Chapter 44 Pistol Success Diving Equipment

Seeing that Zhang Zhimu was very serious, Xiaohu had no choice but to tremble and follow Zhang Zhimu's hands into the water, holding the tire with both arms, and when he could hold the tire and float on the water, he slowly stopped being nervous. Zhang Zhimu helped him push him in the water, wanting him to get used to it. At first, Xiaohu was still very nervous when his feet did not land, but when he felt the joy of being able to float on the water, he was happy. Zhang Zhimu taught him to use his feet to draw water, and slowly Xiaohu was able to use his feet to hit water and walked forward by himself. That's the joy. But after a while, I was too tired to do it.

Then, Zhang Zhimu let Xiaohu go ashore and replaced Xiaoqing. When Xiaoqing dared to fetch water by himself and left, Xiaohu shouted on the shore that he was hungry. made Xiaoqing also say that she was hungry.

Zhang Zhimu said: "Okay, even if it is the first time you go into the water today to get used to it." Let's go out for a bite to eat and then come home. ”

Xiaoqing and Xiaohu were both happy: "Ou! With a sound, Xiaoqing said, "I want to eat choppy noodles." I want a big bowl. ”

Xiaohu was still hesitating and said, "I'll see what I'll eat later." ”

After the three of them changed their clothes, Zhang Zhimu carried a big bag on his back, pulling Xiaoqing with one hand and Xiaohu with the other. At this time, the two children were the happiest moment, Xiaoqing asked, "Uncle, when will Xiaohu and I be able to swim like you." ”

Zhang Zhimu said: "As long as I have time, I will bring you here, it won't take long." In the future, I will teach you to dive, that is, to swim underwater. At this time, Zhang Zhimu suddenly thought that he must let Li Yunhe get some diving equipment tomorrow, that thing does not have too much technical content. Fortunately, I still had a diving certificate in my previous life, and those diving lessons cost a lot of money. It seems that if you learn more things on a regular basis, you may be able to use them sometimes.

But Xiaohu thought differently, he asked: "Do we all go to eat something good after swimming?" ”

Xiaoqing and Zhang Zhimu couldn't help laughing, Zhang Zhimu said: "Of course, we go to eat good things every time we swim." ”

Xiaoqing said: "Xiaohu is a little glutton. ”

Xiaohu didn't think anymore and said: "I want to eat good things, and I want my uncle to take me to eat." Let those children see it. ”

Zhang Zhimu knows that the children are happy as long as they are with him, and he feels warm in his heart.

Although the weather is very cold and late in December, many taverns and small restaurants in Yaogang have not closed. Those who could not afford to open a shop carried a pair of burdens, with pots and pans at one end of the stove and the other, and they set up small stalls under the squeaky and bright street lamps to sell all kinds of snacks. Xiaoqing and Xiaohu insist on eating at the food stall. The three of them strolled around and chose what to eat. Xiaoqing was very resolute and ate a big bowl of haggis noodles, and Xiaohu wanted to eat his head. Zhang Zhimu said: "That's it, Xiaohu, the two of us will accompany Xiaoqing to eat a bowl of haggis noodles, and we will each eat half a bowl." Let's go back to the head. ”

Xiaohu said that he was happy this time and said, "Okay." ”

After Xiaoqing finished ordering, she sat on the stool and said, "Uncle, do you remember when you came to our house on the first day, my mother and I went to Xiurong?" ”

Zhang Zhimu said: "Of course I remember. ”

Xiaoqing smiled and said: "Oh, when I arrived in Xiurong that day, my mother and I ate haggis noodles, and at that time I thought that the best thing in the world was haggis noodles." So, after not eating haggis noodles for a long time, I can't think about it. ”

Zhang Zhimu said: "No matter when you want to eat, just tell me, and I will bring you to eat." ”

"Really?" Xiaoqing asked.

Zhang Zhimu said: "Really. And when Xiaohu wants to eat, just tell me. ”

Although Zhang Zhimu was a little worried about hygiene, he still didn't resist the temptation of haggis noodles and shared a bowl with Xiaohu. Xiaoqing had a good stomach and ate a big bowl by herself. After swimming, people are particularly hungry.

