ps: Thank you Brother Skeleton Doll for the reward, and thank you Brother Qianshui for the 4,000+ chapters. Today is already 10,000 words, Baozi has worked very hard! ! ! Please collect, recommend, reward, and vote monthly. Let¡¯s go strong, brothers! ! ! ! ! ! ! ! After a short sleep, he slept until dawn. After Chen Er got up and rubbed his hazy eyes, he finally returned to a state of full energy. Looking at the thick drawings on the table, Chen Er quickly sorted them out. These things are precious, and future improvements will all depend on them. Just as the drawings were sorted and put away, there was a knock on the door outside. Li Jun opened the door and said: "Second brother, Wang Yong is here. We can finally discuss the issue of the improved sniper rifle today." Come on." Chen Er quickly put on his coat and walked outside with Li Jun. Chen Er was also full of expectations for what Li Jun and Wang Yong thought, hoping that they would not disappoint him. When Wang Yong saw Chen Er come out, he went up and gave him a big hug, which made Chen Er feel a little overwhelmed. If this were placed in the 21st century, Chen Er might think that Wang Yong has that kind of hobby and that he is not a suitable candidate for a good gay friend. After a few pleasantries, we got down to business. Wang Yong said: "Li Jun and I wanted to use the sniper rifle drawings you developed to make improvements, but we encountered some problems." Li Jun also nodded and said: "Yes, we all have the drawings of the firearms." It's drawn. But we always feel that there is something wrong, and we can't find it for a while. Second brother, please show us." As he said this, Li Jun took out a stack of drawings and put them in front of Chen Er. After a quick glance, I knew in my heart that this improved model was nothing more than a improvement on the shooting distance and bullets. But the two people ignored a huge problem. When the bullet changes the barrel, the gun must also make corresponding changes. Although they increased the diameter of the bullet and the barrel, they neglected the length of the barrel. This will directly cause the initial velocity of the bullet to change, thereby affecting the range of the bullet. It seems like a minor problem. But it is definitely a huge hidden danger for the soldiers performing tasks. Chen Er took out a drawing and said: "Look here, the length of the barrel can be appropriately lengthened by 30 millimeters. In this way, the bullet will have a big improvement in terms of initial velocity and stability, and its power will be greatly improved." It may also grow exponentially." Li Jun and Wang Yong looked at the place pointed out by Chen Er carefully. Li Jun slapped his thigh and said: "Oh, why didn't I see it? I finally found the problem." Wang Yong couldn't help but extended his thumb to Chen Er, and while looking at the drawings, he praised: "Chen Er Second, I am completely convinced this time. No wonder the master said that your future achievements are limitless. It seems that we can't keep up with you. "The problem has been solved, and now everyone is happy. With the correct drawings in hand, Li Jun and Wang Yong couldn't wait to get involved in the production of firearms. When Chen Er saw that they didn't seem to need his help, he simply went back to the house and took out his own drawings and started making anti-tank mines. This is the most professional small arms research institute. There is no shortage of various materials, and Chen Er is a well-known figure in the institute, so he can almost use the materials at will. And even if there are situations that Chen Er doesn't know much about. The other masters will enthusiastically answer his questions. Chen Er feels that he has become the number one person under the director, and has even surpassed Zheng Guoqiang, the great director, in some aspects. In order to ensure that his development would be 100% successful, Chen Er certainly couldn't be careless about the materials and took two copies of each material. After a busy day, Chen Er finally moved everything he needed into the research room. Perhaps because they were afraid of disturbing Chen Er's rest, Li Jun and Wang Yong didn't know where to go to make their improved sniper rifles. Now the whole research room is empty. It happened to provide him with the best place. Just now Chen Er was thinking about how to tell them. This turned out to be an unexpected gain. Chen Er was originally the kind of person who would take action whenever he was told, not to mention that now that the materials were all available, he plunged headlong into the production of anti-tank mines. The Type 72 metal shell anti-tank mine uses a steel disc spring as the pressing mechanism. It is mainly used to fight against tracked vehicles. It has multiple explosion-resistant designs and the mine shell is sealed. It is definitely a weapon for defending enemy tanks and armored vehicles. Type 72 metal shell anti-tank mine diameter: 279 mm, height: 93 mm, total mine weight: 8 kg, charge weight: 5 kg. Detonation pressure: 180-400 kilograms, using 72-a explosion-resistant fuze or double impact fuze. Various