Come to the telecommunications department.

We are old acquaintances. You don’t even need to say hello when you come in.

I accidentally discovered that the surveillance map showed a faint yellow spot inside.

It's not a pure yellow spot. It's yellowish.

What's the meaning?

Who is he?

"Your Majesty Commissioner."

Ling Yan came out and said hello with a smile.

Zhang Yong nodded and poked his head inside. He discovered something very unexpected.

The yellowed dot on the map turned out to be Li Jingzhi. Because it turned yellow, the label was gone. He thought Li Jingzhi was not there just now.

eccentric……

What does yellowing mean?

Are you a probationary party member? Or have you already joined the party ideologically?

If it is a purely organizational relationship, the traitor last time cannot be explained. The system may be differentiated based on beliefs.

If you have progressive ideas and meet the requirements of the party organization, the system may default to you as a red party even if you have not joined.

On the other hand, even if you are a member of the Red Party, if you rebel and your thoughts regress, you will not be prompted as a yellow dot.

is that so?

Zhang Yong thinks this is the case, but there is no evidence.

He quickly calmed down. Li Jingzhi yearned for the bright side and had already joined the party mentally, showing that there was no problem with the yellow dot.

Keep calm.

Li Jingzhi was found asleep.

Lying on the table, head tilted, sleeping soundly.

Confused. Looked at Ling Yan.

"She didn't want to go back." Ling Yan whispered, "She tracked a mysterious radio signal and has been restless for the past few days for fear of missing it."

"What radio signal?" Zhang Yong was curious, "is it worthy of such attention?"

"It's a very strange radio signal." Ling Yan's face became serious, "It should be a radio model that I have never seen before."

"Japanese?"

"unconfirmed."

"Is it a model that your telecommunications department has not registered?"

"Yes. It's not any model we are familiar with. It should be newly developed or brought back from Europe and the United States."

"German's?"

"unconfirmed."

"oh……"

Zhang Yong did not continue to ask.

This is a very professional question. He doesn't understand it at all.

But I immediately thought of Natasha. This hairy beauty is the real telecommunications genius.

Well, calling her a genius might be a bit exaggerated. However, it can be said without any secret that Natasha's telecommunications skills are far superior to Ling Yan's.

The government's telegraph communication has always been a weak point. The chance of being cracked by the enemy is as high as 80%.

Few people valued the confidentiality of telegrams.

Even if it is kept secret by the superiors, it will turn into a pile of shit when you get down below.

Now it is frequently decrypted by the Red Party. In the future, it will be frequently decrypted by the Japanese invaders. There are almost no secrets at all.

Whether it was the Battle of Songhu or the Battle of Jinling, telegrams were often leaked. Later on, there was no progress in the battles at Changsha, Changde, and Hengyang.

Later, Liao Yaoxiang became anxious and even used a clear code to call. It was simply a life-threatening situation.

Although the situation is said to be urgent, it also shows that Liao Yaoxiang doesn't care about keeping secrets. If the situation is urgent, he will act recklessly. It seems that there is more than one like him.

Fortunately, Liao Yaoxiang had a professional background and had participated in the expeditionary force. He was considered the most orthodox military general. His confidentiality was so unbearable, let alone others.

so……

Zhang Yong immediately thought of a very important question.

Just have your own password.

If he carries his own radio, he must design his own password.

Never use government codes.

Otherwise, it means that the door is always open and the Japanese invaders break in.

If you want to design a new password, you must find Natasha. Only she can do this job.

Suddenly, Li Jingzhi yawned and then woke up in a daze.

Seeing Zhang Yong in a trance, she suddenly woke up and stood up hurriedly. Her eyes were still red and covered with bloodshot eyes.

Monitoring radio stations and deciphering codes are inherently boring tasks.

The pain is no less than that of the later generations, which makes you watch 3,000 episodes of "Foreign Wife-in-law, Local Man" without sleep...

"Go and wash your face." Zhang Yong waved his hand.

"Yes." Li Jingzhi hurriedly went.

Zhang Yong came to the table where Li Jingzhi was lying just now and picked up the draft paper in front of her.

A large number of codes are densely recorded on it. They should be from the mysterious radio station. However, since there is no password, all the codes are from heaven.

"This encoding is very flexible." Ling Yan explained beside her, "It changes almost every day."

"I met a master." Zhang Yong nodded.

"But, every morning, there is a fixed message. There is not much change."

"What's the meaning?"

"I suspect that this is the secret key. It is the first telegram every morning, which is responsible for reminding everyone which set of secret keys should be used. Then the following telegrams are sent using this set of secret keys. The recipient must

Use the same secret key to decrypt."

"What's the secret key? A book? A dictionary?"

"No. Very complicated. There are more than twenty codes. Inferring at least six changes in the middle."

"Six?"

"It's not a book. It's not a dictionary. It can't even be a self-created word list."

"Yeah?"

"In fact, even if we decipher the first telegram, it will be useless because we don't have the secret key."

"oh……"

Zhang Yong frowned.

He suddenly had a bold idea.

He thought of some very terrible encryption device. The Germans' secret weapon.

Enigma machine!

An existence that cannot be deciphered at all.

Unless Turing shows up in advance.

but……

This is the Far East!

How could the Germans bring the Enigma machine to the Far East?

Shaking his head...

Thinking too much.

It is impossible for the Germans to bring such a secret weapon to the Far East. Unless...

submarine?

Are there any German submarines in the nearby waters?

It seems that there are Enigma aircraft on German submarines. If there are really German submarines near Shanghai...
To be continued...