shells were fired. Gunpowder and shells are placed at the tail of the cannon, at the back of the bore, which is the open space in the cannon. When preparing for the cannon to fire, the lead wire is passed through the lead hole and extended down to the gunpowder. Ignite the fuse to fire the cannon. The flame burns along the fuse, which eventually ignites the gunpowder. ”

“…… Gunpowder burns rapidly after ignition, producing a large amount of high-pressure gas. The hot gas exerts extreme pressure on the end of the shell close to the gunpowder, which far exceeds the pressure exerted by the air on the other side, creating a pressure difference. The pressure difference accelerates the shell and pushes it out of the chamber. The first hand-held pistols were actually mini-cannons – filled with gunpowder, put steel balls and ignited the fuse. However, this technique was eventually replaced by trigger-activated weapons, such as flint for flintlock pistols and firing caps for fire cap guns. ”

Qin Shuai: "This small cannon of yours, don't look at it for some years, but this thing is very valuable, so I really don't recommend that you put it in this house directly, it should be on the safe." ”

The old man was confused by Qin Shuai's words, he felt that what the young man said was a bit mysterious, but there was a little truth, Sergeant Zhang believed it, but they didn't have such a big safe here, so they had to make one temporarily, and they were not very good at designing, but Qin Shuai said that he could help, but the premise was that he could see what the two scholars were studying before, and he was very interested.

Sergeant Zhang agreed, because the key was in the old man's hand, it was in another room, and they rarely went there, and they only went to clean it once a week, and they guarded it very tightly. And let Qin Shuai make a guarantee, in case he sees any inspiration, he can't build that weapon 100% intact.

Qin Shuai: "The more you say this, the more I want to see, what is it?" ”

Sergeant Zhang: "Then it will only be tomorrow during the day, because we don't have electric lights in that room." As soon as you turn on the light, there will be an explosion in the room, which is very scary, so all the power is cut off. ”

Qin Shuai asked: "Isn't the light of the mobile phone and the flashlight good?" ”

"Young man, that thing is like an evil door, anyway, it can't use the electricity of electronic products."

The old man said mysteriously. Qin Shuai probably guessed eight or nine points, this thing should be repulsive to electricity.

After a few people greeted each other, they visited these things of the old man, Qin Shuai couldn't put it down, the old man didn't feel very valuable, but these things seemed to be like his old comrades-in-arms, they were all eliminated from the battlefield, he was like a comrade-in-arms who couldn't let go, looking at it every day.

It's just that I didn't expect Qin Shuai to always say that they have great value, and the old man looks more and more like them, so he hopes that Qin Shuai can often visit him, Sergeant Zhang didn't expect Qin Shuai to be so popular, and Qin Shuai's valuation is also very interested.

These things, if they are worthless and rusty for a long time, it is better to auction them off, Sergeant Zhang has such an idea, but Qin Shuai said to leave them here for the time being, but he hopes to make a safe, if Sergeant Zhang can find suitable materials for him, he is happy to work for him.

The two of them reached an agreement, and they also negotiated the conditions with each other, and when it was daylight tomorrow, Sergeant Major Zhang was responsible for a group of people looking for the materials for the safe, and Qin Shuai was looking at those more magical weapons.