Xiaohu is also very good at eating, and the mind he has to eat is a good thing. The brain is a halal food, in a bowl of soup paste, put three pieces of fat mutton, a piece of lotus vegetables, and a long yam. The condiments in the soup include rice wine, sake lees and astragalus. When you taste it, you can feel the mixed aroma of wine, medicine and mutton, which is delicious and delicious, and the more you eat, the more fragrant it becomes. No wonder Xiaohu is willing to eat this thing.

Zhang Zhimu asked: "How does Xiaohu know that this thing is delicious?" ”

Xiaohu said, "My aunt has taken me to eat." ”

It turned out that Yang Yulin had led him to eat, no wonder he wanted to eat this. Xiaoqing touched her stomach and said, "I also want to eat my head, but I really can't eat it." ”

Zhang Zhimu laughed and said: "Next time, don't be so stupid, eat too much at once, and you won't be able to eat any more good things." ”

Watching the little tiger gobble up food, Zhang Zhimu thought of his children and wife in his previous life, and couldn't help but feel a little sad, but fortunately, under the light, the two children didn't pay attention to Zhang Zhimu's expression.

As soon as he arrived at the office in the morning, Zhang Zhimu asked Yang Yulin to call Li Yunhe over.

As soon as Li Yunhe entered the house, he said: "It's just right, Li Jing is back, let's try the gun today, and we'll talk about other things when we come back." ”

Zhang Zhimu was just about to speak, when Yang Yulin came in and said, "Ningde invites you to go over with Uncle Chen, and Uncle Chen is waiting for you in the command center." ”

Zhang Zhimu said: "Li Yunhe, you are waiting for me here, and we will be back in a while." ”

Zhang Zhimu and Chen Yufeng came to Ningde's house and saw that Zhang Bingchen had finished changing Ningde's medicine. Zhang Bingchen said: "Lord Ning's health is good, and his spirit is much better this morning." ”

Zhang Zhimu saw that although Ning De was still very weak, his eyes were already bright.

Seeing Zhang Zhimu and Chen Yufeng coming in, Ning De said with a very empty breath: "There is something wrong, I must explain it to you first, otherwise I can't let it go when I lie down." ”

Zhang Zhimu said: "My lord, don't worry, speak slowly." ”

"Zhang Dongjia, don't call you an adult in the future. Let's just have some. ”

"Okay, it's up to you."

Ning De said: "I guess I won't be able to die for the time being, but the court won't let me go." Today I want to hand over to you my soldiers who have followed me for many years, and I hope you will accept them. Otherwise, I won't be able to turn a blind eye. ”

"General Ning, don't worry. We know that the Imperial Court will soon send someone to see you about your situation, and when the time comes, you will have to cooperate, and you must pretend to be delirious. But no matter what, we will not hand you over to the court, if we hand you over to the court, you will die, and we can't watch our old friends have a hard time. As for your subordinates, I see it this way. If there are those who are willing to continue to serve as officers and soldiers, we can send them to General Zhou Yuji and let them continue to serve as soldiers. If you are willing to stay in the kiln, we are arranging for them. What do you think? Zhang Zhimu said.

Ningde nodded and said, "Okay." I wonder what you're going to do with them? ”

Zhang Zhimu said: "General Ning, I know your soldiers, and I also know that they have followed you for many years, but many of them are also old. They can't be soldiers for the rest of their lives. I think so, among the soldiers, the younger ones want to be selected and join our ranks in the kiln. The older ones also want to choose and let them join the police force, so that they also have a stable job and have the opportunity to settle down. The construction of our kiln gang needs a lot of people, your subordinates have been in the army for many years, they are organized and disciplined, we want to arrange for them to be small leaders at various construction sites and lead the migrant workers to work. For those who are disabled and can work, we also try to arrange suitable jobs for them, such as guarding the door. What do you think? ”

Ning De burst into tears, and the corners of his mouth trembled and said, "You guys have thought it too well. Our soldiers can still have a place to go and a home when they are old, which they dare not imagine. Most of the veterans died of old age in the barracks. Great, if that's the case, I'll be blind when I die. But, to be honest with me, are you trying the other way around? ”

