Huang Yuan is responsible for making all kinds of new things, if even he can't use them, it must be Ying Feiyu's creation.

So Ying Zheng didn't want to think about it, and directly questioned Ying Feiyu.

"It's nothing, it's just an amplification device!"

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

It's no wonder that they are in a hurry and sweating profusely.

The time for the draw is almost up, and they haven't figured out how to use it yet!

This set of audio was just exchanged from the system by Ying Feiyu two hours ago, and was sent by someone, and at the same time, Huang Yuan and Ying Heng were called to debug and use it together!

Although the method of use was taught, but they were in contact for the first time, very unfamiliar, according to the method after plugging in the power just made the sound just now, scared them quickly disconnected the power, at the moment is comparing the study of the stroke!

"PA equipment?"

Ying Zheng looked sideways slightly, 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 held, no matter how loud the shouting is, the people behind will not be able to hear it!" But with a stereo and a microphone, it is different, and the sound can be amplified by tens or even a hundred times! Even if the people on the stage speak normally, the last person in line can hear it clearly! ”

"What?"

After hearing this, Ying Zheng was quite shocked.

He had never seen such an amazing machine!

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

"There are buttons on the stereo to control the volume! So, just now, it was Huang Yuan and others who were debugging ......! ”

Ying Feiyu smiled and walked towards the other side of the platform, "Father, wait a while, and the sons will go over there to help them!" ”

In order not to delay the lottery time, he can only go over to debug it in person, and after the lottery is over, let them take it back and slowly tinker!

"Oops! Brother Huang, you're finally here! How do you use this big black box? We had just turned on the power when we made a strange noise that startled us! ”

"Yes! We're also debugging according to the usage method, huh? What went wrong? ”

After seeing Ying Feiyu, Ying Heng and Huang Yuan looked like they had seen a savior, chasing him and asking.

"Let's come on!"

Ying Feiyu smiled and went over to fiddle with it herself.

He was just afraid that these two guys wouldn't understand, Ying Feiyu had tried his best to write down the usage method in detail, but he didn't expect it to be not!

It is estimated that the time is too short, if you give them some time to explore, you will definitely be able to figure it out!

"Good, good!"

The two hurriedly dodged out of the way and let Ying Feiyu debug.

Ying Feiyu walked up to the stereo, and after only a moment of tinkering, he picked up the microphone and said in a normal tone: "Good evening, everyone!" ”

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

"It's my husband! This is the voice of the husband! ”

After Zhang Xi heard it, he immediately distinguished.

"How loud did my husband's voice become? It's like shouting in our ears! ”

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

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

The people, like them, raised their heads and looked into the air!

Looking for the thunderous sound, where did it come from?

If it weren't for Huang Yuan's reminder just now, it is estimated that they would have thought that the gods were about to arrive at this time!

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

Huang Yuan and Ying Heng were also amazed.

"Where is this? I turned the volume up to 30%! If it is all full, I am afraid that the eardrums of the people near the speaker will be broken! ”

Ying Feiyu smiled slightly.

"Brother Huang, Brother Huang, what is the principle of this? Why can a small box make so much noise? ”

This can't help but arouse the curiosity of Ying Heng.

"It's not a small box, it's ...... Oops! The time for the lottery is coming, so I'll explain it to you later! ”

There were already guys who moved the fully transparent glass box used for the lottery to the stage, and Ying Feiyu noticed that the time for the lottery was almost over, so he swallowed back the words halfway through.

After handing over the microphone to the lottery manager, Ying Feiyu walked in the direction of Ying Zheng's side, waiting for the lottery!

The lottery method is almost the same as that of later generations, and a fully transparent glass box was specially built, which contained a small ball with numbers written on it, similar to the size of a ping pong ball.

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

When the people saw the glass box, their hearts were lifted.

Whether they spend two pennies for nothing, or get rich overnight, it depends on today!

"Good evening, everyone! Welcome everyone to watch the first lottery of Daqin, I uphold a fair and just attitude, under the supervision of everyone to draw the lottery, on the spot to announce the winning numbers, please everyone take your lottery tickets! All winners can redeem their ...... at any location and any lottery ticket sales point in Daqin within two months! ”

The steward held the microphone and calmly walked to the stage to give a detailed introduction to the people.

"It's amazing, what kind of immortal art can amplify the voices of the people on the stage so much?"

"I don't know? I thought I couldn't hear anything from the back, so I bought a telescope at a high price! Now it seems that it is not used at all! ”

"Yes! With such a loud voice, I'm afraid that Xianyang City can hear the winning numbers clearly, right......? ”

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

"Good! I won't lose any time for the big guy to win the lottery! Let's start the draw! ”

The steward dodged and made a gesture towards the glass box.

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

"Good! Our red balls have started to spin ha! ”

"When ......"

After a few moments, a red ball successfully jumped out of the round hole reserved for the glass case, making a crisp sound.

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

The steward picked up the red ball that jumped out, and after glancing at the numbers on it, he deliberately sold the guanzi and pulled the tail note to the elder, which made the people anxious.

Even the old ones are holding lottery tickets one by one and are nervous.

"It's just the first ball, a few Shangshu don't have to be so excited, right?"

Looking at their nervous appearances that they couldn't breathe, Ying Feiyu couldn't hold back and laughed jokingly.