"Ding, the host completes the hidden task of providing 100 million laid-off workers with reemployment positions, reward: the design of a new pistol."

Liu Yimiao returned home after designing the inverter air conditioner, and saw that Lei Dajun had already prepared the meal.

"Okay, Lao Lei, you still have this craft, this dish looks so beautiful." Liu Yimiao saw that the dishes made by Lei Dajun had been arranged into a painting.

Lei Dajun said with a smile, "This dish is called "A Reed Crossing the River", which is made of eggs and green vegetables, and it looks good. ”

Liu Yimiao pointed to another dish, "Aren't these two lobsters?" ”

Lei Dajun pointed to the broccoli ball on the shrimp, "Hehe, this is called Shuanglong Playing Pearl." ”

Liu Yimiao said, "Okay, Lao Lei, I thought you couldn't eat on time at home, and you learned this." ”

Lei Dajun said with a smile, "One is to celebrate your homecoming, and the other is that I have some ideas recently, we have eaten and said, today is a good day, open a red bar." ”

After Liu Yimiao sat down, he realized that "our house seems to be very cool." ”

Lei Dajun peeled shrimp for Liu Yimiao, and said, "As soon as the air conditioner was produced, Yuanyuan brought the first batch of air conditioners to us, saying that it was summer, and the original air conditioner had been used for a few years, and the refrigeration effect was not good, so it was just replaced." However, this air conditioner has a good cooling effect, there is no noise, and you don't say that I forgot that I have turned on the air conditioner. ”

Liu Yimiao felt it, "This air conditioner also has a sterilization effect, don't worry about the accumulation of bacteria in the house, and children can also use it with confidence." It seems that you are really happy today, and you have to drink red wine. ”

Lei Dajun nodded, "I'll say in a while, let's eat first." ”

After eating, cleaning up the dishes and chopsticks, Lei Dajun took Liu Yimiao to the study, "I recently researched the data and found that there are many problems with the pistols made in our country, you look at the data." Lei Dajun said and gave a piece of paper to Liu Yimiao, "And the current pistol body is fully loaded with pistol bullets weighing 943 grams, and the rate of fire is 650 rounds / min; The life of the pistol is in three thousand rounds. Pistols have a number of disadvantages: bullets jam, low accuracy, resulting in low life. There are two types of 5.8 mm and 9 mm, and although they are both Type 92 pistols, the bullets cannot be shared, and it will be fatal if the bullets are mixed up during combat. So I came up with the idea of developing a new pistol. Later, I specially learned about engineering, materials science and other knowledge, and initially prepared to transform bullets, magazines, gun life, and accuracy. ”

Liu Yimiao nodded, "Our country is getting richer and stronger now, and many technologies are still at the forefront of the world, attracting the attention of foreigners, and the methods of crime trafficking groups are becoming more and more sophisticated, so our own weapons have to keep up." Dajun, I also have some ideas, and I made a design drawing for you to see, what do you see? Liu Yimiao gave the blueprint of the system reward to Lei Dajun.

This drawing details the various parameters and methods of material processing, as well as the manufacture of the pistol.

Lei Dajun looked at it like a treasure.

Liu Yimiao went back to the bedroom to wash up and sleep, and she was very tired from being busy outside these days.

Liu Yimiao woke up and went to the study to see that Lei Dajun was writing and drawing on scratch paper with a pen against the drawing, and there were already more than a dozen pages of manuscript paper on the desk.

Liu Yimiao covered the drawings with his hands, and Lei Dajun's vision was blocked only to realize that it was Liu Yimiao, "Oh, it's dark this day, it should be turned on." ”

Liu Yimiao shook his head, "If you look at it again, I will confiscate the drawings." This drawing can't run, why do you have to read it in one go. Now let's cook together. ”

Lei Dajun straightened his waist and thumped his back, "Oh, I'm old, I almost can't straighten my waist after bending for a long time, and I used to be in ambush in the snow for a few days." Okay, I won't look at it, go grocery shopping. Lei Dajun carefully packed up his things and put them in the drawer.

Liu Yimiao said You wash the vegetables, I'll cook. You don't need to get much at night. ”

After the two of them finished eating, Lei Dajun still wanted to go to the study, Liu Yimiao stopped him, "I'll read the information tomorrow, and now watch TV with me, there seem to be a lot of TV series that solve the case and reason, you should also watch more, some things can't be thought of at all." It's good for your brain workout and won't waste your time. ”

The two watched "The Scene of the Crime" together, and Liu Yimiao sighed, "This case has to be bold and careful, and biological knowledge must be used to detect things at the blood and genetic levels, which is really eye-opening." ”

Lei Dajun nodded, "Some cases are put in ancient times, and even Bao Zheng can't do it." He may have speculated, but he could not arrest anyone without evidence. ”

Liu Yimiao and they watched two episodes of TV and were about to rest, Liu Yimiao said, "Dajun, you turn over and lie down, I will stand up and step on your waist, I am still very light." ”

Liu Yimiao stepped on it for a while and found that Lei Dajun had fallen asleep, so she smiled helplessly and rested.

In the following days, Lei Dajun continued to study the data, and later he applied to develop it after eating the information thoroughly. This time, Liu Yimiao sent him away.

Lei Dajun also instructed Liu Yimiao several times before leaving.

It took half a year for Lei Dajun to return.

Lei Dajun explained, "The gun was made a long time ago, but it was finally decided after many experiments. ”

Lei Dajun introduced the new gun: the gun fires a nine-millimeter Paraberu female pistol round; The grip is made of aluminum alloy, the body weighs 0.9 kg, and the muzzle velocity is 335 m/s. The effective firing range is fifty meters; The double-row magazine capacity is fifteen rounds. The shooting accuracy is high, and the opening and closing of the gun is completed by the swing up and down of the locking iron, which avoids the impact on the projectile when the barrel swings up and down. The gun has good maintenance, low failure rate, the gun can adapt to harsh combat environments such as sand, mud, dust, and water, and the service life of the barrel is 10,000 rounds. The gun will not occur by chance when it falls from a height of two meters, and once it is damaged in battle, it will take no more than half an hour to repair a major failure and no more than ten minutes to repair a minor failure. This phone is human-machine optimized and has a reasonable design.

After waiting for the gun to be used in the troops, the response was very good, and Lei Dajun was also awarded a special merit of honoring and li.

Lei Dajun was very excited, and called the children to gather. Lei Dajun is over 70 years old, and he is one of the few people in China who can make meritorious contributions at his age, so he is very proud.