"Where, we just sent 500,000 taels of silver and 5 million yuan of kiln coins to the emperor. We don't do anything rebellious. But you can also see that Li Zicheng will soon go straight to Shanxi. Our strategy is to use our defense to wear them down and then retake what they occupy. However, the imperial court is not capable of taking over these places, and we can't ignore them, so we will organize autonomous organizations to take over those places, which requires our own police, which used to be called government officials. We can't use those servants of the past anymore. If we don't recapture the place occupied by Li Zicheng, we won't be able to survive on our own. Zhang Zhimu replied.

Ning De didn't understand what Zhang Zhimu and the others thought, but he understood that his subordinates would get good arrangements from the kiln gang people, and that was enough.

Chen Yufeng said: "General Ning, you can rest assured that you can recuperate." Everything will be arranged for us. Your biggest thing right now is to take care of your body. When you are well, you are willing to go back to Tongguan and you will go back. At that time, Tongguan will be different. ”

Bidding farewell to Ningde, on the way back, Zhang Zhimu said, "Uncle Chen, Yunhe is still waiting for me to inspect it." Let's take a look. ”

"Okay, what's this stinky boy up again?" Chen Yufeng said.

"This time, they were still experimenting with pistols, and he said that the change was almost over." Zhang Zhimu said.

When I returned to the office, I heard that it was another test pistol, so of course Yang Yulin was going to follow.

Li Yunhe's shooting range, where Li Jing and Li Wei have been waiting for a long time.

This time, Li Yunhe appeared very confident. He asked people to move the pistol and bullets from the carriage, took a ** in front of everyone, loaded the bullets, and shot a few shots at the target. Then handed the gun to Zhang Zhimu, Zhang Zhimu knew that the gun was a 9mm pistol when he heard the sound, Zhang Zhimu picked up the gun, stretched out his arm and aimed at the target "dang" to shoot a shot, although he felt that the recoil was not small, but it was much better than last time. It is obvious that the muzzle flame is much smaller, and the sound is brittle. Then shoot a few more shots, and there is already a target on the fifteen-meter target. Zhang Zhimu knew that the pistol could be used.

At this time, Yang Yulin also came over with another gun and fought "dangdang".

Zhang Zhimu went back and handed the gun to Li Yunhe and said, "I think this gun will work." Get on the bullet and let Uncle Chen try it. ”

Chen Yufeng finished fifteen rounds of ammunition in one go, and came back and said, "Great, practice hard." This shot can sweep the world. Li Jing They can use it even more, no one can see such a little thing hidden on their bodies, and they can be used like rifles at close range. ”

When Li Jing and Li Wei finished fighting, they all came around. Li Yunhe asked, "How is it, can you try?" ”

Li Jing said: "Hurry up and get us 500, we have to practice quickly." This gun can't be practiced well. ”

Li Wei said: "It's not convenient for our artillery to be equipped with rifles, so let's all match them with pistols." ”

Yang Yulin said: "In the future, Li Jing and they will definitely go to the front line, and the guard work will have our female soldiers." So we have to be armed with pistols. ”

Chen Yufeng said: "In the future, front-line officers will not be able to match their rifles like soldiers. Let's all get a pistol. ”

Zhang Zhimu said: "It's a 9mm pistol, what about the 11.45mm gun?" ”

"Okay, let's try it all out." Li Yunhe said, and asked people to take out an 11.45 mm caliber pistol.

However, after Zhang Zhimu fired a shot, he no longer dared to shoot with one hand, and fired a few shots with both hands. Because the recoil of the grab is still too great.

