"You speak well to Lao Tzu." Li Shimin knocked on the table and glared at him and said, he didn't believe it anyway.

"Dad, what I said is true, didn't you educate me before, now that the territory of Datang is so big, if someone spreads rumors to me in the remote areas of Datang, then it is very likely that someone will use my name to rebel, spread rumors, and distort my meaning to achieve their goals?"

"In order to solve this problem, or to prevent this situation from further escalating, I pondered for a few days to invent this thing." Li Ke said unashamedly.

You listen, you listen to what you're talking about? Do you think your father and I are a fool, and you think I believe these words?

The problem is that you are too outrageous, although I deliberately said this to dig a hole for you before, but because of this incident, you developed such a mythical thing, is this even more outrageous?

Li Shimin didn't know what emotions he should use to face Li Ke's this.

"Are you sure you don't have a fever?" Li Shimin looked at Li Ke and asked in disbelief, he was a little difficult to collapse, because this thing ...... It was completely different from what he expected.

"Of course, this is easy to test, and I have the actual product ready to test it at any time." Li Ke said very simply.

Li Shimin was stunned, can he test at any time? Doesn't that mean it's true?

"Are you sure?" Li Shimin's eyes widened like copper bells.

"Come in." Li Ke didn't bother to continue talking nonsense, but directly greeted him, and asked the people waiting outside the hall to quickly bring in a small radio station directly.

This small radio station has an approximate range of 10 to 100 kilometers or so according to the instructions without any problems.

"Chang Nei, please ask someone to prepare a large table and place it in that position." Li Ke found a corner in the Liangyi Hall and said quickly.

Chang Lin glanced at Li Shimin, Li Shimin naturally waved his hand directly, and Chang Lin immediately went to prepare.

Soon a large table was moved in.

"Go, tell the guards outside the door, everyone outside the hall retreats twenty meters, and no one is allowed to approach, and the violators will be executed." Li Shimin waited for the table to move in and watched Li Ke's people install it there, and he directly gave the latest order.

Chang Lin immediately went to deliver the order.

After getting ready outside the hall, Li Ke's two operators here have also assembled the entire radio station, speaking of which, there are also many people in Datang who have learned electromagnetism and Morse code, and these people have also been trained before.

However, they are all trained by the firm and used to deliver messages.

Electromagnetism was added by them later, and after this radio station was taken out, they quickly learned how to operate it, and the next thing was nothing more than the problem of unfamiliar operation.

There is no problem with translation, and the code they use is also based on Morse code combined with Chinese four-corner numbers and then improved numeric code.

The codebook can be used directly after the agreed signal, so that even if someone intercepts it, it is impossible to know the contents without the codebook.

Of course, for the time being, this encryption method is not to prevent others from intercepting the telegram, but to keep it secret.

For example, after getting the information, the person in charge directly translates the information into numbers according to the codebook and then gives it to the telegraph operator.

The telegraph operator simply sent it, and in the process, the telegraph operator did not know what the contents of the telegram were, he only knew a series of numbers.

The whole principle is not difficult, anyway, now pinyin has long been invented by Li Ke, directly using Morse code to transmit the digital past, and the number is directly corresponding to the code book, just translate it according to the code book.

This is the simplest and most primitive way to encrypt, and it is almost impossible to crack without a codebook.

"How to test?" Li Shimin took a deep breath, he didn't believe it at first, but now looking at this obviously delicate machine, he was somewhat convinced.

If this thing is true...... Li Shimin didn't know how to evaluate this matter for a while.

"Hehe, father, you can write a note casually now, and then hand it over to the Imperial Forest Army outside by Chang Nei, and then send it to the post station near the Datang National Martyrs Cemetery, which is about twenty kilometers away, at an expedited speed of eight hundred miles."

"The minister has already sent another machine there, and according to the speed of the horses, it averages about 60 kilometers per hour, and 20 kilometers is 20 minutes."

"In 20 minutes, the news will probably be sent back there, and when the time comes, the people here will translate it directly, can't it be compared?" Li Ke said with a smile.

Li Shimin took a deep breath: "Okay, just do it, if you're ready, I'll start." Chang Lin went to let the Imperial Forest outside prepare the horses and prepare. ”

"Yes!" Chang Lin immediately agreed.

After Li Ke's people debugged, it didn't take long for the machine to make a "tick-tock" sound, to be honest, when he heard this voice, Li Ke was somewhat emotional, thinking about it, he heard this voice in his last life was basically in various film and television dramas.

I haven't heard it in reality at all, and the radio stations in reality are basically already direct conversations, and this ancient way of telegraphing has long been obsolete.

Now here in Datang, he has seen and heard it again.

Soon, one of the two people in charge of operating the radio transmitter stood up directly: "Your Majesty, Your Highness Qiqi, has contacted the test radio, and the test can start at any time." ”

"Father, you can give the order directly." Li Ke looked at Li Shimin.

Li Shimin walked directly to his desk without saying a word, picked up a pen and wrote a note, and then deducted a seal on it, and then Chang Lin next to him prepared the fire paint for sealing and sealed this thing directly.

"Prepare for the clock." Li Shimin raised his head and looked at the pendulum clock placed next to him, while Chang Lin walked quickly to the door.

When the shout of "eight hundred miles urgent" sounded outside the door, Li Shimin wrote down the time, and then waited.

When almost twenty minutes later, Li Shimin's eyes were on this side, Li Ke shrugged his shoulders and waited quietly, suddenly, the machine on their side made a sound again, and the personnel on their side quickly began to receive information.

When they accepted the information and began to translate quickly, when the translation was completed, the officer was stunned for a moment, but after being stunned, he still handed the note to Li Ke as soon as possible.

Li Ke stretched out his hand to take the note, and when he saw the contents on it clearly, his whole face instantly turned black.

It reads: His Royal Highness King Qin Li Ke of the Tang Dynasty wetted the bed for the last time when he was five years old.