Tang En released the array pattern table, picked up the magic materials and started processing. He had the experience of helping Nadia make a sound device last time. The speaker should not be too simple. The only problem is to associate the signal array with the speaker, but this time

It’s not difficult for Tang En either.

It only took less than 2 hours, and based on those principles, Tang En made two palm-sized, somewhat ugly magic horns.

Tang En was busy just now, and Vera was no longer on the third floor. Tang En got up and sensed it, and found that Vera's voice sounded in the front yard, so he walked to the window and saw that Vera was following Elodie and the two of them.

He was training with the puppet Nadia who was walking slightly unsteadily.

"Vera~, come up quickly, we are going to prepare for the test~"

"Oh, here we come~" After hearing Tang En's call, Vera quickly flew up.

"Is that all? It's so big, can it make a sound?" Vera looked at the gadget in Tang En's hand with some confusion.

Tang En grinned: "Hey, the speaker and microphone are integrated, will it work? You will know if you try it~"

"What is a speaker or a microphone?" Vera looked confused.

"Hey, we'll find out later~" With a mysterious smile at Vera, Tang En installed the magic horn into the original position of the bell-type magic sound generator.

"Vera, stay tuned here. I'll go to the airship and try again." Tang En kicked off the man and flew out of the window.

"Oh~" Vera nodded, and then came over to carefully observe the pattern structure of the magic trumpet. Although her interest in pattern science was far less than that of alchemy, children were always full of curiosity about novel items.

While Vera was tilting her head to observe and whispering to herself, the magic trumpet suddenly sounded: "Hey, Vera, what are you mumbling about? Can you hear my voice?"

"Clam?"

The sudden sound startled Vera. She took a step back and looked at the speaker in surprise: "Twain? I can hear your voice, but the speaker has a slight hissing sound."

As soon as Vera finished her words, Tang En's voice sounded from the loudspeaker again: "Very good, this means we succeeded. Ignore the 'buzz' sound, it is interference."

"Is this the beginning of the telecommunications era in the wizarding world?" Tang En couldn't hide his excitement, thinking of the telephones, radios, and even remote drone operations in his previous life.

After pausing for a while, Tang En continued to contact Vera: "I will now activate the airship to fly away from Maning Port. You keep talking to me, and we will test the range of this communication."

"Okay, but what should I say?" Vera was a little confused.

"Ah? You can just say something, or you can sing? I'm leaving now~" Tang En's voice changed slightly, and some subtle interference began to appear in the speakers.

"Singing?" Vera's eyes lit up.

"Twain, wait a minute, I asked Penny to sing, but I can't sing~"

Tang En was speechless: "Okay, it's up to you. If you feel bored, you can ask Elodie to guard you."

Later, Tang En drove the airship with all his strength and tested the communication range. More than 90 minutes after the airship flew out, the sound quality began to decline rapidly. After almost 2 hours, the sound in the magic speaker was completely covered by noise interference.

"Well, considering that the airship is in the air, it is less disturbed by magic power sources on the ground. However, the magic device on the airship does have real-time interference. The magic communication device can maintain relatively clear communication within 300 kilometers." Tang En was worried, and then began to return home.

.

Back at the City Lord's Mansion, Vera and Elodie were training Nadia downstairs. Helena, who occasionally came to play, was also there. Vera saw Tang En coming back and immediately came over to greet her.

"Twain, how far did we fly this time, and how far can our communication device maintain contact?"

"It's not bad, I can still maintain a relatively clear signal for about 300 kilometers~" Tang En said with a smile on his face. He was quite satisfied with this distance.

"Ah? That means there is no way to communicate with White Rock City and Port Mathieu." Vera was a little disappointed.

Tang En shook his head: "No, we can still contact each other. We just need to put a few signal repeaters between these places."

"Repeater?" Vera was a little confused.

"It's a magic weapon used to receive signals where the signal begins to weaken, and then send the signal out. It's not complicated." Tang En said casually.

"Oh~" Vera seemed to understand but not understand.

"Then how many repeaters do we need to put in to connect these places?"

"The signal transmission range of the repeater is also similar to that of our communicator. In other words, to connect to White Rock City, at least 2 signal repeaters must be arranged in the middle. If we want to connect to Port Mathieu, at least 3 relays must be arranged.

device."

"Well, we also have to consider the connection between the Daxue Mountain and the Davine Forest. It's really troublesome to do too much~" Tang En scratched his head and didn't want to move anymore.

"Oh, then do it quickly. I will complete the third ring in 10 days at most. Then I will go to Port Mathieu to find a teacher. I can also arrange the repeater on the way."

"Oh? Are you almost at level 3? How many Chinese characters are left to go? I'm almost there too, I still have about 20 Chinese characters to go~" Tang En looked at Vera with a smile.

The strength of the Dun En wizard has improved rapidly recently. As for the cat demon, Lanis donated soul power, and he was too lazy to open the door to collect it in the middle of the night, so he only recently completed 2 new demon texts.

"Huh? I still have more than 20 points to go, but you're so fast~"

"Haha, of course, you think I just sleep in every day? I only rest after finishing my work~" Tang En raised his chin slightly, feeling slightly proud.

"Just a little bit~" Vera stuck out her tongue at Tang En.

Tang En reached out to touch Vera's head and looked at Nadia, who was holding a kettle and imitating Elodie's movements to water the magic plants: "Vera, how are you training Nadia now? Feel it.

Still looking a bit grindy."

"Nadia?" Vera also turned and looked over.

"It's better today. Elodie discovered this morning that using mental power to send messages to Nadia will make it easier for her to understand what we mean. You see, Nadia also learned to water the magic plants today."

"However, Nadia can't speak yet. She can't even learn to pronounce words. She can only occasionally make unknown humming sounds~" Vera felt a little regretful.

"It's not bad. Don't worry about talking. Just learn to obey orders and do things first. After all, it was only created less than three days ago." Tang En comforted him, then turned around and prepared to go upstairs.

"Teach me slowly, I'll go up and make the drawings first~"

"Lord Tang En, please wait a moment~" Helena trotted to catch up.

Tang En stopped when he heard the sound and turned around: "What's the matter?"

"Huh? Are you pregnant?" Tang En's eyes flashed and he asked curiously.

"Ah, yes, it's just been a month." Helena was a little shy.

"Hoho~, this is a good thing, but from now on, don't trot when you walk, just walk slowly, you know?" Tang En warned with a smile.
Chapter completed!