Brigade Commander Chen went to discuss with their headquarters, and Han Shuang waited here, because such telegrams were still difficult to transmit messages between each other, and they were not safe, and there was a great possibility of being cracked.

The underground war between us and the enemy has never stopped, and if this decipherment is completely cracked, the result will be very miserable, at least on the battlefield in Europe, Germany has been played by the British in this way, otherwise, it is estimated that Britain will be even more miserable.

Fortunately, it is good that their radio stations should be kept secret, and there is no danger of leaking secrets for the time being, in fact, one of the main reasons why Han Shuang proposed this communication cluster is also this, that is, to avoid being eavesdropped by the enemy.

Because their communication with each other will definitely involve some news, these news Han Shuang is willing to tell the Eighth Route Army, but whether it is the central government or the little devil, she doesn't want them to know.

It took about an hour for Brigade Commander Chen to return here, and after he came in, he said in a serious tone: "Comrade Han Shuang, if you are willing to help us with this, we will definitely be able to defend it, even if we can't hold it, we will definitely not let it fall into the hands of the little devil." ”

"Hmm." Han Shuang nodded, pondered for a moment and said, "Yes, if that's the case, then we can help you build it immediately." Han Shuang said very dryly.

"Well, Comrade Han Shuang, you know where we are now, and we want to know, if possible, can you build this thing near the center of the border area, and if you really can't get through, you can also do it on the edge of the Yellow River." Brigade Commander Chen looked at Han Shuang and asked.

Han Shuang pondered for a moment, "Is it safe to go over there?" ”

"Safety, the devils said before that they surrounded us, but in fact their encirclement is not complete, on our west side their encirclement is very weak, not to mention, and there are several small roads that they have not found, but these small roads are not suitable for large troops to transfer, once discovered by the devils, we may fall into the encirclement. So we chose a more secretive route for our retreat. ”

"But now that I've communicated with the headquarters, if we stick here, then we can counterattack at any time on our western side, and we will first concentrate superior forces to wipe out all the devils on our western side!"

"In this way, there will be no barriers between us and the border area, and we can guarantee absolute security here." Brigade Commander Chen was categorical when he said this, and it was obvious that the headquarters had also given him sufficient authority.

"Good! Since Brigade Commander Chen said so, we can send this thing across the Yellow River. Han Shuang thought about it and decisively agreed.

From here, it is only 300 kilometers away from the Yellow River on the west side, in fact, as long as you cross the Yellow River, you can choose a mountain peak with high enough terrain to build these communication clusters.

Hearing that Han Shuang agreed, Brigade Commander Chen was immediately overjoyed, "Comrade Han Shuang, thank you so much!" On behalf of the government of the border region and all the Eighth Route Army, I would like to express my gratitude to you. Brigade Commander Chen directly gave Han Shuang a military salute.

"Brigade Commander Chen is polite when he says this......" Han Shuang replied with a smile, and just wanted to say something, Han Shuang's headset suddenly sounded the voice of a signal soldier: "Report!" Chief, our radar has detected an unknown aircraft coming in our direction, flying at a speed of about 400 kilometers per hour. ”

"I'll come over at once." Han Shuang pressed the headphones on his ears and responded.

"What's wrong? Did something happen? When Brigade Commander Chen heard Han Shuang's words, he immediately asked.

"A plane with a devil is flying towards us." Han Shuang responded, then thought for a while and said, "In this way, the two of you can come with me, and we will go to another place." ”

After speaking, Han Shuang walked directly outside, while Brigade Commander Chen and Li Yunlong glanced at each other, and naturally followed directly.

Han Shuang took them directly to another tent, and when they entered this tent, Brigade Commander Chen and Li Yunlong were stunned for a moment, because there were many things in it...... They didn't know each other, especially the strange glass, which was still shining, and they didn't know what it was for, but there was a pointer on the top of the screen that kept spinning.

"How many enemy planes were spotted?" Han Shuang immediately asked.

"At present, it has been discovered that an enemy plane, flying at an altitude of 2,850 meters and a speed of 400, is flying towards our area. At present, it is 300 kilometers away from us, and according to their route calculation, it should fly directly from the airport on the side of North China Airport. The soldier replied immediately.

Han Shuang nodded, "It seems that the devil is not very willing, and wants to know what the specific situation is for us, so he sent an aircraft to reconnoitre." ”

"This ...... How did you spot enemy planes? And it's 300 kilometers away...... "Brigade Commander Chen and Li Yunlong are stupid, they usually fly overhead by devils' planes, and they only know when they hear the sound."

But now, Han Shuang and they can not only know the enemy's flight altitude and speed in advance, but even know the enemy's aircraft from a distance of more than 300 kilometers. 300 kilometers, that devil's plane will fly for nearly an hour!

This...... They couldn't imagine how the hell this was discovered? Could it be that they put intelligence officers in that direction? However, it is impossible to arrange intelligence personnel to know the enemy's speed and flight altitude.

"This is a radar, which is specially designed to use electromagnetic waves to detect the enemy in the air, and can give early warning to distinguish the flight speed, direction, altitude and so on of the enemy's aircraft." Han Shuang explained with a smile.

Brigade Commander Chen and Li Yunlong didn't know what to say, because they didn't know why, before they came here, both Brigade Commander Chen and Li Yunlong felt that they belonged to the kind of people who were better at fighting, but they didn't know why, after coming here, they suddenly felt it.

Why is the war different from what they imagined? Can even planes be spotted in advance?

"Order, all men go into camouflage, cover our artillery positions." Han Shuang said decisively.

"Yes!"

After giving the order, Han Shuangcai turned his head to Li Yunlong and Brigade Commander Chen and said, "Brigade Commander Chen, it looks like we are going to put on a good show for the enemy, but we need your help." ”

"How?" Brigade Commander Chen hurriedly asked, "If there is anything we can help with, just say." ”

"Yes, Comrade Han Shuang, if there is anything we need to do, just say it." Li Yunlong next to him also hurriedly spoke, "My old Li went up the knife mountain and went down to the sea of fire, and I didn't give up." ”