"What the hell is this Xiao Dong doing!" Just as Lu Jiadong was explaining the technical principles of shelled tail armor-piercing shells and the basic characteristics of composite armor to the experts and technicians of the tank development leading group in the general control hall, and expounding the importance of technological innovation with the help of two extremely important subsystems on these two new tanks, Zhao Rusong was pacing anxiously in the room on the second floor of the reception area of the Wanshan Factory's weapons and equipment comprehensive test site, stopping from time to time, looking at the sun outside the window that was gradually sinking in the west, his face was very anxious, and then he couldn't help muttering to himself again:

"What the hell is he doing?"

The Xiao Dong in Zhao Rusong's mouth is none other than his assistant Dong Fangzhuo, since because Lu Jiadong was stubborn and insisted on the so-called 100mm armor-piercing bullet test, Zhao Rusong, who thought he had been humiliated, left angrily from the general control hall in a fit of anger, returned to the room where he lived in the weapons and equipment test site, and without saying a word, he began to pack his things and prepare to leave this extremely sad place as soon as possible.

It's just that when he packed everything up, he suddenly found that the black briefcase containing a large number of important documents he was carrying with him could not be found anyway, and at this time, Dong Fangzhuo, the assistant who returned to the room with him, suddenly remembered:

It seems that because the failure was too sudden, Lu Jiadong's proposal was too unacceptable, and he left in too much hurry, it was likely that he was forgotten in the general control hall of the test site, Zhao Rusong didn't think too much when he heard Dong Fangzhuo's words, and directly ordered his young assistant to go to the general control hall to get the briefcase back, but he didn't expect that this Dong Fangzhuo would be like a stone sinking into the sea as soon as he went, and he never came back.

Zhao Rusong looked at the watch in his hand, and saw that Dong Fangzhuo had been gone for almost two hours, and there was no sign of coming back. Zhao Rusong, who was anxious, couldn't help but turn around and walked towards the door hurriedly, but when he just opened the door, he stopped:

"Can I go? How can I go? Do I still have to listen to the cynicism and countless white eyes of others?" Zhao Rusong thought secretly in his heart, and then slowly took back the hand that had been placed on the door lock:

"Can't go, I definitely can't go!"

Zhao Rusong finally made up his mind. Then he turned around and returned to the house, sat down on the chair next to the bed dejectedly, looked at the sunset outside the window, and sighed with resentment:

"None of these young people are down-to-earth!" Such an obvious pun seemed to be talking about his assistant Dong Fangzhuo, but he knew in his heart that this sentence was more directed at the young man in a high position, although that person was a military talent he valued very much. Although in some ways he had to admire the intelligence of that person, although he had a good personal friendship with that person, but no matter what, that person was still an out-and-out young man in his eyes.

Because of this, Zhao Rusong felt very familiar with Lu Jiadong's clear persistence and stubbornness a few hours ago, because when he was young, he didn't care about his persistence and stubbornness in order to think it was right, but Zhao Rusong didn't feel kind about it. On the contrary, it feels very strange, after all, for a scarred loser. Lu Jiadong's proposal was tantamount to sprinkling a handful of white salt on his bloody wound again, which Zhao Rusong couldn't bear no matter what.

"It seems that it's really old, it's useless!" Thinking about it, Zhao Rusong sighed again, and then opened his eyes as if they were squinting into a slit, staring at the slowly sinking sunset outside the window. The sun is weak in winter, and even more so in the sunset, there is no crimson glow, no catchy light, just like the old plates that can be found everywhere in the kitchen. Plain, bleak, just like Zhao Rusong's silent heart now!

To tell the truth, from the bottom of his heart, Zhao Rusong does not want to leave the new tank development team, he has missed ten years, and does not want to miss the rest of the time, thinking about the oath of serving the country when he was young and studying is still in his ears, and the words of talking about the military industrial power with his friend Yang Limin are still fresh in his memory.

The current ammunition research and development of new tanks is something he has dreamed of for many years, as long as there is a glimmer of opportunity, even if there is only a glimmer of opportunity, he will not choose to leave, but at that time, Lu Jiadong did not give him this line of opportunities, which made him helpless and sad to choose the idea of deviating from his heart:

"In this case, we should also think about whether it is time to take a back seat!" As the sunset sank into the mountains, the sky also sank, but Zhao Rusong seemed to have figured out everything, with a trace of indifferent kindness on his face, looking at the night sky outside the window, as if chatting happily with an old friend for many years, he said to himself: "It's too old to be useful, so there is no need to be a teacher anymore, it's better to go home and water the flowers, and accompany the old woman."

