Popov's idea can be called the prototype of the radio proximity fuze, equipped with this fuse, the shell can emit electromagnetic waves, when there is an object in front of the shell, there will be an echo reflected back, the fuse is equipped with a part that can receive the echo, when the echo is received, the shell will automatically explode.

In Lin Yuan's time, this kind of fuze was widely used in the late stage of World War II, becoming the standard equipment on anti-aircraft shells, in later development, this kind of fuze can also be according to the Doppler effect, that is, the different echo frequencies generated by the different speed of object movement, automatically judge the distance from the target, choose the most suitable distance to detonate.

Although in modern warfare, radio proximity fuzes are easily jammed by the enemy due to the emission and reception of electromagnetic waves, and are gradually replaced by laser proximity fuzes, but in this era when there are no even electron tubes, this concept is still a great invention!

At this time, Oryahar laughed and said, "Radio? Can you fix the current communication equipment first? It's funny to hear that your communication equipment broke down in an instant, but I don't know what the principle is? ”

A voice rang out: "Is it that your radio is also on strike like those workers in the country?" There was another laughter from the communicator, Chen Fei heard the people inside talking and laughing, and was anxious to know what they said, so he asked Lin Yuan: "What are you doing talking and laughing?" ”

Lin Yuan laughed: "They are laughing at the radio inventors. ”

Chen Fei asked puzzledly, "Why are they laughing at him?" ”

Lin Yuan said helplessly: "It's not surprising that new things are always not accepted by people when they appear. ”

When the two of them said this, they suddenly only heard silence in the communicator, Lin Yuan's face changed, and he issued a detonation command in an instant, only to hear a loud "boom" from the communicator, and the explosives of the explosion instantly destroyed the eavesdropper, and there was no sound in the communicator.

Chen Fei knew that Lin Yuan had activated the cannonball, and he asked in surprise, "What are you doing here?" If you don't detonate sooner or later, why should you detonate at this time? ”

Lin Yuan said, "Didn't you hear the silence inside? If I don't detonate the explosives, won't the enemy run away? ”

Chen Fei said helplessly: "Can you stop saying half of it?" Is silence the enemy fleeing? ”

Lin Yuan said: "Everyone was laughing, but suddenly it was quiet, what is the reason, on that occasion, the only person who can calm everyone down is Grogerko, he must be listening to something, so everyone is quiet, what he wants to listen to must be the urgent military situation reported by the guards." ”

"When he heard about it, he was going to be out of the way, so I detonated a shell and killed him instantly."

Chen Fei suddenly realized and said, "So that's the case? Now Grogerko is dead, right? ”

Lin Yuan nodded and said: "It should be dead, I am afraid that the Russians will know the secret of the Black Sokin, so I did not load it in the shell, but used picric acid, the explosive power of picric acid is stronger than TNT, and the power is enough for the ** people." ”

Chen Fei said: "This can cause a lot of damage to the **, let's take the opportunity to attack quickly." ”

Lin Yuan shook his head lightly and said, "You can't attack yet." ”

Chen Fei asked in surprise, "Why can't you attack?" ”

Lin Yuan said: "In the past few days, the temperature here during the day has been around minus 10 degrees, basically not more than minus 20 degrees, and according to the intelligence of our meteorological team members, there will be a big drop in temperature here in recent days, and the maximum temperature during the day is only about minus 256 degrees." ”

Lin Yuan said helplessly: "The place where the Russian army is located is high, fighting in this kind of alpine area, our guns can't do it!" ”

Chen Fei said: "I understand what you mean, our bolt is indeed a little more complicated than the bolt of the first son, plus our bolt is simple in structure and relatively small in mass, so the water vapor between the bolt and the gun body is very likely to freeze the bolt, and our gun is in danger of not being able to open, and the gun of the first son is not easy to be frozen due to the bulky bolt. ”

Lin Yuan said: "That's right, it's not just our guns, I asked He Lizhi, our troops are not specifically trained for fighting in the alpine region, so they lack relevant experience, and the place where the Russian army is located is much colder than ours, so their experience is better than ours." ”

Chen Fei said: "Then I will go and gather the officers above the battalion level and teach them some combat experience in the alpine region, we have conducted training in the alpine region on the Qinghai-Tibet Plateau, you can rest assured." ”

That night, the Beijing ship sent a message to Lin Yuan: the Siberian cold snap had reached Qiqihar, Lin Yuan walked out of the door, only to feel the bitter cold, and quickly closed the door and hid in the house.

Lin Yuan looked at the snow and thought: "It's cold before the frost, it's cold after the snow, tomorrow's weather, I don't know what the road will be cold?" ”

As soon as the sky was bright, He Lizhi was knocking on the door in a hurry outside, Lin Yuan was awakened by the knocking sound, opened the door, He Lizhi ran in and said: "There is a battalion commander, with a battalion of troops, went up the mountain. ”

When Lin Yuan heard this, he was taken aback and asked, "What?" What did they do up the mountain? ”

He Lizhi said: "They left me the news that the commander of the Russian army was killed, and now is a good opportunity to attack the Russian army!" So he led the troops in. ”

Lin Yuan roared angrily: "Isn't this nonsense! Who gave him the order! ”

He Lizhi said: "No one gave him an order, it was the information he got himself, and then he was worried that the fighter plane would be fleeting, so he acted without permission." ”

Lin Yuan's face turned blue with anger, and he thought to himself: "He doesn't know anything about the situation in the mountains, and he goes in with a battalion of several hundred people, isn't this sending him to death!" When this battalion commander comes back, I'll have to shoot him a hundred times! Lin Yuan suppressed his anger and asked, "What is the name of this battalion commander?" How can such a person become a battalion commander? ”

He Lizhi said: "It's all my fault, this battalion commander is named Zuo Weimin, his ability is very strong, he just likes to show himself, I didn't think much about it, so I made him the battalion commander." ”

Lin Yuan shook his head and said, "I don't blame you for this matter, let's think of a remedy." However, Lin Yuan's mind changed for a moment, and he asked He Lizhi and said, "How did this Zuo Weimin know the news of Rogerko's death?" ”

He Lizhi said: "In the early hours of this morning, an officer came to surrender, and it was the news of Grogerko's death that he brought. ”

Lin Yuan hurriedly said, "Hurry up and take me to see that officer." ”

Lin Yuan came to the barracks where the officer was held, and was stunned when he saw the officer, what he didn't expect was that the officer was also stunned when he saw him, Lin Yuan said, "Why are you?" ”

It turned out that this officer was the Luzhkov who was spotted by Lin Yuan in the Battle of Tiger Mountain and fell for Lin Yuan's counter-plot!

Seeing that Lin Yuan was a little nervous, Luzhkov said: "I'm here to surrender, Grodeko is dead, I don't want to stay there any longer." ”