Huang Yuan is responsible for making all kinds of fresh things. If he doesn't even know how to use them, it must be made by Ying Feiyu.

So Ying Zheng asked Ying Feiyu directly without thinking.

"Nothing, just a sound amplification device!"

Ying Feiyu looked at Huang Yuan, Ying Heng and others who were fiddling with the sound on the other side of the podium, and couldn't help laughing.

No wonder they were in a hurry and sweating profusely.

The time for the lottery is coming soon, and they haven't figured out how to use this thing yet!

This set of speakers was just redeemed from the system two hours ago and ordered someone to send them. At the same time, Huang Yuan and Ying Heng were asked to debug and use together!

Although they had taught how to use it, it was their first time to get in touch with it. They were very unfamiliar with it. After plugging in the power, they made the sound just now. They were so scared that they quickly disconnected the power supply and were studying it in a striking manner!

“Amplifier device?”

Ying Zheng looked slightly sideways and asked suspiciously.

“That’s right…!”

Ying Feiyu nodded with a smile and continued, "There are so many people in the audience. When the lottery is drawn later, no matter how loud the people behind him can't hear it! But with the speaker and the microphone, it's different. The sound can be amplified by dozens or even a hundred times! Even if the people on the stage speak normally, the person in the last can hear it clearly!"

"What?"

Ying Zheng was quite shocked after hearing this.

He has never seen such a magical machine!

Wang Wan and others also blinked, staring at Ying Feiyu, their faces full of curiosity!

"There are buttons on the speaker that can control the volume! So, just now, Huang Yuan and others were debugging..."

Ying Feiyu smiled and walked towards the other side of the platform, "Father, wait a moment, my son and I will go there to help them!"

In order not to delay the lottery draw time, he could only go over and debug it himself, and after the lottery draw was over, he would let them take it back and tinker slowly!

"Oh! Brother Emperor, you are finally here! How to use this big black box? We just turned on the power and made an abnormal noise, which scared us!"

"Yes! We also debugged according to the usage method? What went wrong?"

After seeing Ying Feiyu, Ying Heng and Huang Yuan looked like they saw a savior and chased him for asking.

"I'll do it!"

Ying Feiyu smiled and went over to fiddle with her.

He was afraid that these two guys would not understand, so Ying Feiyu had tried to write the usage method as much as possible, but he didn't expect that he still didn't!

It is probably because the time is too short. If they are given some time to explore, they will definitely be able to understand!

"well!"

The two of them quickly made way aside and asked Ying Feiyu to debug.

Ying Feiyu walked to the audio, fiddled for just a moment, then picked up the microphone, and said in a normal tone: "Good evening everyone!"

However, the sound was amplified dozens of times through the speaker, surrounding everyone's ears like thunder!

"It's husband! This is the husband's voice!"

After Zhang Xi heard this, he immediately identified it.

"My husband's voice has become so loud? It seems like he is shouting in our ears!"

"I feel like I'm floating in the air!"

Wang Wan and Yu Ji also spoke one after another and looked into the air.

The people were almost the same as them, and they all looked up and looked into the air!

Looking for the sound like thunder, where did it come from?

If Huang Yuan hadn't given a reminder just now, they probably thought that the god was coming!

"Your Majesty, can this black box actually amplify the sound so much?"

Huang Yuan and Ying Heng were also amazed.

"This is where I went? I have only turned the volume to 30%! If I pull it all over, I may be shaking the eardrums of the people near the speaker!"

Ying Feiyu smiled a little proudly.

"Brother, brother, what is the principle of this? Why can a small box make the sound so loud?"

This aroused Ying Heng's curiosity.

"This is not a small box, this...oh! The time for the lottery is coming, I will explain it to you later!"

Someone had already moved the fully transparent glass box for the lottery draw to the table. Ying Feiyu noticed that the lottery draw time was almost over, so he swallowed half of the words back.

After handing the microphone to the lottery manager, Ying Feiyu walked towards Ying Zheng and waited for the lottery draw!

The lottery draw method is almost the same as that of later generations. A fully transparent glass box was specially created, which contained a small ball with a number written on it, which was the same size as a table tennis ball.

There is a round hole in the glass box. When the wind blows into the glass box, the ball inside will start to fly. Which one jumps out of the hole first, which number is the winning number!

When the people saw the glass box, their hearts also raised.

Whether they spend two cents in vain or get rich overnight depends on today!

"Good evening everyone! Welcome everyone to watch the first lottery draw of Daqin. I adhere to a fair and fair attitude, draw the lottery under everyone's supervision, and announce the winning numbers on the spot. Please everyone get your lottery tickets! All winners can go to any location and any lottery sales point in Daqin within two months...!"

The manager walked to the stage calmly with a microphone in his hand and introduced it in detail to the people.

"It's so amazing. What kind of magic is it that can amplify the voices of the people on the stage so much?"

"I don't know? I thought I could not hear anything when I stood behind, so I specially bought a telescope for a high price! Now it seems that I can't use it at all!"

"Yes! With such a loud voice, Xianyang City is afraid that even the winning numbers can be heard clearly..."

When the people listened to the steward's statement, the focus of the discussion was not on the lottery, but were curious about what kind of equipment was that could amplify the sound so much, as if it was above their heads.

"Okay! I won't waste everyone's precious time winning the prize! Let's start the lottery now!"

The manager flashed and made a call to the glass box.

Then, the ball inside began to fly continuously under the influence of wind.

"Okay! Our red ball has started to rotate!"

"when……"

After a moment, a red ball successfully jumped out of the round hole reserved in the glass box, making a crisp sound.

"Haha! Our first ball has come out, the number on it is..."

The manager picked up the red ball that jumped out, looked at the numbers on it, and deliberately kept it in the way, making the old man who pulled the tail note, which made the people very anxious.

Even the old guys held the lottery tickets in their hands and became nervous.

"This is just the first ball. Don't you be so excited, are you?"
Chapter completed!