At this time, Liu Yiyi suddenly walked to Dai Yanchou's side, circled around Dai Yanchou very seriously and curiously, suddenly stopped, and pointed at Dai Yanchou loudly: Let me tell you! This is an AN94 automatic rifle that fires 5.45 mm x 39 mm rounds, fires in single, two, and burst shots, with a total body weight of 3.85 kg, a total length of 728 mm when the stock is folded, and can be equipped with a detachable magazine of 30, 45 or 60 rounds.

Not only that, but it can also be equipped with scopes, night vision goggles, and grenade launchers. At a distance of 100 meters, the distance between the two rounds is less than 2 centimeters.

This gun was designed by the Russian Nikonov in the 20th century, based on the improved design of the AK74 automatic rifle of the former Soviet Kolashnikov. Its ingenious and unique technology is that, first, the principle of automatic mixed seating impulse is adopted, which greatly reduces the adverse effect of recoil on point dispersion, and second, the double-fire technology is adopted at the same time, that is, two burst shots are implemented at a high rate of fire of 1,800 rounds per minute, and then the rate of fire is reduced to the rate of fire of an ordinary rifle from the third round, that is, 600 rounds per minute.

In fact, the so-called principle of automatic mixed sitting impulse is to use two inner and outer receivers, the inner receiver accommodates the bolt assembly, and drives the bolt to move through the bolt frame to realize the mechanism actions of opening and closing, shelling, shelling, shelling, and ammunition feeding, and the locking mode is the bolt rotary locking. The inner receiver was connected with the barrel to form a large assembly that moved along the rails on the outer receiver. The recoil created by gunpowder gases when firing is carried out.

In this way, it will not act directly on the human body, but first act on the barrel and receiver, and then transmit to the human body through the outer receiver. After firing 2 rounds at a rate of 1,800 rounds per minute, the barrel continues to recoil, and only when the bullet leaves the muzzle does the recoil reach the shooter's shoulder. At this point, there was no longer any effect on the accuracy of the weapon.

This is the subtlety of the AN94 automatic rifle. You Dai Yanchou don't even know this, how do you use guns? You say you'll only use it, you won't say, okay, then you use this gun, I'll give you 30 rounds, 100 meters range, see how many you can hit? Li Zhuangzhuang, you go and prepare to shoot the target, the new one, you must not have hit it.

Yes, instructor! Li Zhuangzhuang agreed and left. Soon he was ready to return.

Dai Yanchou, let's start, Liu Yiyi ordered: single shot, 2 shots, continuous shots, you choose.

Dai Yanchou adjusted his posture, aimed, and pulled the trigger. After testing, it was strange that 18 shots hit the bull's-eye, 11 hit 9 rings, and 1 shot was launched in the 10-ring ring. After the 50-meter test of the pistol, 100 shots were hit, and the 100-meter test of the pistol, only 2 rounds were on the 10-ring line. Everyone present was amazed. Kabaro's eyebrows stretched and he laughed: Yiyi, can you agree? I said that the soldiers of my Yunnu Country recommended by Simi will not give me face!

Your Majesty, you have passed the grades and can join the Flamingo team! Liu Yiyi smiled apologetically at Kabalo: However, the next training may be stricter and more cruel, I hope she can stand it. Only by fighting all-round can you become the elite of the elite!

Du Ruolan was also full of joy, nodded incessantly, and shouted: Dai Yanchou, I order you to join the fourth training group of the Flamingo team, and obey all the commands of the team leader Di Fanzhou. Go ahead!

In this way, the day's military training is coming to an end, and it is time for the evening theory class again. Today's theory class is also Liu Yiyi's turn to speak. The team members sat in the hall of the camp. This is a makeshift military tent. All the facilities in the tent are relatively complete. Liu Yiyi did not prepare a speech, she could only explain it based on her memory and her own opinions. She didn't know if she would be able to teach the lesson well, but she had to be confident and not slack off. Liu Yiyi walked up to the podium very dignified and generous, glanced at it for a week, and then said calmly:

Comrades! Friends! We're happy to be here, and I'm glad you're all so enthusiastic. Tonight, this is the first theory lesson I will give you. Let's start with the numbers. Can anyone tell me where the numbers come from, what they are, what are the maximum and minimum numbers?

Report instructor, I don't want to listen to numbers, boring, what's new? Dai Yanchou suddenly raised his hand and reported: Please tell me something else.

Dai Yanchou, you first answer the question I just asked, and if you answer correctly, I will change the topic; I'm sorry, but you'll have to listen to you. Please answer!

Dai Yanchou thought about it, and still replied with some hesitation: Numbers were invented by the Arabs, but there is no maximum number and minimum number, only 10 Arabic numerals including 123456789 0. Complete!

Sit down! Your answer is incorrect! Liu Yiyi's sharp eyes quickly scanned the hall, and while criticizing Dai Yanchou, she continued to speak: Let me tell you, the largest number is called infinity, and the smallest number is called infinitesimal. You may ask, what do these numbers have to do with our training? I'm here to tell you that the stakes are great.

You all know the ancient Egyptian pyramids, but the mysterious numbers hidden in the ancient Egyptian pyramids have the same mystery as the ancient Hetuluo book of the Chinese nation. You probably don't know this, right? This secret is the secret of the entire universe, which can also be called the cosmic code.

The number in the pyramid is 142857, and only 3, 6, and 9 are missing. It seems to be an ordinary set of data, but it is very magical. Multiply 142857 by 1, 2, 3, 4, 5, and 6 respectively, and you will get repeating numbers starting with 1, 2, 3, 4, 5, and 6 respectively. Please take out your phone, open the calculator, and give it a try.

When 142857 is multiplied by 7, we get 999999 strange set of numbers; What's even stranger is that you divide 1, 2, 3, 4, 5, and 6 by 7 respectively, and you get this set of circular numbers. If you multiply this set of numbers by itself, you get 20408122449, and add the first part of this set of numbers, 20408, and the next part of the 122449, and get 142857 set of numbers.

There are many secrets about this set of numbers, please be interested in discussing them after class.

Now I will talk about the Hetuluo book of our Chinese nation. Hetuluo uses white dots and black dots to represent numbers, and there is no 0 as a number. According to the arrangement of numbers, a nine-house chart can be formed.

Liu Yiyi wrote on the blackboard:

4 9 2

3 5 7

8 1 6

It should be noted that each number represents several points; For example, 4 represents 4 points, 9 represents 9 points, 2 represents 2 points, and so on.

-

1 4 -3-

2 0 2

3 -4 1

In this way, the center of the nine houses becomes the number 0. You see, the mystery appeared, this group of nine house numbers, whether it is added horizontally, vertically, diagonally, the sum of its numbers is 0. Zero is nothing, and there is something out of nothing, and there is Tai Chi. The yin and yang fish in the center of Tai Chi represents one positive and one negative, and the sum of infinity and infinitesimal is also 0.

(End of chapter)