At noon, Feng Chen and Yang Xunzhen ordered two dishes, one meat and one vegetarian at Jinjiang Chuanwei Restaurant, and after a brief meal, Feng Chen took Yang Xunzhen to the telecommunications room in the basement and let Yang Xunzhen rest there first. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

"Comrade Xunzhen, you take a rest here first, and I'll go to the Du Mansion on Hua Gezhen Road to find Wan Molin to listen to the news and see how Xiang Manli is injured."

"Okay, then you go get busy first." Yang Xunzhen nodded.

After Feng Chen left, Yang Xunzhen didn't rest, she looked at this basement carefully, the space was quite spacious, but the equipment inside was really simple.

There was only a radio, a marching bed for a rest on duty, a table and two stools.

Relying on this, it is completely impossible to listen to the enemy's radio station.

It seems that Feng Chen's intelligence group communicates with the Military Command Headquarters in Chongqing on a joint time system.

The so-called joint time system means that the sending and receiving parties agree to contact each other on the machine at a fixed time, generally two to four times a day, and the two sides will go online at the same time at the agreed time to exchange information.

For example, if the headquarters wants to issue instructions to the underground radio station, it will repeatedly send the same telegram blindly at the agreed time, and the underground radio station only receives telegrams and does not communicate with the main station, so as to conceal the identity and place as much as possible.

Or the same is true for underground radio stations to send information to the headquarters, repeatedly sending the same telegram blindly at the agreed time, or after the telegram is sent, the other party reports back in time, which is safer.

It is only used for normal communication, and a normal radio station is required, and the joint time system is agreed.

However, in order to decipher the code, it is necessary to implement a standing waiting system, in which the operator waits 24 hours a day, ready to listen to and capture the wireless telegraph signal at any time, and then analyzes the received signal, explores and analyzes the secrets of the station's nature, level, and affiliation, and then deciphers the secret telegram in a nutshell.

For a highly trained codebreaker like Yang Xunzhen, when she turns on the receiver and hears a suspicious signal, she will first move her hand and gently adjust the antenna orientation of the receiver to roughly determine the direction and position of the radio station.

Next, she will analyze the signal quality and signal strength of the suspicious radio station, and judge the communication equipment used by the other party, the power of the radio station, the distance of communication and other factors, which are the key factors for the next step of analysis and judgment.

Finally, by listening to the type of secret message, we can roughly determine the encryption method and system of the other party, and sometimes basically determine the nationality of the other party, or even a certain organization in the country to which it belongs.

Because any country and organization has its own habits that cannot be shaken off in the use and compilation of passwords.

It's easy to say, but it's actually a very complicated thing.

Yang Xunzhen found a pen and paper, sat down at the table, and made a list, preparing to ask Feng Chen to buy her equipment as soon as possible, and she wanted to devote herself to the battle as soon as possible.

……

Feng Chen arranged Yang Xunzhen, drove the car, and came to the Du Mansion on Hua Gezhen Road, the Du Mansion was like a great enemy today, and the atmosphere was even more tense than when the meeting was held yesterday.

Feng Chen came to the living room and saw Wan Molin sitting there with a serious expression, Chen Mo standing beside Wan Molin without saying a word with a bandage on his left arm.

"Mr. Feng, how did you come back from the small east gate of the sixteenth shop? The Japanese military police headquarters had a large number of plainclothes guards and forcibly stopped and inspected them along the road, and Chen Mo was slightly injured on the way back, and also lost two brothers. ”

Seeing that Feng Chen was intact, Wan Molin felt very strange.

"When I came back, Taro Matsuo from the Japanese consulate was there, and they didn't embarrass me at all." Feng Chen has always told the truth in front of Wan Molin.

"You know what? Cryptography expert Yang Xunzhen, who was shot in the chest near his right shoulder, is still unconscious, and is trying his best to rescue Yang Xunzhen in the emergency room of Renai Hospital. ”

From Wan Molin's words, Feng Chen heard it, Wan Molin still doesn't know that the person who was shot was actually Yang Xunzhen's stand-in Xiang Manli, it seems that Fang Xiaoman, who was holding Yang Xunzhen for the first time, did not say whether Yang Xun, who was shot, was true or false.

"Mr. Wan, Yang Xunzhen, who was shot, is a stand-in, her name is Xiang Manli, an agent of Zhongtong, the real Yang Xunzhen, has arrived safely with me at the Jinjiang Chuanwei Restaurant, where she is resting."

