That's right!

After the hot air balloon lifts off, the minimum attack altitude is also above 100 meters and below 150 meters.

At this height, there is no way to communicate directly through voice.

Previously, their communication was through carrier pigeons.

Although carrier pigeons are also very fast, they still take some time.

Furthermore, carrier pigeons are sometimes not safe to transmit information.

Because in the process of passing, there is a high probability that the carrier pigeon will be shot down.

But now with walkie-talkies, it's completely different!

Through the intercom, you can have a direct real-time conversation.

Lu Sheng couldn't help but say to Lu Bu excitedly: "Father, let's see if this walkie-talkie is good or not!" ”

Lu Bu nodded, and then Lu Sheng went out with the walkie-talkie in a hurry.

Lu Sheng walked far, about more than 200 meters away, then turned on the walkie-talkie, pressed the speech button, and said in an ordinary voice: "Father, Emperor, I am Sheng'er, can you hear me?" ”

Soon, Lu Bu's voice came out of the walkie-talkie: "Sheng'er, Sheng'er, my father heard it, and his voice was very clear!" ”

Lu Sheng continued to experiment, and finally found that the current effective distance of the walkie-talkie is 300 meters, and beyond 300 meters, the sound begins to be confused.

Above 350 meters, there is no signal directly.

However, the distance of 300 meters is barely enough at present.

Of course, there must be continuous improvement.

After all, on the battlefield, a distance of 300 meters is too short.

The commander must run under the hot air balloon......

Next, there is the experimental call.

There is no limit to the distance of the telephone, but it must be done through a dedicated telephone line.

The quality of the phone, Lu Bu is also very satisfied.

After having a telephone, Lu Bu installed telephones in important cities in Dahua in the next step.

If there is anything important in the future, you can contact you by phone.

There is no need to pass the message slowly through the post road as before.

Next, the phonograph began to be tested.

Lu Bu turned on the switch of the gramophone, then pressed the record button, and said: "The road is long, I will go up and down and seek!" ”

After recording the sound, Lu Bu pressed the play button, and soon, a voice came from the gramophone: "The road is long, I will go up and down and seek!" ”

The voice was a little distorted, but it could be heard at once, this was Lu Bu's voice.

This scene directly stunned Lu Sheng.

I couldn't help but stammer: "This, this is also amazing, right?" Father, what is this? ”

Lu Bu couldn't help but smile and said, "Well, it's called a gramophone." You can save the sound and play it back by pressing the play button. ”

After listening to Lu Bude's explanation, Lu Sheng couldn't help but say with a twinkle in his eyes: "Father, this is good, this is good!" ”

"Hey, hey, hey, hey! Father, can you give the gramophone and this walkie-talkie to your sons? ”

Lu Bu glanced at Lu Sheng, with a meaningful expression on his face.

This guy, who is so anxious to ask for a phonograph and a walkie-talkie, must want to please his little daughter-in-law.

This guy is a daughter-in-law fan!

Lu Sheng's personality is completely different from that of the eldest prince Lu Bin.

As his name suggests, Lu Bin is polite and has a calm personality.

As for Lu Sheng, he is active by nature and strong in martial arts.

But this guy has nothing to do in three days, and he always likes to drill into Zhang Fei's mansion to meet his little daughter-in-law.

If this matter is left in the house of those literati, even if you are a prince, they will never be allowed to meet before marriage.

This kind of thing is good to say when it spreads out.

Besides, if they can't hold on to it and come up with something to come up with, do you still want to lose face?

But Zhang Fei is not a literati, he is a military general, and he doesn't care about these at all.

Therefore, every time Lu Sheng went to the Changfu, Zhang Fei not only did not go out to pick up Lu Sheng, but also entertained him with delicious food and drink.

Zhang Fei likes this son-in-law very much, and treats Lu Sheng no different from his own son.

And Lu Bin is different, Lu Bin and Guan Yu's daughter are engaged, but except for the holidays, they have never come to the door.

Generally speaking, the common people like young children, and the royal family values the eldest son.

Ordinary people are the most beloved children.

And in the royal family, the most important thing is the eldest son.

But here in Lu Bu, the favorite is the second son Lu Sheng.

Because among Lu Bu's sons, Lu Bu felt that Lu Sheng was the most similar to him.

Therefore, in the face of Lu Sheng's request, Lu Bu didn't think much about it, and happily agreed.

Seeing that his father really agreed to his request, Lu Sheng was overjoyed, and after thanking him happily, he picked up a gramophone and a pair of walkie-talkies, and left happily.

……

After Lu Sheng left, Huang Chengyan couldn't help but say to Lu Bu: "Your Majesty, the camera is almost successfully developed." However, this TV set, I'm afraid it will be difficult to develop for a while. ”

Television? There are a lot of electronic components that need to be used in it, and with current technology, I am afraid it is not easy to develop.

Lu Bu couldn't help but nod and said, "In that case, let's put the TV on first." ”

"Now, you're starting to develop rifles, artillery, demining vehicles, and tanks."

Let's talk about it, Lu Bu explained the current situation of Dahua and Cao Wei to Huang Chengyan in detail.

After listening, Huang Chengyan's face couldn't help but show a thoughtful look.

At this stage, Dahua's most important research is still on artillery and demining vehicles.

As long as he has these two new weapons, he can easily crush Cao Wei.

With demining vehicles, they are no longer afraid of Cao Wei's mines.

There are cannons that can easily blast open their gates.

As for rifles and tanks, on the contrary, they are still secondary.

Because even without these two new weapons, as long as there are demining vehicles and cannons, Cao Wei can be easily crushed.

But if you want to conquer the world, you have to use rifles and tanks.

After understanding the situation, Huang Chengyan took the research drawings from Lu Bu's hand and left in a hurry.

……

After finishing his business, Lu Bu walked into the harem to find Queen Cai Yan.

After staying in Yuzhou for several months, Lu Bu missed Queen Cai Yan very much.

After arriving at Qianning Palace, I saw Queen Cai Yan leaning against the door and looking.

After seeing Lu Bu, he couldn't help but salute: "The concubine has seen the emperor!" ”

Lu Bu took a step forward, helped Cai Yan up, and stared intently.

Yan'er seemed to have lost some weight again.

Lu Bu felt a pain in his heart, and couldn't help but emotionally hold Cai Yan tightly in his arms.

Cai Yan couldn't help blushing, gently patted Lu Bu's chest, and said coquettishly: "Your Majesty, this is still at the door, why don't you let it go?" Let those palace maids and fathers-in-law look at it, what has it become? ”

Lu Bu smiled and said, "I hug my own lady, I think who dares to chew the root of the tongue?" ”

(End of chapter)