data popped up in Chen Er's mind one by one. The first thing that needs to be solved is naturally the thunder shell. Because it adopts a fully sealed structure, it takes a lot of effort to make. The day flies by in a flashAfter going, Chen Er was immersed in his own research except for meal time, and Li Jun and Wang Yong did not come back for dinner. Murong Wan watched Chen Er tinkering with a tin box and didn't know what Chen Er was doing. When she was bored, she could only ask Wen Jing: "Wen Jing, look what Chen Er is doing. That iron box can also be a weapon. It looks weird." Wen Jing's face looked like you were asking me questions. Whose expression said: "I just don't know. To put it bluntly, we are in charge of logistics. As long as we don't let them starve, thinking so much is not a waste of brains." Murong Wan gave a hygienic eye and said : "Wen Jing, when did you become a little lazy? It seems that the saying 'those who are close to red are red and those who are close to ink are black' really make sense. You must have learned it from Li Jun, and you have also learned it badly." Wen Jing He quickly argued: "No, it's definitely not what you said. I have always been very diligent. It's just that there are some things that we need to think about. We are just laymen in the research of this weapon, so we should be diligent even if we want to be diligent." If you don¡¯t want to get up, let¡¯s go, it¡¯s time to get food again.¡± The two of them walked towards the canteen while talking and laughing. As the saying goes, the beauty effect is very effective everywhere. Of course, there is no way to verify who said this saying. However, one clue can be seen from Wen Jing and Murong Wan's daily meal preparation. Basically, the two of them do not have to queue. Even if they queue up, someone will always take the initiative to make room for them. It is called ladies first. Who knows what they are thinking. After dinner, Chen Er continued to work, seemingly turning a blind eye to the two beauties in front of him. It wasn't until very late that I put down my tools. At this time, Li Jun also came back. The two of them said hello and went to sleep. Day after day passed like this, and a week passed in such a monotonous and challenging day. Chen Er's production of anti-tank mines seemed to be coming to an end. Li Jun came back very early that day. Although his eyes were a little dark, he still couldn't hide his excitement, because the sniper rifle was finally successfully developed. Moreover, Li Jun and Wang Yong had already gone to the shooting range to try out the guns, and there were no problems at all. He was here to report the good news. But Chen Er was not here at this time. Because he was going to take the final step, the assembly of anti-tank mines was also full of dangers, so he had to choose a quiet place. That's five kilograms. It's not just five kilograms of rice. Once something goes wrong, the consequences will definitely be very serious, so he can't tolerate any interruption or distraction. Only by concentrating can he achieve the best state. After waiting for a long time, Li Jun didn't see Chen Er, and he felt a little anxious. Just at this time, Wen Jing and Murong Wan came back from cooking. Li Jun hurriedly asked: "Wen Jing, where is the second brother? I've been waiting for a long time, but I still haven't seen him?" Wen Jing looked around and said, "I don't know, there were two of us just now. Chen Er was still here when he left, maybe he went to the toilet. Besides, it's already dinner time, I believe he won't go far." This time Wen Jing's guess didn't work until ten o'clock in the evening. At around 1 o'clock, Chen Ercai came back with a tired look on his face, still carrying a big iron box in his hand. Li Jun quickly stepped forward and asked: "Second brother, where have you been? We have been waiting for you for a long time. If you don't come back, we will mobilize everyone to find you." Chen Er just He nodded mechanically, looking at the lunch box on the table, his eyes finally regained some clarity. He didn't care that the food was already cold, so he picked it up and started eating, looking like a starving ghost reincarnated. The three people watching on the side were dumbfounded. Wen Jing pinched Li Jun and said, "I'm not dreaming. Chen Er just didn't eat for a long time. It's not like this." Li Jun was treated like this by Wen Jing. Squeeze, and naturally there was a sound of "pain", which suddenly pulled the three people into reality. Wen Jing said to herself: "It seems that I am not dreaming. This is really real. It is really magical." Li Jun's arm was a little painful when Wen Jing pinched it, but he did not dare to attack the person he liked. I could endure it silently as if I was crying. At this time, Chen Er had also finished eating. Li Jun couldn't wait to say: "Second brother, our sniper rifle has been successfully developed and has been taken to the shooting range for test firing. As expected, the power is as expected. It's a lot bigger, and Director Zheng is very satisfied with this gun. " Chen Er said "Yes" mechanically and walked towards his house. His steps