Chapter 1161

"If I invent a tool where people talk at the entrance of the cave and can be heard underneath the cave, do you say?"

"Okay, of course that's good." Qi nodded, "This way we don't have to climb around from the ladder, which saves a lot of effort." ”

“Bingo！” Ye Qingxin snapped his fingers, "Correct solution!" ”

She found a piece of wood the thickness of her arm, and asked Kai to help her look at the two round pieces of wood.

Then use a small copper knife to hollow out the middle and make the shape of two cups.

A small hole was drilled in the bottom of the cup, and the copper wire was inserted into it, wrapped around a small piece of firewood, and the other end was concocted in the same way.

When she taught Ah Ge to make kudzu wire, she made a kudzu wire earthen phone to tease him, but she didn't expect to have copper wire now.

The conduction function of copper wire is much more powerful than that of Ge wire, and copper wire telephone will inevitably become the semi-automatic electrical appliance of the first genesis in this ancient era.

After making a copper wire and soil phone, Ye Qingxin could not hide the excitement in his heart.

She finally has the first ancient electrical equipment!

Pride!

In order to verify the effect, Kai went down to the deep cave with the other end of the copper wire phone.

According to Ye Qingxin's instructions, he put the wooden cup next to his ear and waited quietly for a sound to come from inside.

Ye Qingxin was at the entrance of the cave, straightened the copper wire, adjusted the distance, clasped the wooden cup to his lips, and shouted loudly, "Kai, did you hear me speak, please answer when you receive it, it's over!" ”

"Buzz ......"

There was a buzzing sound from the cup, and Kai frowned, and in an instant, his eyes widened.

“...... Speak...... Please answer if you receive it...... Bi ......"

Ye Qingxin's voice came from the cup, and in the midst of a buzzing sound, it was extremely clear.

It's really her voice!

Kai was so excited that he almost threw away the cup in his hand.

He looked up at the high roof of the cave in disbelief, so far away that even if he shouted at the top of his voice, the people above couldn't hear it.

But this little thing in his hand was able to gather the other party's voice and let him hear it.

It's incomprehensible and it's fun!

"Please answer, over!" During the time of enlightenment, there was another buzzing sound in the cup, accompanied by Ye Qingxin's urging.

Kai quickly clasped the cup to his mouth and shouted, "I heard your voice, Xin! I heard ......"

At the entrance of the cave, Ye Qingxin heard Qi's voice in the cup, and couldn't help laughing, and hurriedly put the cup on his mouth and shouted, "You're going to finish speaking, it's over." ”

Soon, Kai's voice came from the cup, "Heart, I like you so much, it's over." ”

Ye Qingxin held a wooden cup on his ear, covered his mouth and giggled.

She hurriedly sent a message to Qi, "I like you too, it's over." ”

"Goddess, do you really hear a voice?" Ah Du watched from the sidelines, scratching his ears and cheeks in a hurry, "Let me play, let me play!" ”

"I'm going to play too, goddess!"

"And I'm still ......"

Everyone couldn't resist the excitement and chattered around Ye Qingxin to play this novel "phone".