Feng Chen glanced at Chen Mo who was standing on the side, and then looked at Wan Molin and said his true feelings.

"Really! That's great! ”

Wan Molin was so excited that he patted the Eight Immortals table and stood up.

"Chen Mo, you personally took your loyal and reliable brothers and scattered them on Aidoya Road, focusing on the vicinity of Jinjiang Sichuan Restaurant, you must protect Yang Xunzhen's safety, and you can't make any mistakes." Wan Molin gave Chen Mo an order.

"Slow, Mr. Wan, I don't think it's necessary to mobilize the people for the time being, this will arouse the suspicion of others, I think about it, let's send a large number of personnel to the Renai Hospital first to strengthen vigilance." Feng Chen suggested.

"Well, but here at the Geumjiang River-style restaurant, you can't take it lightly!" Wan Molin understood what Feng Chen meant, looked at Feng Chen and nodded.

"I'm wondering, should we discuss with Dong Lanjun, the owner of Jinjiang Sichuan Restaurant, and let her open another branch in another location and place the service staff in the existing store, and now the staff in this store will all be replaced by our people."

Feng Chen actually had such an idea for a long time, and Yang Xunzhen's arrival strengthened his idea that he must clean up the idle people in the Jinjiang Sichuan Restaurant as soon as possible.

"I agree very much, let me personally go to Donglanjun and say, I will lend her the façade on Laffield Road for free to open a branch." Wan Molin said very approvingly.

"Mr. Wan, there is another thing to trouble you, can you secretly get a few radio stations, we will convert them into receivers to listen to enemy stations, Yang Xunzhen asked to put into work as soon as possible."

"What? Don't escort Yang Xunzhen to Chongqing? ”

"According to the current situation, it is very difficult for Yang Xunzhen to go to Chongqing, and it is not safe on the road, so I sent a telegram to Chief Dai of the headquarters at night, requesting that Yang Xunzhen stay."

Feng Chen wanted to keep Yang Xunzhen in Shanghai, and he was considering it in many ways.

First of all, there is the issue of security, although the forces of all parties in Shanghai are complicated, but within the concession, as long as vigilance is strengthened, it is relatively safe.

Secondly, it is easier for Yang Xunzhen to decipher the code in Shanghai, listen to the enemy radio station, and Feng Chen's intelligence team can also give her great assistance in requesting the newspaper.

There is another important reason why Feng Chen can't say it to the outside world, that is, he plans to report to his superiors and restore Yang Xunzhen's party organization relationship as soon as possible.

"Mr. Feng, since you want to keep Yang Xunzhen in Shanghai, let's take this matter seriously, sum it up, sing a double reed play, and make a fake and real." Wan Molin frowned, as if he had an idea.

"Singing a double reed?" Feng Chen asked.

"That's right! Let's sing a double reed to the Japanese. Wan Molin nodded and said.

"How do you sing this double reed?" Feng Chen didn't understand what Wan Molin meant.

"On the surface, let's protect Xiang Manli in the hospital as the real Yang Xunzhen, secretly, we have to protect the real Yang Xunzhen, and after Xiang Manli's injury is healed, we will send someone to escort her to Chongqing, and declare to the outside world that we are escorting Yang Xunzhen to Chongqing, so that Yang Xunzhen can lurk in Shanghai safely."

Wan Molin said what he thought.

"But Mr. Wan, you don't know the inside story, Li Shiqun and Tang Huimin, who have now fallen into the water and joined the Japanese, both know Yang Xunzhen, and Ding Mocun, who has an unknown attitude, also knows them, and several of them have worked with Yang Xunzhen."

Feng Chen felt that Wan Molin's method was good, but if he wanted to hide from the world, Ding Mocun, Li Shiqun, and Tang Huimin couldn't get around, and it would be very difficult to deceive them with Xiang Manli.

"Mr. Feng, do you think Ding Mo Estate has really been implemented?" Wan Molin asked.

"Today at the Sixteen Pu Wharf, Wu Sibao and people also appeared there, I persuaded him to retire, I analyzed, Wu Sibao may have known Yang Xunzhen's whereabouts from Ding Mo Village." Feng Chen replied.

"In that case, let's kill these people first!" Wan Molin said with murderous aura in his eyes.