seemed a little frivolous, as if he was drunk. Average. The three of them did not dare to disturb Chen Er. They could only feel relieved after watching Chen Er enter the house. Everything could only be discussed tomorrow. The next day Chen ErHe had a good sleep, and when he opened his eyes and looked at the watch, it was already past seven o'clock. This was definitely a first in history for him who usually got up after six o'clock to exercise. But thinking back to yesterday's scene, Chen Er still broke out in a cold sweat. Yesterday, there was a slight flaw in the final assembly of the anti-tank mine. It was just because the key material was not dense enough. Fortunately, he replaced it quickly, and it almost failed. . The consequence of failure might be an explosion on the spot. It can be considered that I wandered around the gate of hell and came back again. To say that God has been kind to me, things like time traveling have happened to me, and I will not let myself die so easily. Chen Er stretched out and opened the door. But the scene that caught his eye shocked him once again. He shouted to Murong Wan who was standing there and seemed to be reaching for something on the top of the cabinet: "Don't move." Murong Wan was stunned for a moment and then asked: "What's wrong with Chen Er? Is there a mouse on the ground? Chen Er walked over carefully and said, "My eldest lady, do you know what you are stepping on?" Murong Wan shook her head and said, "Isn't this just an iron box? It's not a treasure. I want it." I couldn't reach the things on the top of the cabinet, so I used it as a stepping stone. You won't be angry because of this," Chen Er cried helplessly. This is really an aunt-like figure, holding an anti-tank mine as a stepping stone. This is simply like the birthday man hanging himself. My own life is too long. The conversation between the two people inevitably attracted Wen Jing and Li Jun. After they opened the door, they asked in unison: "What are you doing?" Chen Er pointed to the iron box at Murong Wan's feet and said: " Look at that, she actually stood up. " Wen Jing glanced at it and said, "What's new about this? It's just a broken iron box. Just ask Wan'er to come down and return it to you. It's not a treasure." Jun also nodded, obviously agreeing with Wen Jing's statement, Murong Wan made a move to get down from above. "Don't move," Chen Er stopped loudly, "What do you know? This is not an ordinary iron box. This is an anti-tank mine with five kilograms in it. If it really detonated here, let alone Murong Wan said, we will all be doomed if we follow him." Hearing that it was a landmine. Murong Wan's legs were trembling even more. She actually stood on top of the mine. This time, she was completely done. Wen Jing was so frightened that she covered her mouth. Li Jun also had a shocked expression on his face. He looked at Chen Er and said: "Second brother, you have been studying this thing for more than a week and have been forgetting food and sleep. What should we do now? We can't Let's face death." Chen Er said helplessly: "Now we can only block it. Since Murong Wan has not been able to detonate the mine's pressing device, there should be no big problem. " As for that. Chen Er had put aside the damn pressure detonation data a long time ago. It was theoretical data, and the materials of this era did not meet the best standards. Who knows if Murong Wan had jumped on it just now, whether it would have detonated the mines. Woolen cloth. Chen Er carefully walked up to Murong Wan and said, "Don't be nervous. I will carry you down slowly in a while. Remember not to step hard on the landmines under your feet." Murong Wan's forehead was already full of blood. Sweat, he didn't care about that much at this time. It was better to be hugged by Chen Er than to be blown to pieces. Five kilograms, maybe a bit worse than being broken into pieces. Chen Er carefully put one of his hands through Murong Wan's armpit, and placed the other hand on the crook of Murong Wan's leg. With both hands, he easily picked up Murong Wan. Murong Wan also quickly hugged Chen Er and closed her eyes tightly. What she thought in her mind was that even death was worth it. After all, she died in the arms of the person she loved. At this time, Chen Er also breathed a sigh of relief. It seemed that his production was quite qualified, plus Murong Wan was relatively light. If the man standing on top was a 180-pound man, Chen Erzhen didn't know whether the mine would explode. The danger was finally lifted. Murong Wan broke away from Chen Er's arms with a blushing face. Although the action just now was a bit awkward, and even Murong Wan felt Chen Er's heartbeat, the fear was still too much now. That slight throbbing caused by emotion. Chen Er had a better memory this time and carefully placed the anti-tank mine in a safe cabinet. Originally, something like this shouldn't have happened. It was all because I was too tired yesterday, and for a moment I forgot to put this iron guy in a safe place. Fortunately, Murong Wan had a near-miss today, otherwise Chen Er would have had to live with a lifetime of guilt and repentance. b