"Professor Zhao, who are you going to accompany?" Before Zhao Rusong finished talking to himself, there was a voice behind him that he had been waiting for a long time, if he didn't hear it, it was okay, after listening to it, Zhao Rusong's soothing and kind expression immediately darkened, and then turned his head and said in a deep voice:

"Xiao Dong, why did you take so long to get a bag?

When Zhao Rusong just said the word "run", the word "go" was just halfway said, and the word "nonsense" was still in his throat and did not spit out, and the two people who came in behind Dong Fangzhuo made Zhao Rusong stand up in shock, and then looked at the person in surprise, and then looked at Xiao Dong again, and after a long time he said again:

"Director Qin, Deputy Director Zhu, how are you Xiao Dong, this is"

"Professor Zhao, are we here to compensate you!" Before Zhao Rusong finished speaking, Zhu Haifeng, who was in the lead, stepped forward and said sincerely to Zhao Rusong:

"Lao Qin and I were a little neglectful of you before, and I hope that your boss has a lot, don't take it to heart!"

"You are" Listening to Zhu Haifeng's apology, Zhao Rusong's eyes were a little confused, the two persons in charge of the armor system, who had won the battle between the spear and the shield and were excited, why did they suddenly come to apologize to themselves, whether it was sincere, or hypocritical, or for further humiliation and to see the joke when he left, Zhao Rusong's mind turned for a while, but he couldn't pay sure about it.

Qin Jingbin, who was standing behind Zhu Haifeng, saw Zhao Rusong's appearance, how could he not see through what this old expert was thinking, so he hurriedly stepped forward and explained with a sincere smile:

"Professor Zhao, Lao Zhu and I are indeed sincerely apologizing to you, just now, Chief Master Lu used the new 100mm armor-piercing bullet you advocated to effortlessly penetrate the composite armor developed by me and Lao Zhu at a distance of one thousand meters!"

"Use that 100mm armor-piercing bullet to penetrate your composite armor at a distance of one thousand meters?" As soon as Qin Jingbin's words fell, Zhao Rusong's face was immediately overflowing with shock, but such a shock was more like a drop of water in a deep pool on his slightly dark and dull and serious face, although there was a trace of waves, but it was not obvious.

If it were in normal times, Zhu Haifeng and Qin Jingbin promised to notice, but today they came to apologize sincerely, and secondly, they came to apologize sincerely, and secondly, they did not care about these details for the sake of their own research, so when Zhao Rusong's voice gradually fell, Zhu Haifeng opened his mouth and responded:

"That's true, to be honest, if you don't see it with your own eyes, no one would dare to believe it, but fortunately, Mr. Lu told us the principle later, and then we knew that this new 100mm long-rod shelling tail stabilized armor-piercing bullet is also your old painstaking production!"

"Yes!" As soon as Zhu Haifeng finished speaking, Qin Jingbin picked up the conversation and continued: "The groundbreaking 32mm projectile diameter, the ingenious 12:1 aspect ratio, and the five-piece tail design that reduces drag, maintains stability, and improves kinetic energy efficiency all make us ashamed in front of you!"

"That's not all!" As soon as Qin Jingbin finished speaking, Zhu Haifeng added again: "There is also the pit opening stage, the anti-squeezing and penetrating stage, the filling stage and the final projectile body killing stage, the theoretical nature of these four shell-piercing shells striking armor is also incisive and thought-provoking, especially the pit opening stage and the anti-squeezing and penetrating stage, these two armor-piercing principles are of great help to the development of our composite armor!"

Zhu Haifeng's words made Qin Jingbin, who was on the side, nod his head incessantly: "That's right! When the armor-piercing warhead collides with the armor at high speed, the pressure of the collision is as high as tens of thousands of megapascals, and at this time, neither the warhead nor the armor can withstand such high pressure, but although the warhead with good performance will be shattered, the fragmented projectile metal should fly to the place with little resistance, and take away the fragments of the armor surface while scattering, so that a hole can be opened on the surface of the armor."

If the projectile body has sufficient kinetic energy, under the action of the force and moment of the armor-piercing warhead, the velocity direction of the penetrating surface and the projectile body will gradually turn vertical, and the phenomenon of richeting will not appear, and then the projectile body will penetrate while shattering, and the projectile body fragments will be squeezed around the projectile body to make the perforation expand and the anti-squeeze will appear."

Zhu Haifeng and Qin Jingbin, you are a sentence, I am a sentence, such as a few Jiazhen talking about the theoretical basis of armor-piercing bullets, as well as his reverence and respect for Zhao Rusong, but Zhao Rusong is indeed more and more confused, when did he put forward such a theory (to be continued. )

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(Double commuter pass activity time: 0:00 on December 29, 2015 - 23:59:59 on January 7, 2016)