Chen Yufeng saw Zhang Zhimu's hard work, and also shot a few times. Then he said: "This pistol of the Great Mouth Sutra is not good if you don't have enough hand strength, and if you have enough hand strength, you must also practice it well." I watched a blind bear be killed with one shot. ”

Li Jing finished trying them and said: "Large-caliber guns can be used under special circumstances, but if you shoot people at close range, 9 mm caliber is enough." ”

Zhang Zhimu said: "Li Jing, your special forces, using a pistol is a hurdle to pass, not only to be able to shoot quickly but also to be able to shoot with both hands, shoot in rapid movement, and shoot on a horse. ”

Li Jing touched her head and said, "That's going to cost a lot of bullets." In this way, our people should help Li Yunhe to inspect and rob. ”

Yang Yulin said: "Li Yunhe should hurry back and produce pistols." However, this pistol is still a little heavier, if only it were a little smaller. ”

Zhang Zhimu said: "After this battle, Li Yunhe will study the small robbery." Let's go back and produce a batch of these pistols as soon as possible. However, the production of rifles must not be affected. That's all that matters. ”

Li Yunhe said: "Don't worry, I stopped all the musket production lines and went all out to produce rifles. To produce pistols I will not use them people. ”

On the way back to Yaogang, Zhang Zhimu let Li Yunhe get into his car. In the car, Zhang Zhimu said: "Yunhe, when you go back, you arrange for someone to get me a batch of diving equipment." ”

"You just tell me what it is." Li Yunhe said.

Zhang Zhimu said: "There are a lot of things, a total of water mirrors, snorkels, fins, high-pressure air cylinders, pressure reducing valves, instruments, respirators, diving suits, diving vests, lead, and other things." I'll tell you the same thing when I get back to the office. ”

Back in the office, Zhang Zhimu first drew a water mirror diagram for Li Yunhe. If the water mirror is simple to make, it is a piece of tempered glass pressed together with a copper ring and a ring of rubber, so that it can be buckled on the eyes and nose.

Zhang Zhimu told Li Yunhe: "This water mirror is simple, as long as it is harder in contact with the glass, and softer in contact with the face." It's a little more comfortable to wear this way. You can just use brass to make this snorkel. The bite here should be made of hard rubber, and the one-way membrane at the other end should be made of softer rubber. ”

Li Yunhe said: "I know that after wearing this water mirror, after wearing a rubber band, the rubber and the face will be pressed together when you go down to the water, and the water will not be able to enter the water mirror, and people can open their eyes to see things in the water." But what is this snorkel for? ”

Zhang Zhimu said: "We lie on the surface of the water with a water mirror, look at the things in the water, what should we do if we want to breathe? There has to be a tube coming out of the water to breathe, and we bite it out through our mouths. When the snorkel gets water, we have to get the water out or it chokes us. The one-way membrane is that when there is water in the breathing tube, we blow hard to blow the water out, but the water from the outside can't come in. This allows us to breathe continuously without having to look up on the water. Usually we connect the water mirror and the breathing tube together. ”

Li Yunhe said: "Ou, I understand. Needless to say, I'll just do the same. That high-pressure gas cylinder, pressure reducing valve, respirator, and pressure gauge are all in one, right? Zhang Zhimu said: "The key to diving equipment is these things you mentioned." I can't breathe without air underwater, so I have to go into the water with a bottle of compressed air. But we can't breathe into a bottle of compressed air, and then we'll be blown into balloons. Therefore, we must install a pressure reducing valve on the mouth of the air bottle, reduce the air coming out of the cylinder to a medium pressure of less than one megapascal, and then connect it to the secondary pressure reducing valve through a medium pressure pipe, and this secondary pressure reducing valve adjusts the pressure of the medium pressure air to be equal to the pressure of water. Because then we can breathe underwater. This secondary pressure regulator and the respirator are made together, and the respirator has a one-way membrane for draining water like the breathing tube, but the end is not connected to the air but to the outlet of the secondary pressure reducing valve. You see, there is also this gauge, which is generally composed of three kinds of gauges, including the pressure in the tank, the depth of the dive, and the compass. The pressure gauge is connected to the cylinder through a high-pressure pipe, without which we don't know how much gas is in the cylinder underwater, without the depth gauge we don't know how deep we dive, and without the compass we don't know how deep we do. ”

Li Yunhe scratched his head and said, "If one of these things goes wrong, they will kill people." I think I'm going to arrange for someone to do nothing and just study these things. If there is nothing rare in terms of technology, it is that the reliability requirements are too high. It's about human life. Let's talk about indicators, right? ”

