Li Xin said to Li Shui: "Brother Huai, do you have any plans regarding the whereabouts of the traitor?"

Li Shui said: "It's actually very simple. There are not many people who have access to the core secrets of Shangjun Courtyard."

"This person knows about the phone call and seems to be a scientific researcher."

"In Shangjun Villa, there is no need to check the early craftsmen. They have always followed me and are loyal. I am very confident about them."

Li Xin reminded Li Shui: "Brother Huai, don't take it lightly. Those craftsmen are likely to be bribed. I think it's better to investigate them all."

Li Shui coughed dryly and said: "Brother Li, you don't understand what I mean. What I mean is...the early craftsmen were all poor people. They had no culture."

"They want to get involved in scientific research, but they don't understand. Even if they want to betray me, they can't."

Li Xin: "...I see, okay. Maybe this is the legendary Yu Zhong. Foolish and loyal at the same time."

Li Xin said to Li Shui: "Then how do you plan to investigate those scientific researchers?"

Li Shui said: "I will reveal some false news to them in batches, and then gradually narrow the scope. After doing this a few times, you will naturally know."

Li Xin gave a thumbs up: "How brilliant."

Li Shui smiled slightly: "Brother Li, thank you very much."

…………

The next day, there was a sea of ​​people in front of the Banished Immortal Tower.

Because Shangjun Courtyard is selling books, the title is very simple, called Code Book.

The contents of this codebook are also very simple, just some numbers and irrelevant text.

A number corresponds to a text, which is very simple to say simple and very complicated to say complex.

When I first saw these books, no one knew what they meant, but after buying the books, I followed the instructions above and studied them, and I quickly mastered them.

The most ingenious thing is that these books are different from each other. After buying them home, you no longer have to worry about your password being known.

Therefore, not only courtiers with telephones like to buy this kind of book, but also ordinary people like to buy it.

Imagine you are a businessman and you write a letter to your clerk to guide him on his next plan.

What if this letter is seen by your opponent? Wouldn’t the opponent be able to analyze your movements and attack you calmly?

Well now, with the password, everything is no longer transparent.

Ever since, there has been a rush to buy this book.

In this rush to buy, a group of charlatans stand out.

The craftsman responsible for selling books was puzzled and asked a lot: "Guys, are you charlatans? I'm curious, why do you want to buy books?"

These people replied with a smile: "The banished immortal knows astronomy from the top and geography from the bottom. We all admire the banished immortal. We believe that all the books published by the banished immortal contain the secret of becoming an immortal."

"We have bought many books about banishing immortals, but we have not seen the reason. Now this code book? We suspect that the key to unlocking the mystery is hidden in it."

"Perhaps after we buy it back and memorize it thoroughly, we can unlock the secret code of banishing the immortals, and then go to the fairy world."

Craftsman: "..."

Daqin has too many people, so the probability of weird things happening is relatively high.

I spent the whole morning buying books.

After everyone bought the book, they were still not satisfied and asked the craftsman: "Is there anything new that can be sold?"

The craftsman smiled slightly and said, "Of course there is."

Then? He took out some lamps.

One of the lamps is an ordinary lamp? The other two lamps, one is painted red? The other is painted yellow.

The craftsman said to everyone: "These three lamps are devices to prevent eavesdropping."

After hearing this, the courtiers burst into tears with excitement.

"Prevent eavesdropping? Great, if it can really prevent eavesdropping? Wouldn't it mean that you can say whatever you want?"

So these people eagerly asked the craftsman: "Excuse me, these three lamps? How should they be used specifically?"

The craftsman smiled and said: "It's actually very simple? After you buy the phone, there is already a socket reserved on it. Just check this thing into the socket."

"Normally? These three lights are on, which can help you save electricity. When you are making calls, the white lights are on."

"During the day, the white light that lights up will remind you that you are on the phone, lest you forget to answer the call in the middle of the call, hold the phone without speaking, and waste the phone bill."

Everyone: "..."

Who could be such an idiot?

Maybe Daqin really has such idiots, but can such idiots afford a phone?

The craftsman added: "At night, the effect of this lamp is even greater. This lamp can provide illumination, so that you will not be too lonely when you are talking on the phone, and you will not be afraid of the dark."

courtier:"……"

The craftsman continued: "As for the yellow light, the yellow light means that the current line is somewhat unsafe and there is a possibility of being eavesdropped. When the yellow light comes on, please put down the phone. This will be safe."

The courtiers all nodded.

At this time, someone asked again: "As for that red light, what does it do?"

The craftsman said: "If you don't notice it after the yellow light turns on, you are still on the phone. After calling for more than a quarter of an hour, the red light will turn on."

"My lords, when you see the red light turn on, you will know that you must have been bugged, and have been bugged for a long time."

"At this time, you adults need to hang up the phone and recall what you just said. If there is no treacherous content, everyone can be happy and continue to live their lives."

"If you accidentally say something treacherous, then...hehe, prepare the coffin."

The courtiers all yelled.

They imagined the scene in which they saw the red light: they were talking on the phone happily, and suddenly they saw the red light turn on. They suddenly couldn't make a sound, their faces were pale, they were sweating like rain, their bodies were weak, and they collapsed on the ground...

...How miserable is it?

From now on, I may be afraid of red things.

At this time, Zhou Qingchen suddenly said with emotion: "Ban Xian is so considerate. I didn't expect that Ban Xian would be so considerate for us despite his busy schedule."

"Think about it, everyone can go buy a coffin after seeing the red light. This is better than sending people from the court to arrest people and buying coffins in a hurry, right?"

courtier:"……"

This guy is really a genius. He can actually use this kind of angle to praise.

Among the crowd, all the courtiers were filled with emotion.

Only one courtier named Gan Gao looked confused.

He looked at the three lights on the table and wondered: "Red light? Yellow light? Are there any? All I see are gray."

Later, Gan Gao comforted himself and thought: "Maybe they will change color when they light up."

So Gan Gao followed the crowd and bought three lamps and went back.

…………

Li Si returned to his home with the light bulb, and then personally received the phone call.

He picked up the phone and tried to call an old friend.

The call was quickly connected.

Li Si smiled and said, "Brother Ma, you are fine."

The people over there said in panic: "Oh, Prime Minister, please don't call me Brother Ma. How can I bear it?"

Li Si said: "I have nothing to do today, so I just chatted with Brother Ma about family matters. There is no need to mention the title of Prime Minister or not. At this time, there is no need to mention it."

"Privately, we treat each other as brothers."

The other side agreed obediently and said solemnly: "Yes, everything will be according to the Prime Minister's command."

Li Si talked to the man absentmindedly.

In fact, he didn't want to talk to this person on the phone.

Today's phone call actually has two purposes.

The first purpose is to see if the three newly purchased lamps work.

The second purpose is that it is now the end of the month and Li Si’s call time has not been used up yet.

He didn't want to take advantage of Li Shui, so he planned to waste it.

In the past, when Li Si made phone calls, he would always sit in a chair, relaxed and carefree.

But this time, Li Si was very nervous. He kept staring at the three lamps on the table.

While the two people were talking, suddenly, the yellow light came on.

Li Si exclaimed in his heart: "Sure enough, someone is eavesdropping."

Then, he put the phone down hard and hung up.
To be continued...