Zhang Zhimu said: "These are light dives that I use, and strictly speaking, the diving depth cannot exceed 30 meters. Our steel cylinders are generally filled with 200 air pressures, but we have to leave room for pressure gauges and high-pressure pipes to withstand 300 pressures, and depth gauges to be able to measure 70 meters deep. The size of the gas bottle is just right to carry behind us, and sometimes we can carry two bottles. ”

Li Yunhe said: "Okay, I know this. And what about wetsuits, diving vests, and lead? ”

Zhang Zhimu said: "Let me talk about the diving vest first. As you will know, it is not easy for us to dive underwater. Because we have buoyancy ourselves. If we want to dive into the water, we have to have a belt tied to the lead and dive with us. But the lead is too heavy for us to come up. In order to adjust our gravity and buoyancy balance, we need to make a vest that can be inflated and deflated. Generally, one end of our first-stage pressure reducing valve is connected to the gas cylinder with high pressure, there are three medium-pressure outlets, and two of them are connected to the respirator of the second-stage pressure reducing valve, because one must be a backup. The other end is attached to this vest. That diving suit is there to protect the diver. We can usually make it with foam rubber, because it is warm and strong and snug. You just have to do what I do. ”

Li Yunhe said: "Then *** is killing people underwater? ”

Zhang Zhimu said: "It's not just killing, sometimes it's entangled in aquatic weeds or fishing nets, and you have to use *** to solve the problem." We're going to have to get diving lights in the future. But I'm going to assign tasks to Yangchang and let them get dry batteries. ”

Li Yunhe said: "It's very difficult to get these things, I don't know how useful these things are, just sneak over to sneak attack the enemy, right?" ”

Zhang Zhimu said: "Not only that, for example, if there is a problem with the propeller on our ship, we can't all get the boat ashore, right?" Can we send divers down to see if we can too? In the future, if we have any underwater construction work, we can use divers. ”

When Li Yunhe left, he said: "I'll organize people to do these things immediately, but you can't be too anxious, I know that this thing must not be in a hurry, it must be reliable." ”

When sending Li Yunhe out, Zhang Zhimu asked Yang Yulin to find Yangchang again.

Yangchang is now very familiar with Zhang Zhimu, and he is not as reserved as before. After he sat down, he said: "Mr. Zhang, in addition to me, there are four other people who are arranged to engage in electronic tubes with you this time, do you think it's okay?" ”

Zhang Zhimu said: "That's it at the beginning. But I'm not talking to you about tubes today. You're using lead-acid batteries now, and you're already using good ones. But one of the problems with that thing is that it's not easy to use. I want you to start working on dry batteries. ”

"Dry batteries?" Yangchang was a little puzzled.

Zhang Zhimu said: "Yes, dry battery. In fact, it is also a matter of converting chemical energy into electrical energy. But this time, we are going to use metal zinc, carbon electrodes, manganese dioxide, ammonium chloride and other things to make batteries. ”

As he spoke, Zhang Zhimu drew a structural diagram of a dry battery with a pencil and said: "You see that in the middle of our cylindrical battery, a graphite electrode rod is used as the positive electrode, and a mixture of graphite and manganese dioxide is wrapped on the outside. On the outside, this layer is made of ammonium chloride solution and starch mixed into a paste and coated on a layer of paper, and the outermost layer is a shell made of metal zinc. You just have to pack it up like this, and it's a battery. The voltage between their positive and negative poles is about a little bit of five volts. ”

Yangchang said: "It seems that it is not very difficult. ”

Zhang Zhimu said: "For the purification of manganese dioxide, you just go to Qingfengzi." They don't have classes this year, and when they have classes during the Chinese New Year, they won't have enough time. But you'll also need to get some small light bulbs that can be lit with two or three batteries. These small bulbs can later be used as electrical indicators. ”

Zhang Zhimu was talking in the house, and Yang Yulin came in and said, "Li Zhi is here, there is something urgent." ”

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Mechanics of Materials, Theoretical Mechanics, Elastic Mechanics, Fluid Mechanics. --Progress of "Memories of the Southern Song Dynasty".